Energy science and technology

  • Article | | open

    Sodium ion batteries are known to benefit from the use of ether electrolytes. Here the authors reveal the origin showing that the energy barrier of charge transfer at the electrolyte/electrode interface dominates the interfacial electrochemical characteristics and is favorably small.

    • Kaikai Li
    • , Jun Zhang
    • , Dongmei Lin
    • , Da-Wei Wang
    • , Baohua Li
    • , Wei Lv
    • , Sheng Sun
    • , Yan-Bing He
    • , Feiyu Kang
    • , Quan-Hong Yang
    • , Limin Zhou
    •  & Tong-Yi Zhang
  • Article | | open

    Exsolution is attractive for the preparation of catalytically active metal nanoparticles, but versatility is limited. Here the authors report a technique for selective exsolution through topotactic ion exchange, leading to an electrocatalyst for a solid oxide fuel cell with enhanced performance.

    • Sangwook Joo
    • , Ohhun Kwon
    • , Kyeounghak Kim
    • , Seona Kim
    • , Hyunmin Kim
    • , Jeeyoung Shin
    • , Hu Young Jeong
    • , Sivaprakash Sengodan
    • , Jeong Woo Han
    •  & Guntae Kim
  • Article | | open

    The bandgap of mixed-halide perovskites can be continuously tuned by changing the halide ratio, but the crystals have poor photo-stability. Here the authors show that photoinduced phase separation is suppressed when perovskite nanocrystals are embedded in a non-perovskite endotaxial matrix.

    • Xi Wang
    • , Yichuan Ling
    • , Xiujun Lian
    • , Yan Xin
    • , Kamal B. Dhungana
    • , Fernando Perez-Orive
    • , Javon Knox
    • , Zhizhong Chen
    • , Yan Zhou
    • , Drake Beery
    • , Kenneth Hanson
    • , Jian Shi
    • , Shangchao Lin
    •  & Hanwei Gao
  • Article | | open

    Despite remarkable optical properties in lead halide perovskites, spin control in these materials is largely unexplored. Herein Belykh et al. study the coherent spin dynamics of electrons and holes in cesium lead bromide perovskites, and evidence interaction of electron and lattice nuclear spins.

    • Vasilii V. Belykh
    • , Dmitri R. Yakovlev
    • , Mikhail M. Glazov
    • , Philipp S. Grigoryev
    • , Mujtaba Hussain
    • , Janina Rautert
    • , Dmitry N. Dirin
    • , Maksym V. Kovalenko
    •  & Manfred Bayer
  • Article | | open

    Li-O2 batteries are promising candidates for the next generation of rechargeable batteries, but the side reactions and poor cycling stability limit their applications. Here, the authors show a versatile ionic liquid with functional groups that can address both issues for cells operated in oxygen and air.

    • Jinqiang Zhang
    • , Bing Sun
    • , Yufei Zhao
    • , Anastasia Tkacheva
    • , Zhenjie Liu
    • , Kang Yan
    • , Xin Guo
    • , Andrew M. McDonagh
    • , Devaraj Shanmukaraj
    • , Chengyin Wang
    • , Teofilo Rojo
    • , Michel Armand
    • , Zhangquan Peng
    •  & Guoxiu Wang
  • Article | | open

    Understanding the fundamental chemistry in Li-O2 battery holds importance to the development of superior energy devices. Here the authors report that the oxygen reduction reaction in Li-O2 battery exhibits negative differential resistance, which can work as an indicator to the reaction pathway.

    • Yoko Hase
    • , Yasuhiro Komori
    • , Takayoshi Kusumoto
    • , Takashi Harada
    • , Juntaro Seki
    • , Tohru Shiga
    • , Kazuhide Kamiya
    •  & Shuji Nakanishi
  • Article | | open

    The average crystal structure largely governs the Li diffusion kinetics in well-ordered cathode materials. Here the authors show this rule does not hold true for cation-disordered analogues. Cation short-range order is not only ubiquitous but also controls the Li transport behavior.

    • Huiwen Ji
    • , Alexander Urban
    • , Daniil A. Kitchaev
    • , Deok-Hwang Kwon
    • , Nongnuch Artrith
    • , Colin Ophus
    • , Wenxuan Huang
    • , Zijian Cai
    • , Tan Shi
    • , Jae Chul Kim
    • , Haegyeom Kim
    •  & Gerbrand Ceder
  • Article | | open

    End-product toxicity, culture contamination, and energy efficient product recovery are long-standing issues in bioprocessing. Here, the authors address these problems using a fermentation strategy that combines microbial production of branched alcohols with supercritical carbon dioxide extraction.

    • Jason T. Boock
    • , Adam J. E. Freedman
    • , Geoffrey A. Tompsett
    • , Sarah K. Muse
    • , Audrey J. Allen
    • , Luke A. Jackson
    • , Bernardo Castro-Dominguez
    • , Michael T. Timko
    • , Kristala L. J. Prather
    •  & Janelle R. Thompson
  • Article | | open

    Healable and stretchable energy storage devices are gaining interest for wearable electronics and smart textiles. Here the authors report a nanocomposite hydrogel with high stretchability, ionic conductivity, and healing capability for use in a supercapacitor that can stretch 900% after healing.

    • Huili Li
    • , Tian Lv
    • , Huanhuan Sun
    • , Guiju Qian
    • , Ning Li
    • , Yao Yao
    •  & Tao Chen
  • Article | | open

    Non-fullerene organic molecule acceptors have been the hot research subject to drive the efficiency of the organic solar cells higher, but their synthetic costs are high. Here Li et al. design a simplified synthetic route for the state-of-the-art acceptors and bring down their cost by more than 15%.

    • Xiaojun Li
    • , Fei Pan
    • , Chenkai Sun
    • , Ming Zhang
    • , Zhiwei Wang
    • , Jiaqi Du
    • , Jing Wang
    • , Min Xiao
    • , Lingwei Xue
    • , Zhi-Guo Zhang
    • , Chunfeng Zhang
    • , Feng Liu
    •  & Yongfang Li
  • Article | | open

    Defective grain boundaries of polycrystalline perovskite films are one of the major causes of the instability of the solar cell devices. Here Han et al. choose a polymer with proper molecular structure to crosslink the perovskite grains to greatly improve the device stability.

    • Tae-Hee Han
    • , Jin-Wook Lee
    • , Chungseok Choi
    • , Shaun Tan
    • , Changsoo Lee
    • , Yepin Zhao
    • , Zhenghong Dai
    • , Nicholas De Marco
    • , Sung-Joon Lee
    • , Sang-Hoon Bae
    • , Yonghai Yuan
    • , Hyuck Mo Lee
    • , Yu Huang
    •  & Yang Yang
  • Article | | open

    Chinese government has implemented regulations to reduce mining-related methane emission since 2010. Here the authors estimated methane emissions in China using GOSAT satellite observation and results reveal a business-as-usual increase in methane emissions since 2010 despite those ambitious targets.

    • Scot M. Miller
    • , Anna M. Michalak
    • , Robert G. Detmers
    • , Otto P. Hasekamp
    • , Lori M. P. Bruhwiler
    •  & Stefan Schwietzke
  • Article | | open

    The weak effects induced by lattice disorder on the optoelectronic properties of halide perovskites still remain elusive. Here Wu et al. confirm the indirect transition tail states in perovskite crystals which explain their low photoluminescence quantum yield, dual emission peaks and difficulties in realizing lasing.

    • Bo Wu
    • , Haifeng Yuan
    • , Qiang Xu
    • , Julian A. Steele
    • , David Giovanni
    • , Pascal Puech
    • , Jianhui Fu
    • , Yan Fong Ng
    • , Nur Fadilah Jamaludin
    • , Ankur Solanki
    • , Subodh Mhaisalkar
    • , Nripan Mathews
    • , Maarten B. J. Roeffaers
    • , Michael Grätzel
    • , Johan Hofkens
    •  & Tze Chien Sum
  • Article | | open

    Here the authors show a pore-coordinated rational design to enable a Si hybrid anode that exhibits minimized electrode swelling comparable to conventional graphite and therefore high volumetric capacity and energy density.

    • Jiyoung Ma
    • , Jaekyung Sung
    • , Jaehyung Hong
    • , Sujong Chae
    • , Namhyung Kim
    • , Seong-Hyeon Choi
    • , Gyutae Nam
    • , Yoonkook Son
    • , Sung Youb Kim
    • , Minseong Ko
    •  & Jaephil Cho
  • Article | | open

    Organic–inorganic metal halide perovskite solar cells have been under the spotlight but what happens in the working solar cell device at the nanoscale remains elusive. Here Kim et al. show that light and voltage bias can induce strain and structural variation which may cause JV scan hysteresis.

    • Dohyung Kim
    • , Jae Sung Yun
    • , Pankaj Sharma
    • , Da Seul Lee
    • , Jincheol Kim
    • , Arman M. Soufiani
    • , Shujuan Huang
    • , Martin A. Green
    • , Anita W. Y. Ho-Baillie
    •  & Jan Seidel
  • Article | | open

    While the conversion of greenhouse CO2 to chemical fuels offers a promising renewable energy technology, there is a dire need for new materials. Here, authors report the largest CO2 photocathode search using a first-principles approach to identify both known and unreported candidate photocatalysts.

    • Arunima K. Singh
    • , Joseph H. Montoya
    • , John M. Gregoire
    •  & Kristin A. Persson
  • Article | | open

    The development of electrically conductive fibres is attractive for wearable electronics, but performance should be maintained upon deformation and tensile strain. Here the authors fabricate flexible, stretchable, carbon nanotube-coated spandex fibres for supercapacitors and artificial muscles.

    • Wonkyeong Son
    • , Sungwoo Chun
    • , Jae Myeong Lee
    • , Yourack Lee
    • , Jeongmin Park
    • , Dongseok Suh
    • , Duck Weon Lee
    • , Hachul Jung
    • , Young-Jin Kim
    • , Younghoon Kim
    • , Soon Moon Jeong
    • , Sang Kyoo Lim
    •  & Changsoon Choi
  • Article | | open

    Fuel cells are promising for converting fuel into electricity, but rely on development of high-performance catalysts for oxygen reduction. Here the authors report a highly durable platinum-trimer decorated cobalt-palladium catalyst with low platinum loading for electrocatalysis of oxygen reduction.

    • Sheng Dai
    • , Jyh-Pin Chou
    • , Kuan-Wen Wang
    • , Yang-Yang Hsu
    • , Alice Hu
    • , Xiaoqing Pan
    •  & Tsan-Yao Chen
  • Article | | open

    All-polymer solar cells have shown high efficiencies but the ultrafast charge transfer processes are less known. Here Wang et al. show that polaron pairs play vital role facilitating the hole transfer, which is quite different from the exciton dominated pathway in polymer-fullerene blends.

    • Rui Wang
    • , Yao Yao
    • , Chunfeng Zhang
    • , Yindong Zhang
    • , Haijun Bin
    • , Lingwei Xue
    • , Zhi-Guo Zhang
    • , Xiaoyu Xie
    • , Haibo Ma
    • , Xiaoyong Wang
    • , Yongfang Li
    •  & Min Xiao
  • Article | | open

    While earth-abundant materials are promising catalysts for renewable energy conversion, such materials tend to display poor activities. Here, authors show FeS troilite nanosheets to undergo a near-infrared light-triggered transition to a phase that displays improved H2 evolution performances.

    • Gang Zhou
    • , Yun Shan
    • , Longlu Wang
    • , Youyou Hu
    • , Junhong Guo
    • , Fangren Hu
    • , Jiancang Shen
    • , Yu Gu
    • , Jingteng Cui
    • , Lizhe Liu
    •  & Xinglong Wu
  • Article | | open

    The interactions of lignin with polysaccharides in plant secondary cell walls are not well understood. Here the authors employ solid-state NMR measurements to analyse intact stems of maize, Arabidopsis, switchgrass and rice and observe that lignin self-aggregates and forms highly hydrophobic microdomains that make extensive surface contacts to xylan.

    • Xue Kang
    • , Alex Kirui
    • , Malitha C. Dickwella Widanage
    • , Frederic Mentink-Vigier
    • , Daniel J. Cosgrove
    •  & Tuo Wang
  • Article | | open

    The discovery of thermodynamically stable thermoelectric materials for power generation has relied on empirical methods that were not effective. Here, the authors apply the inverse design approach to identify and experimentally realize TaFeSb-based half Heuslers with high thermoelectric performance.

    • Hangtian Zhu
    • , Jun Mao
    • , Yuwei Li
    • , Jifeng Sun
    • , Yumei Wang
    • , Qing Zhu
    • , Guannan Li
    • , Qichen Song
    • , Jiawei Zhou
    • , Yuhao Fu
    • , Ran He
    • , Tian Tong
    • , Zihang Liu
    • , Wuyang Ren
    • , Li You
    • , Zhiming Wang
    • , Jun Luo
    • , Andrei Sotnikov
    • , Jiming Bao
    • , Kornelius Nielsch
    • , Gang Chen
    • , David J. Singh
    •  & Zhifeng Ren
  • Article | | open

    The mechanism of lithium storage in graphenic carbon remains a fundamental question to be addressed. Here the authors employ suitable bilayer graphene foam to investigate various physiochemical phenomena of lithium intercalation and propose a storage model.

    • Kemeng Ji
    • , Jiuhui Han
    • , Akihiko Hirata
    • , Takeshi Fujita
    • , Yuhao Shen
    • , Shoucong Ning
    • , Pan Liu
    • , Hamzeh Kashani
    • , Yuan Tian
    • , Yoshikazu Ito
    • , Jun-ichi Fujita
    •  & Yutaka Oyama
  • Article | | open

    The development of new electrolyte systems is needed to optimize performance in lithium-sulfur batteries. Here the authors employ anions with high donor numbers in electrolytes to prevent passivation of the cathode surface, thereby improving sulfur utilization and energy density in a lithium-sulfur cell.

    • Hyunwon Chu
    • , Hyungjun Noh
    • , Yun-Jung Kim
    • , Seongmin Yuk
    • , Ju-Hyuk Lee
    • , Jinhong Lee
    • , Hobeom Kwack
    • , YunKyoung Kim
    • , Doo-Kyung Yang
    •  & Hee-Tak Kim
  • Article | | open

    The conversion of natural gas to chemicals and fuels via the Fischer-Tropsch synthesis process, depends on the ability of catalyst materials to suppress the formation of methane and carbon dioxide. Here, the authors develop a Co1Mn3-Na2S catalyst, which has a hydrocarbon product spectrum deviating from the Anderson–Schulz–Flory distribution.

    • Jingxiu Xie
    • , Pasi P. Paalanen
    • , Tom W. van Deelen
    • , Bert M. Weckhuysen
    • , Manuel J. Louwerse
    •  & Krijn P. de Jong
  • Article | | open

    Water may serve as a renewable hydrogen fuel source to replace fossil fuels, although such electrolysis requires highly active catalysts. Here, authors explore Ruddlesden−Popper oxides as hydrogen evolution electrocatalysts that feature an unusual synergistic effect to promote high activity.

    • Yinlong Zhu
    • , Hassan A. Tahini
    • , Zhiwei Hu
    • , Jie Dai
    • , Yubo Chen
    • , Hainan Sun
    • , Wei Zhou
    • , Meilin Liu
    • , Sean C. Smith
    • , Huanting Wang
    •  & Zongping Shao
  • Article | | open

    Antimony selenide is a promising thin film solar cell absorber material in which grain orientation is crucial for high device performance. Here Li et al. grow the material in nanorod arrays along the [001] direction and obtain record high efficiency of 9.2%.

    • Zhiqiang Li
    • , Xiaoyang Liang
    • , Gang Li
    • , Haixu Liu
    • , Huiyu Zhang
    • , Jianxin Guo
    • , Jingwei Chen
    • , Kai Shen
    • , Xingyuan San
    • , Wei Yu
    • , Ruud E. I. Schropp
    •  & Yaohua Mai
  • Article | | open

    Reducing particle size of electrode materials to nanoscale dimensions is believed responsible for their enhanced reaction kinetics and electrochemical performance. Here, the authors use in situ transmission electron microscopy to study the dynamic process of the spinel zinc ferrite nanoparticles as a function of size, finding that the intercalation reaction pathway changes below a critical particle size.

    • Jing Li
    • , Qingping Meng
    • , Yiman Zhang
    • , Lele Peng
    • , Guihua Yu
    • , Amy C. Marschilok
    • , Lijun Wu
    • , Dong Su
    • , Kenneth J. Takeuchi
    • , Esther S. Takeuchi
    • , Yimei Zhu
    •  & Eric A. Stach
  • Article | | open

    Recent research efforts have aimed at discovering thermoelectric materials with high efficiency in the middle-low temperature range, where a majority of waste heat is lost to the ambient. Here, the authors discover colossal Seebeck coefficient values in metallic copper selenide from 340 K to 400 K.

    • Dogyun Byeon
    • , Robert Sobota
    • , Kévin Delime-Codrin
    • , Seongho Choi
    • , Keisuke Hirata
    • , Masahiro Adachi
    • , Makoto Kiyama
    • , Takashi Matsuura
    • , Yoshiyuki Yamamoto
    • , Masaharu Matsunami
    •  & Tsunehiro Takeuchi
  • Article | | open

    Biological light-driven ion pumps move ions against a concentration gradient to create a membrane potential, converting sunlight into an osmotic potential. Here, the authors make an artificial ion pump which drives ions thermodynamically uphill against a large concentration gradient upon illumination, which can be used for harvesting solar energy.

    • Kai Xiao
    • , Lu Chen
    • , Ruotian Chen
    • , Tobias Heil
    • , Saul Daniel Cruz Lemus
    • , Fengtao Fan
    • , Liping Wen
    • , Lei Jiang
    •  & Markus Antonietti
  • Article | | open

    Mn-based layered oxides are promising cathode materials for next generation sodium ion batteries. To address two existing issues facing the system, here the authors show that a simple zinc doping can suppress both Jahn–Teller distortion and phase separation, enabling enhanced cycling performance.

    • Kai Zhang
    • , Duho Kim
    • , Zhe Hu
    • , Mihui Park
    • , Gahee Noh
    • , Yujeong Yang
    • , Jing Zhang
    • , Vincent Wing-hei Lau
    • , Shu-Lei Chou
    • , Maenghyo Cho
    • , Si-Young Choi
    •  & Yong-Mook Kang
  • Article | | open

    Singlet exciton fission – the separation of photoexcited singlet states into two triplet states – holds promise for enhancing photocurrents in photovoltaic technologies. Krishnapriya et al. characterize how electron delocalization over the bridges in a series of pentacene dimers controls this process.

    • K. C. Krishnapriya
    • , Palas Roy
    • , Boregowda Puttaraju
    • , Ulrike Salzner
    • , Andrew J. Musser
    • , Manish Jain
    • , Jyotishman Dasgupta
    •  & Satish Patil
  • Article | | open

    Replacing the toxic lead in the state-of-the-art halide perovskite solar cells is highly desired but the device performance and stability are usually compromised. Here Chen et al. develop inorganic cesium tin and germanium mixed-cation perovskites that show high operational stability and efficiency over 7%.

    • Min Chen
    • , Ming-Gang Ju
    • , Hector F. Garces
    • , Alexander D. Carl
    • , Luis K. Ono
    • , Zafer Hawash
    • , Yi Zhang
    • , Tianyi Shen
    • , Yabing Qi
    • , Ronald L. Grimm
    • , Domenico Pacifici
    • , Xiao Cheng Zeng
    • , Yuanyuan Zhou
    •  & Nitin P. Padture
  • Article | | open

    Development of fuel cells and metal-air batteries is hindered by electrocatalyst performance, which can be enhanced with uniform and atomically dispersed active sites. Here the authors report an iron-based electrocatalyst for oxygen reduction in cathodes for a zinc-air battery and a hydrogen-air fuel cell.

    • Yuanjun Chen
    • , Shufang Ji
    • , Shu Zhao
    • , Wenxing Chen
    • , Juncai Dong
    • , Weng-Chon Cheong
    • , Rongan Shen
    • , Xiaodong Wen
    • , Lirong Zheng
    • , Alexandre I. Rykov
    • , Shichang Cai
    • , Haolin Tang
    • , Zhongbin Zhuang
    • , Chen Chen
    • , Qing Peng
    • , Dingsheng Wang
    •  & Yadong Li
  • Article | | open

    Developing new technologies for the neuromodulation of the vagus nerve can enable therapeutic strategies for body weight control in obese patients. Here, the authors present a battery-free self-powered implantable vagus nerve stimulation system that electrically responds to stomach movement.

    • Guang Yao
    • , Lei Kang
    • , Jun Li
    • , Yin Long
    • , Hao Wei
    • , Carolina A. Ferreira
    • , Justin J. Jeffery
    • , Yuan Lin
    • , Weibo Cai
    •  & Xudong Wang
  • Article | | open

    Water-based semiconducting polymer nanoparticles are eco-friendly and non-toxic but their performance suffers from the surfactants. Here Xie et al. design an approach to minimize the amount of residual surfactant in these nanoparticles and make high-efficiency and stability solar cells.

    • Chen Xie
    • , Thomas Heumüller
    • , Wolfgang Gruber
    • , Xiaofeng Tang
    • , Andrej Classen
    • , Isabel Schuldes
    • , Matthew Bidwell
    • , Andreas Späth
    • , Rainer H. Fink
    • , Tobias Unruh
    • , Iain McCulloch
    • , Ning Li
    •  & Christoph J. Brabec
  • Article | | open

    To realize the potential of soft hybrid (inorganic-organic) materials for thermoelectrics, the underlying transport-related physics must be understood. Here, the authors extend the Kang-Synder framework with experimental analysis to gain insight on the thermoelectric transport in hybrid materials.

    • Pawan Kumar
    • , Edmond W. Zaia
    • , Erol Yildirim
    • , D. V. Maheswar Repaka
    • , Shuo-Wang Yang
    • , Jeffrey J. Urban
    •  & Kedar Hippalgaonkar
  • Article | | open

    The need for cheap water-splitting materials in order to scale-up and commercialize solar-to-fuel technologies is urgent, but there are still few candidate materials. Here, authors integrate layered double hydroxides with graphdiyne as high-performance overall water-splitting electrocatalysts.

    • Lan Hui
    • , Yurui Xue
    • , Bolong Huang
    • , Huidi Yu
    • , Chao Zhang
    • , Danyan Zhang
    • , Dianzeng Jia
    • , Yingjie Zhao
    • , Yongjun Li
    • , Huibiao Liu
    •  & Yuliang Li
  • Article | | open

    The flammability and toxicity of the currently used electrolytes are the concerns that must be addressed. Here the authors show a non-fluorinated and non-toxic ionomeric aqueous gel electrolyte called water-in-ionomer that allows an enlargement of electrochemical stability window and design of environmentally friendly battery cell chemistries.

    • Xin He
    • , Bo Yan
    • , Xin Zhang
    • , Zigeng Liu
    • , Dominic Bresser
    • , Jun Wang
    • , Rui Wang
    • , Xia Cao
    • , Yixi Su
    • , Hao Jia
    • , Clare P. Grey
    • , Henrich Frielinghaus
    • , Donald G. Truhlar
    • , Martin Winter
    • , Jie Li
    •  & Elie Paillard
  • Article | | open

    Electrochemical ion intercalation in 2D layered materials is known to occur through the material’s edges, accompanied by frequent structural deformations. Here the authors show that in MoS2 flakes where the edges have been sealed, a reversible and ion-selective intercalation occurs through the top surface via the intrinsic defects.

    • Jinsong Zhang
    • , Ankun Yang
    • , Xi Wu
    • , Jorik van de Groep
    • , Peizhe Tang
    • , Shaorui Li
    • , Bofei Liu
    • , Feifei Shi
    • , Jiayu Wan
    • , Qitong Li
    • , Yongming Sun
    • , Zhiyi Lu
    • , Xueli Zheng
    • , Guangmin Zhou
    • , Chun-Lan Wu
    • , Shou-Cheng Zhang
    • , Mark L. Brongersma
    • , Jia Li
    •  & Yi Cui
  • Article | | open

    Solar steam generation is limited by fouling of solar converters, and the steam temperature is usually pinned to 100 °C. Here, both limitations are overcome in a system utilizing a solar absorber and light down-converter to achieve radiative heating, which does not require physical contact between absorber and water.

    • Thomas A. Cooper
    • , Seyed H. Zandavi
    • , George W. Ni
    • , Yoichiro Tsurimaki
    • , Yi Huang
    • , Svetlana V. Boriskina
    •  & Gang Chen
  • Article | | open

    Achieving high thermopower in liquid-state thermogalvanic cells is vital to realize a low-cost technology solution for thermal-to-electrical energy conversion. Here, the authors present aqueous thermogalvanic cells based on modified electrolyte with enhanced Seebeck coefficient and thermopower.

    • Jiangjiang Duan
    • , Guang Feng
    • , Boyang Yu
    • , Jia Li
    • , Ming Chen
    • , Peihua Yang
    • , Jiamao Feng
    • , Kang Liu
    •  & Jun Zhou
  • Article | | open

    Ionic liquid electrolytes can impart increased operational voltage and energy density in supercapacitors, but water may diminish performance. Here the authors show that the hydrophilicity/hydrophobicity of ionic liquids can influence electrosorption of water and ultimately the supercapacitor performance.

    • Sheng Bi
    • , Runxi Wang
    • , Shuai Liu
    • , Jiawei Yan
    • , Bingwei Mao
    • , Alexei A. Kornyshev
    •  & Guang Feng
  • Article | | open

    While magnesium rechargeable batteries could combine high energy density with low cost and good safety, the extremely sluggish reaction kinetics remains to be overcome. Here, the authors show that by using solvated Mg2+ intercalation, the high charge density of bare Mg2+ may be effectively mitigated.

    • Zhenyou Li
    • , Xiaoke Mu
    • , Zhirong Zhao-Karger
    • , Thomas Diemant
    • , R. Jürgen Behm
    • , Christian Kübel
    •  & Maximilian Fichtner
  • Article | | open

    Methylammonium lead triiodide perovskite based solar cells have attracted lots of attention but many physical characteristics of this material remain elusive. Here Li et al. reveal the role of defects in the carrier recombination dynamics in photoluminescence experiments and present a model to describe it.

    • Cheng Li
    • , Antonio Guerrero
    • , Sven Huettner
    •  & Juan Bisquert
  • Article | | open

    Layered NaxMnO2 cathode suffers from structural instability and sluggish kinetics. Here the authors show a method to yield monoclinic NaMn2−y−δ(OH)2y, a new polymorph of Na-birnessite with maximum Na occupancy and enlarged interlayer spacing, enabling outstanding cyclability and rate performance.

    • Hui Xia
    • , Xiaohui Zhu
    • , Jizi Liu
    • , Qi Liu
    • , Si Lan
    • , Qinghua Zhang
    • , Xinyu Liu
    • , Joon Kyo Seo
    • , Tingting Chen
    • , Lin Gu
    •  & Ying Shirley Meng
  • Article | | open

    Silicon-based contaminants are ubiquitous in natural graphite, and they are thus expected to be present in exfoliated graphene. Here, the authors show that such impurities play a non-negligible role in graphene-based devices, and use high-purity parent graphite to boost the performance of graphene sensors and supercapacitor microelectrodes.

    • Rouhollah Jalili
    • , Dorna Esrafilzadeh
    • , Seyed Hamed Aboutalebi
    • , Ylias M. Sabri
    • , Ahmad E. Kandjani
    • , Suresh K. Bhargava
    • , Enrico Della Gaspera
    • , Thomas R. Gengenbach
    • , Ashley Walker
    • , Yunfeng Chao
    • , Caiyun Wang
    • , Hossein Alimadadi
    • , David R. G. Mitchell
    • , David L. Officer
    • , Douglas R. MacFarlane
    •  & Gordon G. Wallace
  • Article | | open

    High-conductivity solid-state electrolyte materials with minimal polarization loss are difficult to synthesize. Here the authors show single-ion block copolymers with crystalline protogenic channels having a promising potential to be used as efficient proton conductors.

    • Onnuri Kim
    • , Kyoungwook Kim
    • , U. Hyeok Choi
    •  & Moon Jeong Park