Stabilizing layered superlattice MoSe_(2) anodes by the rational solvation structure design for low-temperature aqueous zinc-ion batteries  

作　　者：Zeheng Lv Yuanhong Kang Rong Tang Jin Yang Guanhong Chen Yuhan Hu Pengxiang Lin Huiya Yang Qilong Wu Minghao Zhang Fenghua Chen Yueying Peng Yang Yang Jinbao Zhao 

机构地区：[1]State Key Laboratory of Physical Chemistry of Solid Surfaces,State-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle,Tan Kah Kee Innovation Laboratory(IKKEM),College of Chemistry and Chemical Engineering,Xiamen University,Xiamen,China [2]School of Resources and Chemical Engineering,Sanming University,Sanming,China [3]International Center for Young Scientists,Center for Green Research on Energy and Environmental Materials,National Institute for Material Science,Tsukuba,Ibaraki,Japan

出　　处：《Electron》2023年第1期70-79,共10页电子（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:22109030,22021001;Fundamental Research Funds for the Central Universities,Grant/Award Number:20720220073;The Key Research and Development Program of Yunnan Province,Grant/Award Number:202103AA080019;Fujian Industrial Technology Development,and Application Plan,Grant/Award Number:2022I0002。

摘　　要：Aqueous zinc-ion batteries(AZIBs)have attracted widespread attention due to their intrinsic merits of low cost and high safety.However,the poor thermodynamic stability of Zn metal in aqueous electrolytes inevitably cause Zn dendrites growth and interface parasitic side reactions,resulting in unsatisfactory cycling stability and low Zn utilization.Replacing Zn anode with intercalation-type anodes have emerged as a promising alternative strategy to overcome the above issues but the lack of appropriate anode materials is becoming the bottleneck.Herein,the interlayer structure of MoSe_(2) anode is preintercalated with long-chain polyvinyl pyrrolidone(PVP),constructing a periodically stacked p-MoSe_(2)superlattice to activate the reversible Zn^(2+) storage performance(203 mAh g^(−1)at 0.2 A g^(−1)).To further improve the stability of the superlattice structure during cycling,the electrolyte is also rationally designed by adding 1,4-Butyrolactone(γ-GBL)additive into 3 M Zn(CF_(3)SO_(3))_(2),in whichγ-GBL replaces the H2O in Zn^(2+) solvation sheath.The preferential solvation ofγ-GBL with Zn^(2+)effectively reduces the water activity and helps to achieve an ultra-long lifespan of 12,000 cycles for p-MoSe_(2).More importantly,the reconstructed solvation structure enables the operation of p-MoSe_(2)||ZnxNVPF(Na3V2(PO4)2O_(2)F)AZIBs at an ultra-low temperature of−40°C,which is expected to promote the practical applications of AZIBs.

关 键 词：intercalation-type anodes p-MoSe_(2)||Zn_(x)NVPF periodically stacked p-MoSe_(2)superlattice solvation sheath ultra-long lifespan 

分 类 号：TM912[电气工程—电力电子与电力传动]