Selection of Negative Charged Acidic Polar Additives to Regulate Electric Double Layer for Stable Zinc Ion Battery  

作　　者：Xing Fan Lina Chen Yongjing Wang Xieyu Xu Xingxing Jiao Peng Zhou Yangyang Liu Zhongxiao Song Jiang Zhou 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China [2]School of Materials Science and Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,People’s Republic of China [3]Research Institute of Frontier Science,Southwest Jiaotong University,Chengdu 610031,People’s Republic of China [4]Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology,Hunan University of Science and Technology,Xiangtan 411201,People’s Republic of China [5]School of Instrument Science and Technology,Xi’an Jiaotong University,Xi’an 710049,People’s Republic of China [6]School of Materials Science and Engineering,Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials,Central South University,Changsha 410083,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第12期342-356,共15页纳微快报（英文版）

基　　金：funded by the National Natural Science Foundation of China(U21B2057,12102328,and 52372252);the Newly Introduced Scientific Research Start-up Funds for Hightech Talents(DD11409024).

摘　　要：Zinc-ion batteries are promising for large-scale electrochemical energy storage systems,which still suffer from interfacial issues,e.g.,hydrogen evolution side reaction(HER),self-corrosion,and uncontrollable dendritic Zn electrodeposition.Although the regulation of electric double layer(EDL)has been verified for interfacial issues,the principle to select the additive as the regulator is still misted.Here,several typical amino acids with different characteristics were examined to reveal the interfacial behaviors in regulated EDL on the Zn anode.Negative charged acidic polarity(NCAP)has been unveiled as the guideline for selecting additive to reconstruct EDL with an inner zincophilic H_(2)O-poor layer and to replace H_(2)O molecules of hydrated Zn^(2+)with NCAP glutamate.Taking the synergistic effects of EDL regulation,the uncontrollable interface is significantly stabilized from the suppressed HER and anti-self-corrosion with uniform electrodeposition.Consequently,by adding NCAP glutamate,a high average Coulombic efficiency of 99.83%of Zn metal is achieved in Zn|Cu asymmetrical cell for over 2000 cycles,and NH4V4O10|Zn full cell exhibits a high-capacity retention of 82.1%after 3000 cycles at 2 A g^(-1).Recapitulating,the NCAP principle posted here can quicken the design of trailblazing electrolyte additives for aqueous Zn-based electrochemical energy storage systems.

关 键 词：Aqueous Zn-ion batteries Zn metal anode Negative charged acidic polar additives Electric double-layer regulation 

分 类 号：TM912[电气工程—电力电子与电力传动]