Why PEO as a binder or polymer coating increases capacity in the Li-S system

被引：105

作者：

Lacey, Matthew J. ^{[1
]}

Jeschull, Fabian ^{[1
]}

Edstrom, Kristina ^{[1
]}

Brandell, Daniel ^{[1
]}

机构：

[1] Uppsala Univ, Dept Chem, Angstrom Lab, SE-75121 Uppsala, Sweden

来源：

CHEMICAL COMMUNICATIONS | 2013年 / 49卷 / 76期

关键词：

LITHIUM-SULFUR BATTERIES; LIQUID ELECTROLYTE; PERFORMANCE; CATHODE; CELL; INTERLAYER; SOLVENT; ETHER;

D O I：

10.1039/c3cc44772c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

PEO, used either as a binder or a polymer coating, and PEGDME, used as an electrolyte additive, are shown to increase the reversible capacity of Li-S cells. The effect, in all three cases, is the same: an improved solvent system for the electrochemistry of sulfur species and suppression of cathode passivation on discharge. This constitutes a novel interpretation of the mechanistic behaviour of polyethers in the Li-S system, and sheds new light upon several previous studies.

引用

页码：8531 / 8533

页数：3

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