Methylsulfonylmethane-Based Deep Eutectic Solvent as a New Type of Green Electrolyte for a High-Energy-Density Aqueous Lithium-Ion Battery

被引：125

作者：

Jiang, Ping ^{[1
,2
,3
,6
]}

Chen, Liang ^{[1
,2
]}

Shao, Hezhu ^{[1
,2
]}

Huang, Shaohua ^{[4
]}

Wang, Qushi ^{[1
,2
]}

Su, Yuebin ^{[1
,2
]}

Yan, Xiaoshuang ^{[3
]}

Liang, Xinmiao ^{[3
]}

Zhang, Jiujun ^{[5
]}

Feng, Jiwen ^{[3
]}

Liu, Zhaoping ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Adv Li Ion Battery Engn Lab, Ningbo 315201, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Graphene Technol & Applicat Zhejiang Prov, Ningbo 315201, Zhejiang, Peoples R China

[3] Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China

[4] Ningbo Univ, Inst Drug Discovery Technol, Ningbo 315211, Zhejiang, Peoples R China

[5] Shanghai Univ, Inst Sustainable Energy, Coll Sci, Shanghai 200444, Peoples R China

[6] Univ Chinese Acad Sci, Beijing 100000, Peoples R China

来源：

ACS ENERGY LETTERS | 2019年 / 4卷 / 06期

基金：

中国国家自然科学基金;

关键词：

IN-SALT ELECTROLYTE; LI; WATER; RAMAN; SOLVATION; TRANSPORT; MIXTURES;

D O I：

10.1021/acsenergylett.9b00968

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：

Currently used aqueous electrolytes for lithium-ion batteries suffer from narrow potential windows of <1.5 V. In this paper, we are the first to discover the new deep eutectic solvent (DES) electrolyte of the methylsulfonylmethane-lithium perchlorate-water system, which is a safe, environmentally friendly, and low-cost "water-in-salt" aqueous electrolyte. It is found that the lithium ion can coordinate with the oxygen atom in the S=O double bond, perchlorate, and water molecule, retaining fluidity at room temperature when the molar ratios of MSM:LiClO4:H2O are 1.8:1:z (z > 0.3). This DES electrolyte performs with a satisfying electrochemical stability window (similar to 3.5 V), which enables the LiMn2O4/Li4Ti5O12 aqueous lithium-ion battery with both high energy density (>160 W h kg(-1)) and high capacity retention (72.2% after 1000 cycles). Overall, our study of this new deep DES electrolyte can enrich room-temperature "water-in-salt" aqueous electrolyte and offers new insights into exploring green aqueous electrolyte systems for lithium-ion batteries.

引用

页码：1419 / 1426

页数：15

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