MnO 2  Thin Films on 3D Scaffold: Microsupercapacitor Electrodes Competing with “Bulk” Carbon Electrodes | Zendy

Eustache Etienne | Zendy; Douard Camille | Zendy; Retoux Richard | Zendy; Lethien Christophe | Zendy; Brousse Thierry | Zendy

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MnO 2 Thin Films on 3D Scaffold: Microsupercapacitor Electrodes Competing with “Bulk” Carbon Electrodes

Author(s) -

Eustache Etienne,

Douard Camille,

Retoux Richard,

Lethien Christophe,

Brousse Thierry

Publication year - 2015

Publication title -

advanced energy materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.08

H-Index - 220

eISSN - 1614-6840

pISSN - 1614-6832

DOI - 10.1002/aenm.201500680

Subject(s) - electrode , materials science , carbon fibers , scaffold , thin film , optoelectronics , nanotechnology , composite material , chemistry , biomedical engineering , composite number , engineering

A simple, binder‐free fabrication of high capacitance electrodes based on manganese dioxide (MnO 2 ) thin films is reported. The 3D structure of these electrodes significantly improves the areal capacitance of the MnO 2 thin films up to 670 mF cm −2 in aqueous electrolyte, which is 4.5 times higher than the best reported capacitance of 3D electrodes thus far. This capacitance is on the same order of magnitude as that of a bulk carbon electrode. Moreover, the 3D MnO 2 ‐based electrode exhibits a stable cycling behavior for more than 15 000 cycles.

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