Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 155, Issue 10, Pages A721-A724Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.2956964
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Funding
- NSERC
- 3M Canada Co
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The use of lithium-exchanged Nafion as a polymer binder for alloy negative electrodes in lithium-ion batteries is demonstrated. Commercial Nafion solution was ion exchanged with LiOH in order to remove the mobile protons and prepare the lithium-containing polymer. The resulting Li-Nafion solution, crystalline silicon, and carbon black were used to prepare composite electrodes having final proportions of 8% binder, 80% silicon, and 12% carbon by weight, respectively. The prepared electrodes gave reversible specific capacities ranging from 800 to nearly 1000 mAh/g when cycled between 0.9 and 0.17 V. The capacity retention of the investigated electrode samples was very good, suggesting that lithium-exchanged Nafion is a promising binder for alloy negative electrodes of Li-ion batteries. (C) 2008 The Electrochemical Society.
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