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Updated: Jun 16, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
Cross-linking enhances the performance of four-electron carbonylpyridinium based polymers for lithium organic
Hongyan Li1, Ling Chen1, Fangfang Xing1
1Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710119 P.R. China xmhe@snnu.edu.cn.
Abstract:
Design and integration of multiple redox-active organic scaffolds into tailored polymer structures to enhance the specific capacity and cycling life is a long-term research goal. Inspired by nature, we designed and incorporated a 4-electron accepting dicarbonylpyridinium redox motif into linear (DBMP) and cross-linked polymer (TBMP) structures. Benefiting from the suppressed solubility and higher electronic conductivity, the cross-linked TBMP based electrode exhibits improved cycling stability and higher specific capacity than the linear counterpart. After 4000 cycles at 1 A g-1, TBMP can maintain a high capacity of 252 mA h g-1, surpassing the performance of many reported organic cathodes. The structural evolution and reaction kinetics during charge and discharge have been investigated in detail. This study demonstrates that cross-linking is an effective strategy to push the bio-derived carbonylpyridinium materials for high performance LOBs.
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