A high-capacity carbon prepared from renewable chicken feather biopolymer for supercapacitors

JOURNAL OF POWER SOURCES

卷:225

Article

Wang, Qiang¹  Cao, Qi¹  Wang, Xianyou¹  Jing, Bo¹  Kuang, Hao¹  Zhou, Ling¹ 

[1] Xiangtan Univ, Coll Chem, Key Lab Environm Friendly Chem & Applicat Ministe, Xiangtan 411105, Peoples R China

关键词: Supercapacitor;    Activated carbon;    Chicken feather;    Electrode material;   

DOI  :  10.1016/j.jpowsour.2012.10.022

来源: Elsevier

【 摘 要 】

Micropopous chicken feather carbon (CFC) severing as electrode materials for the first time is prepared via the activation with KOH agent to different extents. The structure and electrochemical properties of CFC materials are characterized with N-2 adsorption/desorption measurements, X-ray diffraction (XRD), transmission electron microscope (TEM), cyclic voltammetry (CV), galvanostatic charge/discharge cycling and electrochemical impedance spectroscopy (EIS). The obtained results show that CFC activated by KOH with KOH/CFC weight ratio of 4/1 (CFCA4) possesses the specific surface area of 1839 m(2) g(-1), average micropore diameter of 1.863 nm, and exhibits the highest initial specific capacitance of 302 F g(-1) at current density of 1 A g(-1) in 1 M H2SO4, and that even after 5000 cycles, CFCA4 specific capacitance is still as high as 253 F g(-1). Furthermore, CFCA4 also delivers specific capacitance of 181 F g(-1) at current density of 5 A g(-1) and 168 F g(-1) at current density of 10 A g(-1). Accordingly, the microporous activated carbon material derived from chicken feather provides favorable prospect in electrode materials application in supercapacitors. (C) 2012 Elsevier B.V. All rights reserved.

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