Title: Solution–Processable Thermally Crosslinked Organic Radical Polymer Battery Cathodes

Journal Article · · ChemSusChem
 [1];  [2];  [3];  [3];  [3];  [3];  [2]; ORCiD logo [3]
  1. Texas A & M Univ., College Station, TX (United States); Texas A&M University
  2. Cornell Univ., Ithaca, NY (United States)
  3. Texas A & M Univ., College Station, TX (United States)

Organic radical polymers are promising cathode materials for next-generation batteries because of their rapid charge transfer and high cycling stability. However, these organic polymer electrodes gradually dissolve in the electrolyte, resulting in capacity fade. Several crosslinking methods have been developed to improve the performance of these electrodes, but they are either not compatible with carbon additives or compromise the solution processability of the electrodes. A one-step post-synthetic, carbon-compatible crosslinking method was developed to effectively crosslink an organic polymer electrode and allow for easy solution processing. The highest electrode capacity of 104 mAh g–1 (vs. a theoretical capacity of 111 mAh g–1) is achieved by introducing 1 mol % of the crosslinker, whereas the highest capacity retention (99.6 %) is obtained with 3 mol % crosslinker. In addition, mass transfer was observed in situ by using electrochemical quartz crystal microbalance with dissipation monitoring. Furthermore, these results may guide future electrode design toward fast-charging and high-capacity organic electrodes.

Research Organization:
Texas A & M Univ., College Station, TX (United States); Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012245; SC0014006
OSTI ID:
1831149
Journal Information:
ChemSusChem, Journal Name: ChemSusChem Journal Issue: 9 Vol. 13; ISSN 1864-5631
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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