环十二烷
锌
材料科学
分子
水溶液
枝晶(数学)
金属
自行车
电解质
无机化学
冶金
有机化学
电极
立体化学
化学
物理化学
几何学
数学
考古
历史
作者
Ruheng Jiang,Tuoya Naren,Yuejiao Chen,Chunxiao Zhao,Chunxiao Zhang,Lixin Ma,Han Xu,Libao Chen,Liangjun Zhou,Weifeng Wei
标识
DOI:10.1016/j.ensm.2023.103044
摘要
Aqueous zinc (Zn) metal batteries have received widespread attention for their high safety and low cost, but some problems during cycling such as dendrite growth, hydrogen evolution reaction, and corrosion reaction hinder their application. Herein, the organic small molecule 1.4.7.10-tetraazacyclododecane (cyclen) is introduced as an effective additive in zinc sulfate electrolyte. Due to abundant N and cyclic structure, cyclen not only has stronger coordination than H2O molecules, resulting in the changed solvation structure of Zn2+, but also preferentially adsorbs onto the Zn (002) plane, inducing uniform deposition of Zn2+. Therefore, the Zn||Zn symmetrical cell achieved long-term cycling of over 2400 h at 1 mA cm−2 and 1 mAh cm−2. Moreover, the performance of Zn||V2O5 full cell was improved by the addition of cyclen, with a capacity retention rate of 90.9 % after 2000 cycles under 3 A g−1.
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