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Phenothiazine-Functionalized Poly(norbornene)s as High-Rate Cathode Materials for Organic Batteries.

ABSTRACT: Organic cathode materials are handled as promising candidates for new energy-storage solutions based on their transition-metal-free composition. Phenothiazine-based polymers are attractive owing to their redox potential of 3.5?V vs. Li/Li⁺ and high cycling stabilities. Herein, three types of poly(norbornene)s were investigated, functionalized with phenothiazine units through either a direct connection or ester linkages, as well as their crosslinked derivatives. The directly linked poly(3-norbornylphenothiazine)s demonstrated excellent rate capability and cycling stability with a capacity retention of 73?% after 10?000 cycles at a C-rate of 100?C for the crosslinked polymer. The polymer network structure of the crosslinked poly(3-norbornylphenothiazine) was beneficial for its rate performance.

SUBMITTER: Otteny F

PROVIDER: S-EPMC7317714 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Phenothiazine-Functionalized Poly(norbornene)s as High-Rate Cathode Materials for Organic Batteries.

Otteny Fabian F Studer Gauthier G Kolek Martin M Bieker Peter P Winter Martin M Esser Birgit B

ChemSusChem 20200128 9

Organic cathode materials are handled as promising candidates for new energy-storage solutions based on their transition-metal-free composition. Phenothiazine-based polymers are attractive owing to their redox potential of 3.5 V vs. Li/Li<sup>+</sup> and high cycling stabilities. Herein, three types of poly(norbornene)s were investigated, functionalized with phenothiazine units through either a direct connection or ester linkages, as well as their crosslinked derivatives. The directly linked pol ...[more]

PMID: 31851423

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