The Electrolyte Additive Effects on Commercialized Ni-Rich LiNi(x)Co(y)MnzO(2) (x plus y plus z=1) Based Lithium-Ion Pouch Batteries at High Temperature
作者:Wang, CY (Wang, Chengyun)[ 1,2 ] ; Hu, QQ (Hu, Qianqian)[ 2 ] ; Hao, JN (Hao, Junnan)[ 3 ] ; Xu, XJ (Xu, Xijun)[ 1 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1 ] ; Fan, WZ (Fan, Weizhen)[ 4 ] ; Ye, JS (Ye, Jianshan)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1 ] ; Li, J (Li, Jin)[ 2 ] ; Mei, A (Mei, Ao)[ 2 ] ...更多内容
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ACS APPLIED ENERGY MATERIALS
卷: 4 期: 3 页: 2292-2299
DOI: 10.1021/acsaem.0c02824
出版年: MAR 22 2021
文献类型:Article
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摘要
The commercialized lithium-ion pouch cells with an Ni-rich cathode material feature high energy density and are favored in the automotive market; however, they still suffer from rapid capacity loss and poor cyclability due to the unstable solid electrolyte interphase (SEI) at the anode surface under a high temperature. Here, an effective electrolyte additive of tripropargyl phosphate (TPP) is studied to improve the high-temperature performance of the Ni-rich cathode-based pouch cells. Resulting from the electrochemical reductions of TPP, a TPP-originated and phosphorus-rich SEI layer formed on the surface of a graphite anode, which directly avoids the graphite plates from being exposed in the electrolyte and suppresses the repeated consumption of cyclable Li+. After the storage for 15 days under 60 degrees C, an initial discharge capacity of 147.9 mAh g(-1) can be achieved for the LiNi0.6Co0.2 Mn0.2O2 /graphite cell containing 1.0 wt % TPP, much higher than the value (132.2 mAh g(-1)) of the TPP-free cell. Meanwhile, the cycling performance at a high temperature for the LiNi0.8Co0.1Mn0.1O2/graphite cell is also significantly improved by introducing 1.0 wt % TPP into the electrolyte. Such an outstanding electrochemical performance and the solid evidences strongly confirmed that the stabilized anode surface film induced by the TPP addition plays a crucial role in enhancing the performance of commercialized cells.
关键词
作者关键词:lithium-ion pouch cell; high-temperature performance; electrolyte additive; solid electrolyte interphase; tripropargyl phosphate
KeyWords Plus:LI-ION; VINYLENE CARBONATE; NONFLAMMABLE ELECTROLYTES; PERFORMANCE; PHOSPHATE; SOLVENT; STORAGE; CELLS
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
通讯作者地址: Ouyang, LZ (通讯作者)
显示更多 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
地址:
显示更多 [ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
[ 2 ] GAC Automot Res & Dev Ctr, Guangzhou 511434, Peoples R China
显示更多 [ 3 ] Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia
[ 4 ] Guangzhou Tinci Mat Technol Co Ltd, Guangzhou 510760, Peoples R China
电子邮件地址:meouyang@scut.edu.cn
基金资助致谢
基金资助机构显示详情 授权号
National Natural Science Foundation of China (NSFC)
NSFC51621001
51771075
51571091
21875070
China Postdoctoral Science Foundation
2020M682662
Science and Technology Projects of Guangzhou
201604016131
Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme
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出版商
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Energy & Fuels; Materials Science
Web of Science 类别:Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary