Co-activation for enhanced K-ion storage in battery anodes
作者机构：School of Physics and Electronics Hunan University Department of Physics and Astronomy Clemson Nanomaterials Institute Clemson University Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China School of Materials Science and Engineering Central South University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2023年第10卷第7期
页 面：183-195页
核心收录：
基 金：supported by the National Natural Science Foundation of China (U20A20247, 51922038 and 52122212) the Youth Innovation Promotion Association of the Chinese Academy of Sciences (2020458) the National Key Research and Development Program of China (2019YFA0307900) the seed funding provided by the R.A.Bowen Endowed Professorship funds at Clemson University
主 题：potassium ion batteries anode co-activation high reversible capacity
摘 要：The relative natural abundance of potassium and potentially high energy density has established potassium-ion batteries as a promising technology for future large-scale global energy ***,the anodes’ low capacity and high dis charge platform lead to low energy density,which impedes their rapid ***,we present a possible co-activation mechanism between bismuth(Bi) and tin(Sn)that enhances K-ion storage in battery *** co-activated Bi-Sn anode delivered a high capacity of634 mAh g-1,with a discharge plateau as low as 0.35 V,and operated continuously for 500 cycles at a current density of 50 mA g-1,with a high Coulombic efficiency of 99.2%.This possible co-activation strategy for high potassium storage may be extended to other Na/Zn/Ca/Mg/Al ion battery technologies,thus providing insights into how to improve their energy storage ability.
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