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, TBMP can maintain a high capacity of 252 mA h g, 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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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11331337 | PMC |
| http://dx.doi.org/10.1039/d4sc04179h | DOI Listing |
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