首页|Stable zinc metal anodes achieved by dynamic counteracting tip effect and interfacial ion redistribution
Stable zinc metal anodes achieved by dynamic counteracting tip effect and interfacial ion redistribution
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Aqueous zinc metal batteries(AZMBs)are hindered by uncontrolled dendrites and side reactions during commercialization,despite their advantages of safety and high capacity density.Herein,we propose the electrical feedback strategy to restrain the Zn dendrites resulting from the"tip effect"and optimize inter-facial Zn2+distribution to accelerate electrodeposition kinetics by using the lithium niobate(LNO)layer.Specifically,at the bumps of the zinc anode,the ferroelectric LNO is polarized by the locally strong elec-tric field,which in turn counteracts the"tip effect".In this way,the dynamic polarization of LNO can repair the uneven tip electric field to achieve uniform and flat zinc deposition.In addition,owing to the interaction between Nb and Zn2+,a higher concentration of Zn2+near the zincophilic LNO@Zn surface is obtained for the rapid electrochemical reaction kinetics of plating.Considering the aforementioned advantages,the LNO@Zn anode harvests stable cycling over 1200 h at 10 mA cm-2 with a superior cumu-lative capacity of 5800 mAh cm-2.Assembled with the α-MnO2 cathode,the full cell using LNO@Zn anode exhibits the slower capacity decay(0.054％per cycle)during 1000 cycles.This strategy provides a per-spective for stabilizing zinc metal anodes through dynamic electrical response and interfacial ion redis-tribution effect.
Leilei Sun、Yang Wang、Kun Zhang、Bin Luo、Guosheng Duan、Sinan Zheng、Zhean Bao、Jingyun Huang、Zhizhen Ye
展开 >
State Key Laboratory of Silicon and Advanced Semiconductor Materials,School of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China
Institute of Wenzhou,Zhejiang University,Wenzhou 325006,Zhejiang,China
Institute of Thermal Science and Power Systems,Zhejiang University,Hangzhou 310027,Zhejiang,China
NETL
NSTL
万方数据
