Public trust demands greater openness from those whose research is used to set policy, argues Stefan Pfenninger.
Chemistry at the nexus of water and energy
Our ability to harness reactions that absorb or release energy is often contingent on water as a mediator. We can appreciate this simply by considering the steam that drives our electricity-generating turbines, the rivers that flow through our hydroelectric plants, and the freshwater–saltwater interface from which we can harvest blue energy. Whether we split water (as plants do), make it (as a product of combustion) or just drink it, this compound is inexorably tied to energy. Chemistry is at the heart of these topics and this collection brings together content from across Nature Research that focuses on the chemistry of energy production and water treatment.
Stop these promising photovoltaics from degrading, urge Yang Yang and Jingbi You.
Decades of experience must inform future initiatives, urge Gabriel Chan and colleagues.
Artificial intelligence can speed up research into new photovoltaic, battery and carbon-capture materials, argue Edward Sargent, Alán Aspuru-Guzikand colleagues.
The tunable bandgap of perovskites and their combination in multi-junction solar cells can afford highly efficient photovoltaic technologies. This Review reports the latest developments in tandem multi-junction perovskite solar cells and discusses prospects for this technology to achieve energy conversion efficiencies well beyond those attained by silicon-based cells.
The technological progress made since the industrial revolution has brought with it one of our greatest challenges: how to power our world while also minimizing environmental harm. This Perspective highlights the important role that quantum chemistry has in sustainable energy research.
Miniature hydrogel compartments in scalable stacked and folded geometries were used to prepare a contact-activated artificial electric organ.
Converting oxygen-rich biomass into fuels requires the removal of oxygen groups through hydrodeoxygenation. MoS2 monolayer sheets decorated with isolated Co atoms bound to sulfur vacancies in the basal plane have now been synthesized that exhibit superior catalytic activity, selectivity and stability for the hydrodeoxygenation of 4-methylphenol to toluene when compared to conventionally prepared materials.
Vibronically coherent ultrafast triplet-pair formation and subsequent thermally activated dissociation control efficient endothermic singlet fission
Singlet fission — the conversion of one singlet exciton into two triplet excitons, could improve the efficiency of photovoltaic devices — but its mechanism is still to be fully understood. Now, in films of TIPS-tetracene, it has been shown that the formation of the triplet pair state, which has been proposed to mediate singlet fission, is ultrafast and vibronically coherent in this endothermic fission system.
It is still a great challenge to synthesize value-added products with two or more carbons directly from CO2. Now, a bifunctional catalyst composed of reducible metal oxides (In2O3) and zeolites (HZSM-5) is prepared and yields high selectivity to gasoline-range hydrocarbons (78.6%) with a high octane number directly from CO2 hydrogenation.
Direct hydrogenation of CO2 into liquid fuels can mitigate CO2 emissions and reduce the rapid depletion of fossil fuels. Here, the authors show an iron-based multifunctional catalyst that converts CO2 to gasoline with high selectivity due to synergistic cooperation of multiple catalytic active sites.
Vertically co-oriented two dimensional metal-organic frameworks for packaging enhanced supercapacitive performance
Metal-organic frameworks are candidates for future energy storage materials, but are limited by poor conductivity and random crystal orientation on current collectors. Here, fabrication of electrodes containing uniformly oriented crystals supported by carbon nanowalls leads to improved electrochemical performance.
Graphene oxide membranes are promising materials for the separation of low molecular weight gases. Here, composite membranes comprising metal organic frameworks and graphene oxide show improved selectivity for the separation of hydrogen and carbon dioxide over graphene oxide alone.
Sodium-ion batteries are an appealing alternative to lithium-ion batteries because they use raw materials that are less expensive, more abundant and less toxic. The background leading to such promises is carefully assessed in terms of cell and battery production, as well as raw material supply risks, for sodium-ion and modern lithium-ion batteries.