Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1287030 | Journal of Power Sources | 2006 | 5 Pages |
Abstract
An electroactive polytriphenylamine (PTPAn) was synthesized and used as separator material for providing a self-activating overcharge protection of rechargeable lithium batteries. The experimental results from the Li–LiFePO4 cells demonstrated that the electroactive separator could transform from an electronically isolating state to a conductive state at overcharge, producing an resistive internal short circuit to maintain the cell's voltage at the safety value of ∼3.75 V. In addition, the electroactive PTPAn separator works reversibly and has no negative influences on the normal charge–discharge behaviors of the Li–LiFePO4 cells.
Related Topics
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Electrochemistry
Authors
J.K. Feng, X.P. Ai, Y.L. Cao, H.X. Yang,