锌
水溶液
材料科学
化学工程
废物管理
工程类
化学
冶金
有机化学
作者
Glenn Pastel,Travis P. Pollard,Qian Liu,Sydney N. Lavan,Qiancheng Zhu,Rongzhong Jiang,Lin Ma,Justin G. Connell,Oleg Borodin,Marshall A. Schroeder,Zhengcheng Zhang,Ke Xu
出处
期刊:Joule
[Elsevier]
日期:2024-04-01
卷期号:8 (4): 1050-1062
被引量:1
标识
DOI:10.1016/j.joule.2024.02.002
摘要
Recent efforts to improve zinc metal anode reversibility in aqueous electrolytes have primarily focused on tailoring Zn2+ solvation. We propose a complementary approach to directly engineer the anode interphase with the help of two co-cations. The designed organic co-cations offer distinct improvements: a partially fluorinated pyrrolidinium cation effectively suppresses parasitic reactions such as hydrogen evolution (<6 μA cm−2), while an ether-functionalized ammonium cation inhibits dendrite formation (almost 10 Ah cm−2 cumulative capacity, >1 year, Zn||Zn). Only 3 wt % of the co-cation combination enables full utilization of a 5-mAh cm−2 reservoir with over 99% Coulombic efficiency and 1,000 cycles with 20% reservoir utilization. We further validate this concept in Zn metal batteries with various cathode chemistries (O2, polyaniline, and HNaV6O16), and we have achieved significant enhancements in performance. This suggests co-cations are a promising and universal approach to improve metal anode reversibility across emerging battery chemistries.
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