Biomorphic synthesis of mesoporous Co₃O₄ microtubules and their pseudocapacitive performance
Dongliang Yan1, Huan Zhang, Lin Chen
1Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology , Guilin 541004, P.R. China.
Abstract:
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 m(2)/g for biomorphic Co3O4 and bulk Co3O4, respectively), and mesoporous nature.
