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Multi-redox phenazine/non-oxidized graphene/cellulose nanohybrids as ultrathick cathodes for high-energy organic batteries
Cited 22 time in
Web of Science
Cited 25 time in Scopus
- Authors
- Issue Date
- 2021-05
- Publisher
- Tsinghua Univ Press
- Citation
- Nano Research, Vol.14 No.5, pp.1382-1389
- Abstract
- Various redox-active organic molecules can serve as ideal electrode materials to realize sustainable energy storage systems. Yet, to be more appropriate for practical use, considerable architectural engineering of an ultrathick, high-loaded organic electrode with reliable electrochemical performance is of crucial importance. Here, by utilizing the synergetic effect of the non-covalent functionalization of highly conductive non-oxidized graphene flakes (NOGFs) and introduction of mechanically robust cellulose nanofiber (CNF)-intermingled structure, a very thick (approximate to 1 mm), freestanding organic nanohybrid electrode which ensures the superiority in cycle stability and areal capacity is reported. The well-developed ion/electron pathways throughout the entire thickness and the enhanced kinetics of electrochemical reactions in the ultrathick 5,10-dihydro-5,10-dimethylphenazine/NOGF/CNF (DMPZ-NC) cathodes lead to the high areal energy of 9.4 mWh center dot cm(-2) (= 864 Wh center dot kg(-1) at 158 W center dot kg(-1)). This novel ultrathick electrode architecture provides a general platform for the development of the high-performance organic battery electrodes.
- ISSN
- 1998-0124
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