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Biotemplate-assisted hydrothermal synthesis of tubular porous Co^sub 3^O^sub 4^ with excellent charge-discharge cycle stability for supercapacitive electrodes

Tubular porous Co3O4 were hydrothermally synthesized at 120 °C and post-calcined at 500 °C using sorghum straw as biotemplate. The as-obtained porous Co3O4 inherited the morphology and microstructure of sorghum straw. Compared with the bare Co3O4, the tubular porous Co3O4 exhibited 5-fold enhancemen...

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Bibliographic Details
Published in:Materials letters 2018-01, Vol.210, p.231
Main Authors: Liu, Yan, Lv, Bingjie, Li, Peipei, Chen, Yilin, Gao, Bifen, Lin, Bizhou
Format: Article
Language:English
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Summary:Tubular porous Co3O4 were hydrothermally synthesized at 120 °C and post-calcined at 500 °C using sorghum straw as biotemplate. The as-obtained porous Co3O4 inherited the morphology and microstructure of sorghum straw. Compared with the bare Co3O4, the tubular porous Co3O4 exhibited 5-fold enhancement in specific capacitance and excellent charge-discharge cycle stability with the capacitance retention of 90.1% after 9000 cycles at a current density of 2 A/g, attributed to its enhanced specific surface area, more surface electroactive sites and unique microstructure.
ISSN:0167-577X
1873-4979