Stable Anion-Rectifying Poly(alkoxide magnesium) Electrolytes for Reversible Magnesium Metal Batteries

被引：15

作者：

Ge, Xuesong ^{[1
]}

Song, Fuchen ^{[2
]}

Du, Aobing ^{[1
]}

Sun, Gaohao ^{[1
]}

Zhang, Shu ^{[1
]}

Zhao, Jingwen ^{[1
]}

Zhang, Qingwei ^{[1
]}

Zhou, Xinhong ^{[3
]}

Zhang, Botao ^{[2
]}

Cui, Guanglei ^{[1
,4
]}

机构：

[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Res Inst, Qingdao 266101, Peoples R China

[2] Qingdao Univ Sci & Technol, Sch Chem & Chem Engn, Qingdao 266071, Peoples R China

[3] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[4] Shandong Energy Inst, Qingdao 266101, Peoples R China

来源：

ACS ENERGY LETTERS | 2023年 / 8卷 / 09期

基金：

中国国家自然科学基金;

关键词：

RADICAL POLYMERIZATION; CONDUCTIVITY; WINDOW; SALTS; AL;

D O I：

10.1021/acsenergylett.3c01192

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Therechargeable magnesium battery (RMB) has emerged as a safe,cost-effective, and high-energy alternative to conventional batteries.Yet their practical applications have been plagued predominantly bysevere Mg passivation induced by anion-triggered interfacial sidereactions with Mg-metal anodes. Herein, an anion-rectifying poly(alkoxidemagnesium) electrolyte with a high stability is reported. This polymerelectrolyte demonstrates exceptional electrochemical performance forreversible Mg plating/stripping with a Coulombic efficiency up to99.99%, thus enabling highly reversible cycling of the RMBs with 80%capacity retention after 1000 cycles. Furthermore, this polymer electrolyteretains its activity even after exposure to air with 33% relativehumidity for 12 h. As a result, the as-assembled Mg//O-2 full batteries deliver significantly improved performance due totheir high air stability. This work provides a universal design principlefor stable polymer electrolytes toward highly reversible RMBs, whichwill significantly boost the development of high-energy RMBs.

引用

页码：3685 / 3692

页数：8

共 38 条

[1] Poly(ethylene oxide) (PEO) - Poly(vinyl pyrrolidone) (PVP) blend polymer based solid electrolyte membranes for developing solid state magnesium ion cells [J].