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Volume 7 Issue 11, November 2022

Decipher the reversibility

It is challenging to achieve high reversibility of lithium-metal batteries due to problems such as the formation of dendritic lithium (shown in black) at the anode during cycling. Now, Deng et al. develop an analytic method to quantify lithium in its electrochemically inactive and active states, untangling the complex behaviour of the anode reversibility.

See Deng et al.

Image: Xufeng Zhou, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences. Cover Design: Thomas Phillips.

Comment & Opinion

  • A pro-health fuels and stoves agenda based on the World Health Organization standards can realign lagging progress toward meeting the United Nations Sustainable Development Goal 7’s call for universal energy and clean cooking access by 2030, combat the household energy crisis, and promote health and social justice.

    • Annelise Gill-Wiehl
    • Daniel M. Kammen
    Comment

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News & Views

  • Understanding how beliefs about renewable energy sources are influenced by exposure to information is important for the successful implementation of policies to combat climate change. New longitudinal research shows that messages emphasizing specific benefits of renewable energy can exert a lasting impact on partisans’ beliefs.

    • Toby Bolsen
    News & Views
  • Lithium-metal batteries offer great energy density improvement over lithium-ion, but understanding their cyclability is a daunting task. Now, an analytical method is reported to quantify lithium in its electrochemically inactive and active forms, enabling insights about the anode reversibility throughout cycling.

    • Zachary M. Konz
    • Bryan D. McCloskey
    News & Views
  • Pyroelectric materials have potential applications in sensors and energy harvesters but it is difficult for these materials to deliver energy in the joule range. Now, a pyroelectric harvester made of lead scandium tantalate with a multilayer structure is shown to generate about 4.43 J cm–3 from each thermodynamic cycle.

    • Ya Yang
    News & Views
  • Electrochemical CO2 capture could potentially avoid large energy inputs typical of approaches based on temperature and pressure swings, but better sorbents are still needed. New research expands the sorbent library using molecules with redox-tuneable sp2 nitrogen centres as effective electrochemical CO2 capture agents.

    • William A. Tarpeh
    News & Views
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Research Briefings

  • Collections of Pt monomers (close to each other but not directly bonded) supported on black TiO2 exhibit superior photocatalytic performance in the nonoxidative dehydrogenation of alkanes than that of single-atom catalysts. The extent of clustering of Pt species has a decisive role in determining the reaction activity and product selectivity.

    Research Briefing
  • Evidence from a policy experiment shows that public safety bans on electric scooters and electric bikes can generate unintended traffic congestion in city centres. The studied ban is found to increase travel times by 9–11% for daily evening commutes and by 37% following stadium events.

    Research Briefing
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Reviews

  • Discussions abound regarding the future of African energy systems, yet they typically overlook the different starting points and development objectives of each country. This Perspective highlights these differences and calls for more context-specific attention to define low-carbon energy pathways.

    • Yacob Mulugetta
    • Youba Sokona
    • Abdulmutalib Yussuff
    Perspective
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Amendments & Corrections

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