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- W2917177455 abstract "Natural diatomite with abundant pores was used as a biotemplate for the massive production of three-dimensional (3D) porous graphene by chemical vapor deposition method. Subsequent template removal and nitrogen doping treatment yield nitrogen doped 3D graphene with preserved shape and complex internal features of the diatomite. After further deposition with MnO2 nanosheets, the N-doped 3D [email protected]2 ([email protected]2) hybrid exhibited excellent supercapacitor and good oxygen reduction reaction (ORR) performance. Accordingly, the porous [email protected]2 electrode exhibited a high specific capacitance (411.5 F g−1) and a good cycling performance (88.3% capacitance retention after 4000 charge/discharge cycling test). When tested in a two-electrode configuration, [email protected]2 achieved a wide potential window up to 1.8 V with a high energy density of 46.1 Wh kg−1. Furthermore, the as-prepared [email protected]2 showed good performance in oxygen reduction reaction, which is comparable to those of commercially available Pt/C electrode. The enhanced capacitive and electrocatalytic properties and stability is due to the synergistic interactions between the porous 3D graphene and MnO2 nanosheets. The results indicate that the 3D [email protected]2 could be useful for supercapacitor and ORR catalyst." @default.
- W2917177455 created "2019-03-02" @default.
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- W2917177455 date "2019-05-01" @default.
- W2917177455 modified "2023-10-16" @default.
- W2917177455 title "Biotemplate derived three dimensional nitrogen doped graphene@MnO2 as bifunctional material for supercapacitor and oxygen reduction reaction catalyst" @default.
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- W2917177455 doi "https://doi.org/10.1016/j.jcis.2019.02.089" @default.
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