Interface engineering of Zn meal anodes using electrochemically inert Al_(2)O_(3)protective nanocoatings  

作　　者：Rui Wang Qiongfei Wu Minjie Wu Jiaxian Zheng Jian Cui Qi Kang Zhengbing Qi JiDong Ma Zhoucheng Wang Hanfeng Liang 

机构地区：[1]State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [2]Key Laboratory of Functional Materials and Applications of Fujian Province,School of Materials Science and Engineering,Xiamen University of Technology,Xiamen 361024,China [3]Department of Polymer Science and Engineering,Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Nano Research》2022年第8期7227-7233,共7页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(Nos.51601163,22001081,and 22075236);the National Key Research and Development Program of China(No.2017YFE0198100);the Natural Science Foundation of Fujian Province(No.2021J011211);Xiamen Municipal Bureau of Science and Technology(No.3502Z20206070),and Xiamen University.

摘　　要：Aqueous rechargeable Zn-ion batteries are regarded as a promising alternative to lithium-ion batteries owing to their high energy density,low cost,and high safety.However,their commercialization is severely restricted by the Zn dendrite formation and side reactions.Herein,we propose that these issues can be minimized by modifying the interfacial properties through introducing electrochemically inert Al_(2)O_(3)nanocoatings on Zn meal anodes(Al_(2)O_(3)@Zn).The Al_(2)O_(3)nanocoatings can effectively suppress both the dendrite growth and side reactions.As a result,the Al_(2)O_(3)@Zn symmetric cells show excellent electrochemical performance with a long lifespan of more than 4,000 h at 1 mA·cm^(−2)and 1 mAh·cm^(−2).Meanwhile,the assembled Al_(2)O_(3)@Zn//V_(2)O_(5)full cells can deliver a high capacity(236.2 mAh·g^(−1))and long lifespan with a capacity retention of 76.11%after 1,000 cycles at 4 A·g^(−1).

关 键 词：aqueous Zn-ion batteries Zn dendrites side reactions Al2O3 protective nanocoatings interface engineering 

分 类 号：TB383[一般工业技术—材料科学与工程] O646[理学—物理化学]