Biomorphic Synthesis of Mesoporous Co3O4 Microtubules and Their Pseudocapacitive Performance

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• 作者：Dongliang Yan ; Huan Zhang ; Lin Chen ; Guisheng Zhu ; Shichao Li ; Huarui Xu ; Aibing Yu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2014
• 出版时间：September 24, 2014
• 年：2014
• 卷：6
• 期：18
• 页码：15632-15637
• 全文大小：384K
• ISSN：1944-8252

文摘

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.

Keywords:

biomorphic; energy storage and conversion; mesoporous; pseudocapacitive performance