电解质
阳极
螯合作用
电化学
锌
材料科学
水溶液
吸附
枝晶(数学)
化学工程
无机化学
冶金
化学
电极
有机化学
物理化学
数学
几何学
工程类
作者
Li Xi,Zhenjie Chen,Pengchao Ruan,Xueqiang Hu,Bingan Lu,Xingxing Yuan,Siyu Tian,Junhu Zhou
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2024-01-01
卷期号:16 (6): 2923-2930
被引量:11
摘要
Aqueous zinc-ion batteries (AZIBs) have demonstrated great potential for large-scale energy storage. However, their practical applications have been restricted by fast Zn dendrite growth and severe side reactions at the Zn/electrolyte interface. Herein, sodium gluconate is incorporated into a mild acidic electrolyte as a multifunctional additive to stabilize the Zn anode. Experiments and theoretical calculations reveal that the SG additive can induce planar growth of Zn along its (002) direction, thereby inhibiting Zn dendrite growth. This dendrite inhibition effect is attributed to the preferential adsorption of Zn2+ on the Zn (002) plane, while the Zn (100) and (101) planes are shielded by gluconate ions. Consequently, Zn||Zn symmetric cells with the electrolyte additive exhibit significantly prolonged cycle lives of 2000 h at 1 mA cm-2, 1 mA h cm-2 and 900 h at 5 mA cm-2, 2.5 mA h cm-2. Futhermore, the Zn||NH4V4O10 full cell retains 95% of its initial capacity after 2000 cycles at a current density of 5 A g-1 with an average CE of nearly 100%. This work offers a cost-effective strategy to enhance the electrochemical performance of AZIBs.
科研通智能强力驱动
Strongly Powered by AbleSci AI