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Showing 1–12 of 12 results
Advanced filters: Author: Zhangquan Peng Clear advanced filters

  • Recharging Li–O2 batteries requires oxidation of the discharge product solid Li2O2. Now a redox-mediating molecule is shown to assist this process by transferring electron–holes between solid Li2O2 and the positive electrode in a non-aqueous Li–O2 cell. This allows the cell to be charged at rates that are otherwise impossible.

    • Yuhui Chen
    • Stefan A. Freunberger
    • Peter G. Bruce
    Research
    Nature Chemistry
    Volume: 5, P: 489-494

  • Although rechargeable lithium–air batteries are receiving significant attention because of their high theoretical specific energy, carbon cathodes that are currently used decompose during oxidation and promote electrolyte decomposition on cycling. A titanium carbide-based cathode is now shown to reduce side-reactions, and exhibits enhanced reversible formation and decomposition of Li2O2.

    • Muhammed M. Ottakam Thotiyl
    • Stefan A. Freunberger
    • Peter G. Bruce
    Research
    Nature Materials
    Volume: 12, P: 1050-1056

  • Closed pores govern sodium-ion storage performance of hard carbon negative electrodes. Here, authors link pore mouth size evolution of the closed pores to the solvation structure and propose design principles for optimizing both closed pores and intrinsic defects.

    • Yibo Zhang
    • Si-Wei Zhang
    • Quan-Hong Yang
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-13

  • Ammonia can be synthesized electrochemically from nitric oxide, but the catalytic performance has generally not been satisfactory. Here the authors report a highly active copper–tin alloy for nitric oxide reduction to ammonia, which they test in a flow cell and a membrane electrode assembly.

    • Jiaqi Shao
    • Huijuan Jing
    • Jianping Xiao
    Research
    Nature Energy
    Volume: 8, P: 1273-1283

  • Nanonization of battery electrode particles is a usual way to enhance their conductivity, but the decreased tap density is detrimental to battery performance. Here, the authors coat micron-sized lithium iron phosphate with a conducting polymer layer and demonstrate some excellent electrochemical properties.

    • Limin Guo
    • Yelong Zhang
    • Zhangquan Peng
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • Although Li–O2 batteries offer high theoretical energy storage capacities, few approach these limits. Now, a class of redox mediators is shown to send the discharge reaction from the electrode surface into the electrolyte solution, boosting device capacities and providing selection criteria for future efforts.

    • Zhangquan Peng
    News & Views
    Nature Chemistry
    Volume: 15, P: 1206-1208

  • 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
    • Guoxiu Wang
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-10

  • Stable free-standing two-dimensional Bi monolayer (Bismuthene) structures have been predicted theoretically, but never realized experimentally. Here, the authors show a large-scale synthesis of free-standing Bismuthene and its electrocatalytic activity for CO2 reduction to formate.

    • Fa Yang
    • Ahmed O. Elnabawy
    • Weilin Xu
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • We report the synthesis of ruthenium nanocrystal-decorated vertically aligned graphene nanosheets grown on nickel foam. As an effective binder-free cathode for Li-O2 batteries, it can significantly reduce the charge overpotential via their effects on the oxygen evolution reaction and achieve high specific capacity, leading to an enhanced electrochemical performance.

    • Dawei Su
    • Dong Han Seo
    • Guoxiu Wang
    ResearchOpen Access
    NPG Asia Materials
    Volume: 8, P: e286