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Biomorphic Synthesis of Mesoporous Co3O4 Microtubules and Their Pseudocapacitive Performance
- Yan, Dongliang, Zhang, Huan, Chen, Lin, Zhu, Guisheng, Li, Shichao, Xu, Huarui, Yu, Aibing
- ACS Applied Materials & Interfaces 2014 v.6 no.18 pp. 15632-15637
- cobalt oxide, cost effectiveness, electrochemistry, electrodes, lint cotton, microtubules, nitrates, porous media, surface area
- A novel meosoporous tubular Co₃O₄ has been fabricated by a simple and cost-effective biomorphic synthesis route, which consists of infiltration of cotton fiber with cobalt nitrate solution and postcalcination at 673 K for 1 h. Its electrochemical performance as a supercapacitor electrode material is investigated by means of cyclic voltammetry and chronopotentiometry tests. Compared with bulk Co₃O₄ prepared without using cotton template, biomorphic Co₃O₄ displays 2.8 fold enhancement of pseudocapacitive performance because of the unique tubular morphology, relative high specific surface area (3 and 0.8 m²/g for biomorphic Co₃O₄ and bulk Co₃O₄, respectively), and mesoporous nature.