Enabling an intrinsically safe and high-energy-density 4.5 V-class Li-ion battery with nonflammable electrolyte
Ziqi Zeng
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorXingwei Liu
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorXiaoyu Jiang
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorZhenjie Liu
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
Search for more papers by this authorZhangquan Peng
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
Search for more papers by this authorXiangming Feng
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China
Search for more papers by this authorWeihua Chen
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China
Search for more papers by this authorDingguo Xia
Key Lab of Theory and Technology for Advanced Batteries Materials, College of Engineering, Peking University, Beijing, China
Search for more papers by this authorXinping Ai
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorHanxi Yang
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorCorresponding Author
Yuliang Cao
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Correspondence
Yuliang Cao, Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
Email: [email protected]
Search for more papers by this authorZiqi Zeng
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorXingwei Liu
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorXiaoyu Jiang
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorZhenjie Liu
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
Search for more papers by this authorZhangquan Peng
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China
Search for more papers by this authorXiangming Feng
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China
Search for more papers by this authorWeihua Chen
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China
Search for more papers by this authorDingguo Xia
Key Lab of Theory and Technology for Advanced Batteries Materials, College of Engineering, Peking University, Beijing, China
Search for more papers by this authorXinping Ai
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorHanxi Yang
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Search for more papers by this authorCorresponding Author
Yuliang Cao
Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
Correspondence
Yuliang Cao, Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
Email: [email protected]
Search for more papers by this authorFunding information: National Key R&D Program of China, Grant/Award Number: 2016YFB0100200; National Nature Science Foundation of China, Grant/Award Number: 21972108
Abstract
Developing nonflammable electrolyte with a wide electrochemical window has become an urgent demand for high-energy-density and high-safe lithium-ion batteries (LIBs). Herein, a fluorinated nonflammable phosphate electrolyte is developed to construct a safe 4.5 V-class LIB (Si-SiC-C/0.35Li2MnO3·0.65LiNi0.5Mn0.5O2). The proposed fluorinated phosphate electrolyte, 0.8 M LiPF6/tris(2,2,2-trifluoroethyl) phosphate (TFEP) + 5 vol% fluoroethylene carbonate (FEC) + 5 vol% vinylene carbonate (VC), is not only completely nonflammable but also exhibits excellent oxidative/reductive stability on 0.35Li2MnO3·0.65LiNi0.5Mn0.5O2 cathode and Si-SiC-C anode. The in situ differential electrochemical mass spectrometry and X-ray photoelectron spectroscopy proved that TFEP-based electrolyte does not decompose into gases but forms a high-quality electrode-electrolyte interface on cathode surface at high working potential. The 4.5 V-class LIBs using 0.8 M LiPF6 TFEP-based nonflammable electrolyte shed some light on potential application for high-safe and low-cost larger-scale energy storage.
CONFLICT OF INTEREST
The authors declare no conflicts of interest.
Supporting Information
| Filename | Description |
|---|---|
| inf212089-sup-0001-supinfo.docxWord 2007 document , 1.5 MB | Data S1 Supporting information |
| inf212089-sup-0001-VideoS1.movQuickTime video, 4.3 MB | Video S1 Combustion experiment of 1.0 M LiPF6/EC:DEC electrolyte. |
| inf212089-sup-0002-VideoS2.movQuickTime video, 4.7 MB | Video S2 Combustion experiment of 1.0 M LiPF6/TFEP+FEC + VC electrolyte |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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