Facile Synthesis of Co₃O₄/Nitrogen-Doped Graphene Composite and their Electrochemical Performances

Abstract:

Co₃O₄/Nitrogen-doped graphene (Co₃O₄/NG) composites were synthesized by a simple hydrothermal method. The Co₃O₄/NG composites show a better electrochemical performance than the Co₃O₄/graphene (Co₃O₄/G) composite. The specific capacitance of Co₃O₄/NG electrode is 428 F/g (290 F/g for Co₃O₄/G electrode) at a current density of 1 A/g. As the current density was increased from 1 to 8 A/g, the capacitance of Co₃O₄/NG still retained 57%, significantly larger than that of Co₃O₄/G (40%). Moreover, over 94% of the original capacitance was maintained after 500 cycles (72% for Co₃O₄/G electrode), indicating a good cycle stability of Co₃O₄/NG electrode materials.

• Periodical: Advanced Materials Research (Volumes 1120-1121)
• Pages: 347-351
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.347
• Online since: July 2015
• Authors: Wen Xiao Bao, Qian Long Zhou, Tian Yu Zhang, Wei Long Li, Zhao Yu Ren*
• Keywords: Co₃O₄ Nanoparticles, Nitrogen-Doped Graphene, Supercapacitors

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