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 

作者机构：State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University School of Materials Science and Engineering Harbin Institute of Technology (Shenzhen) Research Institute of Frontier Science Southwest Jiaotong University Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology Hunan University of Science and Technology School of Instrument Science and Technology Xi'an Jiaotong University School of Materials Science and Engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials Central South University 

出 版 物：《Nano-Micro Letters》 (纳微快报(英文))

年 卷 期：2024年第12期

页      面：350-364页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

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 H2O-poor layer and to replace H2O molecules of hydrated Zn2+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.