Modulating the solvation structure and electrode interface through phosphate additive for highly reversible zinc metal anode

被引：4

作者：

Wei, Wangran ^{[1
]}

Zhang, Feng ^{[1
]}

Li, Houzhen ^{[1
]}

Kang, Yongchao ^{[1
]}

Sang, Yuanhua ^{[1
]}

Liu, Hong ^{[1
,2
]}

Xin, Sen ^{[3
,4
]}

Wang, Shuhua ^{[1
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Jinan Inst Quantum Technol, Hefei Natl Lab, Jinan Branch, Jinan 250101, Peoples R China

[3] Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Inst Chem,Beijing Natl Lab Mol Sci BNLMS, Beijing 100190, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2024年 / 485卷

基金：

中国国家自然科学基金;

关键词：

Zinc-ion batteries; Electrolyte; Solvation structure; Dendrite-free electrode/electrolyte interphase; HIGH-PERFORMANCE; ZN; DENDRITE; KINETICS; STABILITY;

D O I：

10.1016/j.cej.2024.149944

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aqueous zinc-ion batteries (ZIBs) are considered one of the ideal battery systems for large-scale energy storage. However, ZIBs usually show a limited cycle life due to side reactions and dendrite growth at Zn anode. In this study, an ultra-trace amount of beta-glycerophosphate sodium (beta-GADS) was employed as an additive in aqueous electrolyte to enable highly reversible Zn plating/stripping. For the first time, we show that the phosphate groups in beta-GADS could participate in the cation solvation structure, which is more favorable for the de-solvation and diffusion of Zn2+. Moreover, phosphate can absorb on the surface of Zn, and Na+ tend to accumulate at the surface protrusions to form an electrostatic shield that prevent formation of dendrites. Benefitting from the triply synergistic effects of the beta-GADS additive, the Zn anode shows the inhibition of dendrites, hydrogen evolution reaction, corrosion reactions, and the formation of by-products. Operated based on 2 M ZnSO4 electrolyte with beta-GADS additive, Zn||Zn symmetric cells demonstrated stable cycling for over 1,900 h at 0.5 mA cm-2 and over 1,200 h at a high current density of 5 mA cm-2. The Zn||(NH4)2V7O16 & sdot;3.2H2O full cell with the above electrolyte also delivered a high capacity and excellent stability for over 1,000 cycles.

引用

页数：11