Ultralong cycle stability of aqueous zinc-ion batteries with zinc vanadium oxide cathodes

作者：Lulu Wang, Kuo‐Wei Huang, Jitao Chen, Junrong Zheng · 发表于：Science Advances · 年份：2019 · DOI：10.1126/sciadv.aax4279 · 被引用次数：675 · 研究领域：Advanced battery technologies research、Supercapacitor Materials and Fabrication、Advanced Battery Materials and Technologies

. Its electrochemical mechanism is elucidated. The lattice contraction induced by zinc intercalation and the expansion caused by hydronium intercalation cancel each other and allow the lattice to remain constant during charge/discharge, favoring cyclic stability. The hierarchically porous structure provides abundant contact with electrolyte, shortens ion diffusion path, and provides cushion for relieving strain generated during electrochemical processes, facilitating both fast kinetics and long-term stability.