Phase Behavior and Thermal Properties of Ternary Ionic Liquid-Lithium Salt (IL-IL-LiX) Electrolytes

被引：52

作者：

Zhou, Qian ^{[1
]}

Henderson, Wesley A. ^{[1
]}

Appetecchi, Giovanni B. ^{[2
]}

Passerini, Stefano ^{[2
,3
]}

机构：

[1] N Carolina State Univ, Dept Chem & Biomol Engn, ILEET Lab, Raleigh, NC 27695 USA

[2] IDROCOMB, Italian Natl Agcy New Technol Energy & Sustainabl, ENEA, I-00123 Rome, Italy

[3] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 13期

关键词：

ELECTROCHEMICAL PROPERTIES; POLYMER ELECTROLYTES; ROOM-TEMPERATURE; STABILITY; BATTERIES; EFFICIENCY; INSERTION; GRAPHITE; BASE;

D O I：

10.1021/jp911759d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phase behavior and thermal properties of ternary ionic liquid lithium salt (IL-IL-LiX) mixtures intended for use as electrolytes for lithium batteries are reported here. It is shown that the addition of small amounts of N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide (PY13FSI) to N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PY14TFSI)-lithium salt (LiTFSI or LiPF6) mixtures greatly hinders the ability of the samples to crystallize. This results in a much improved subambient temperature conductivity for the mixtures relative to the binary IL-LiX electrolytes at low temperature. The thermal stability of the mixtures is reduced by the addition of PY13FSI but remains acceptable for Li battery applications.

引用

页码：6201 / 6204

页数：4

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