期刊
JOURNAL OF POWER SOURCES
卷 97-8, 期 -, 页码 621-623出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0378-7753(01)00642-5
关键词
block copolymer; lithium batteries; transference number; single-ion conductor
In an attempt to raise the transference number of Li+ to nearly unity in a solid polymer electrolyte, block copolymer materials have been prepared in which the counterions are tethered to the polymer backbone. This immobilizes the anion and, in effect, renders the material a single-ion conductor. For such so-called self-doped block copolymer electrolytes (SDBCEs) Li+ transference numbers of similar to0.9 have been measured. In parallel, these materials possess significant ionic conductivity (similar to 10(-5) S cm(-1) at 35 degreesC). Cyclic voltammetry has shown the SDBCE to be immune to electrochemical breakdown at voltages exceeding 5 V. (C) 2001 Elsevier Science B.V. All rights reserved.
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