Electrochemical Properties of a TetraPEG-based Gel Electrolyte Containing a Nonflammable Fluorinated Alkyl Phosphate for Safer Lithium-ion Batteries

被引：14

作者：

Han, Jihae ^{[1
]}

Yoshitake, Mari ^{[1
]}

Sakai, Takamasa ^{[2
]}

Yoshimoto, Nobuko ^{[1
]}

Morita, Masayuki ^{[1
]}

Fujii, Kenta ^{[1
]}

机构：

[1] Yamaguchi Univ, Grad Sch Sci & Technol Innovat, 2-16-1 Tokiwadai, Ube, Yamaguchi 7558611, Japan

[2] Univ Tokyo, Sch Engn, Dept Bioengn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

来源：

CHEMISTRY LETTERS | 2018年 / 47卷 / 07期

基金：

日本学术振兴会;

关键词：

Polymer gels; Electrolytes; Li ion batteries; IDEAL POLYMER NETWORK; SECONDARY BATTERIES; GELATION MECHANISM; FLAME RETARDANTS; LOW-VISCOSITY; ARM POLYMERS; LIQUID; PERFORMANCE; HYDROGEL; LIFEPO4;

D O I：

10.1246/cl.180283

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a nonflammable gel electrolyte based on two key soft materials: 1) a homogeneous polymer network prepared from tetra-armed poly(ethylene glycol) (TetraPEG) and 2) a tris(2,2,2-trifluoroethyl) phosphate (TFEP)-based electrolyte solution. At the equilibrium swelling state, the concentration of the polymer in the TetraPEG gel was relatively low, at only 5.6 wt.%. The TetraPEG gel exhibits a wide electrochemical window of similar to 5.0V and thus works well as an electrolyte for a positive electrode, i.e., a lithium iron phosphate (LiFePO4).

引用

页码：909 / 912

页数：4

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