POSS based electrolytes for rechargeable lithium batteries

被引：36

作者：

Maitra, P ^{[1
]}

Wunder, SL ^{[1
]}

机构：

[1] Temple Univ, Dept Chem, Philadelphia, PA 19122 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 04期

关键词：

D O I：

10.1149/1.1646832

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A class of electrolytes based on polyethylene oxide (PEO)-functionalized polyhedral oligosilsesquioxanes [Q(8)M(8)(PEO(n)) or PEO(n)POSS] and lithium salts was developed, where n = 2, 4, (8), [12.5] ethylene oxide units. Conductivities (sigma) of these highly branched, nonvolatile (375 degreesC), viscous polymers (M-w - 3000- 5000 g/mol) were >10(-3) S/cm at 50 degreesC and >10(-4) S/cm (LiClO4) at room temperature (RT), comparable to conductivities of oligomeric PEOs (M-w = 300-500). The T-g values of Q(8)M(8)(PEO(n=2,4,(8)))/LiClO4 were between -60 and -70degreesC, so that sigma at -20 degreesC approached 10(-6) S/cm. Strong self-supporting films (tensile strength 3.7 MPa) from 10% methyl cellulose and 90% Q(8)M(8)(PEO(n=(8)))/ LiClO4 had RT conductivities >10(-5) S/cm. (C) 2004 The Electrochemical Society.

引用

页码：A88 / A92

页数：5

共 56 条

[1] Inorganic-organic composite solid polymer electrolytes [J].