High-Energy Rechargeable Metallic Lithium Battery at-70°C Enabled by a Cosolvent Electrolyte

被引：280

作者：

Dong, Xiaoli ^{[1
,2
]}

Lin, Yuxiao ^{[3
]}

Li, Panlong ^{[1
,2
]}

Ma, Yuanyuan ^{[1
,2
]}

Huang, Jianhang ^{[1
,2
]}

Bin, Duan ^{[1
,2
]}

Wang, Yonggang ^{[1
,2
]}

Qi, Yue ^{[3
]}

Xia, Yongyao ^{[1
,2
,4
]}

机构：

[1] Fudan Univ, iChEM Collaborat Innovat Ctr Chem Energy Mat, Inst New Energy, Dept Chem, Shanghai 200433, Peoples R China

[2] Fudan Univ, iChEM Collaborat Innovat Ctr Chem Energy Mat, Inst New Energy, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

[3] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA

[4] Zhejiang Normal Univ, Dept Chem, Minist Educ Adv Catalysis, Key Lab,Mat, Jinhua 321004, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 17期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

co-solvent electrolyte; high energy density; lithium-metal batteries; low temperature;

D O I：

10.1002/anie.201900266

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Lithium metal is an ideal anode for high-energy rechargeable batteries at low temperature, yet hindered by the electrochemical instability with the electrolyte. Concentrated electrolytes can improve the oxidative/reductive stability, but encounter high viscosity. Herein, a co-solvent formulation was designed to resolve the dilemma. By adding electrochemically "inert" dichloromethane (DCM) as a diluent in concentrated ethyl acetate (EA)-based electrolyte, the co-solvent electrolyte demonstrated a high ionic conductivity (0.6 mScm(-1)), low viscosity (0.35 Pas), and wide range of potential window (0-4.85 V) at -70 degrees C. Spectral characterizations and simulations show these unique properties are associated with the co-solvation structure, in which high-concentration clusters of salt in the EA solvent were surrounded by mobile DCM diluent. Overall, this novel electrolyte enabled rechargeable metallic Li battery with high energy (178 Whkg(-1)) and power (2877 W kg(-1)) at -70 degrees C.

引用

页码：5623 / 5627

页数：5

共 18 条

[1]

Neelakantan P., 1963, Proceedings of the Indian Academy of Sciences-Section A, P330

[2] High rate and stable cycling of lithium metal anode [J].

Qian, Jiangfeng ;

Henderson, Wesley A. ;

Xu, Wu ;

Bhattacharya, Priyanka ;

Engelhard, Mark ;

Borodin, Oleg ;

Zhang, Ji-Guang .

NATURE COMMUNICATIONS, 2015, 6

[3] Liquefied gas electrolytes for electrochemical energy storage devices [J].

Rustomji, Cyrus S. ;

Yang, Yangyuchen ;

Kim, Tae Kyoung ;

Mac, Jimmy ;

Kim, Young Jin ;

Caldwell, Elizabeth ;

Chung, Hyeseung ;

Meng, Shirley .

SCIENCE, 2017, 356 (6345)

[4] Li+ Solvation in Pure, Binary, and Ternary Mixtures of Organic Carbonate Electrolytes [J].

Skarmoutsos, Ioannis ;

Ponnuchamy, Veerapandian ;

Vetere, Valentina ;

Mossa, Stefano .

JOURNAL OF PHYSICAL CHEMISTRY C, 2015, 119 (09) :4502-4515

[5] Lithium-Ion Electrolytes Containing Ester Cosolvents for Improved Low Temperature Performance [J].

Smart, M. C. ;

Ratnakumar, B. V. ;

Chin, K. B. ;

Whitcanack, L. D. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2010, 157 (12) :A1361-A1374

[6] The Effect of Additives upon the Performance of MCMB/LiNixCo1-xO2 Li-Ion Cells Containing Methyl Butyrate-Based Wide Operating Temperature Range Electrolytes [J].

Smart, Marshall C. ;

Lucht, Brett L. ;

Dalavi, Swapnil ;

Krause, Frederick C. ;

Ratnakumar, Bugga V. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2012, 159 (06) :A739-A751

[7] "Water-in-salt" electrolyte enables high-voltage aqueous lithium-ion chemistries [J].

Suo, Liumin ;

Borodin, Oleg ;

Gao, Tao ;

Olguin, Marco ;

Ho, Janet ;

Fan, Xiulin ;

Luo, Chao ;

Wang, Chunsheng ;

Xu, Kang .

SCIENCE, 2015, 350 (6263) :938-943

[8]

Yamada Y, 2016, NAT ENERGY, V1, DOI [10.1038/nenergy.2016.129, 10.1038/NENERGY.2016.129]

[9]

2018, JOULE, V2, P902, DOI DOI 10.1016/J.JOULE.2018.01.017

[10]

2018, ADV ENERGY MATER, V8

← 1 2 →