1,3,2-Dioxathiolane-2,2-dioxide as film-forming agent for propylene carbonate based electrolytes for lithium-ion batteries

被引：49
作者：
Janssen, Pia [1 ]
Schmitz, Raphael [1 ]
Mueller, Romek [1 ]
Isken, Philipp [1 ]
Lex-Balducci, Alexandra [1 ]
Schreiner, Christian [1 ]
Winter, Martin [1 ]
Cekic-Laskovic, Isidora [1 ]
Schmitz, Rene [1 ]
机构：
[1] Univ Munster, MEET Inst Phys Chem, D-48149 Munster, Germany
来源：
ELECTROCHIMICA ACTA | 2014年 / 125卷
关键词：
1,3,2-Dioxathiolane-2,2-dioxide; Solid electrolyte interphase; Graphite anode exfoliation; Propylene carbonate; Electrolyte safety; PC-BASED ELECTROLYTES; CHLOROETHYLENE CARBONATE; GRAPHITIC ANODES; ADDITIVES; CELLS; PERFORMANCE; ELECTRODES; ISOCYANATE; REDUCTION; SOLVENTS;
D O I：
10.1016/j.electacta.2014.01.023
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
1,3,2-Dioxathiolane-2,2-dioxide (DTD) was investigated as co-solvent for PC based electrolytes in combination with a graphite electrode. An amount of 10wt% of DTD in PC was used to form an effective and stable SEI on graphite during the first cycle. The decomposition of DTD takes place before PC cointercalation may happen, thus preventing the exfoliation of graphite. Additionally, the electrolyte, 1 M LiBF4 in PC:DTD (9:1, by wt.) was proven to be compatible with NCM electrodes. Raman spectra confirmed that LiBF4 completely dissociates into ions in PC:DTD (9:1, by wt.). The electrolyte shows better conductivities in comparison to other LiBF4 based electrolytes and good rate capability up to 5 C on graphite. Therefore, LiBF4 can be used as an alternative lithium salt in lithium-ion batteries, in combination with PC based electrolytes. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：101 / 106
页数：6
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