期刊
ELECTROCHIMICA ACTA
卷 296, 期 -, 页码 149-154出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.11.036
关键词
Organosilicon compound; Electrolyte solvent; Safety; 13 Ah cell; Lithium-ion batteries
资金
- K.C. Wong Education Foundation
- Guangdong Provincial Project for Science and Technology [2014A050503050/2015B010135008]
- Guangzhou Municipal Project for Science and Technology [2014Y2-00012/201509010018]
- National Natural Science Foundation of China [21573239]
CN(CH2)(2)Si(CH3)(OCH2CH2OCH3)(2) (BNS) is used as electrolyte solvent to improve the safety for LiNi1/3Co1/3Mn1/3O2 (NCM)/graphite battery. BNS increases the thermal stability of the carbonate-based electrolyte with (de) lithiated cathode/anode and the electrochemical stability of coin cells. By using an optimal BNS-based electrolyte formula, 13 Ah NCM/graphite prismatic cell achieves 95.8% retain of capacity at 2 C/3 C (charge/discharge) rate after 600 cycles. Meanwhile, 13 Ah prismatic cell exhibits improved safety performance in the nail penetration test. (C) 2018 Elsevier Ltd. All rights reserved.
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