Electrochemical properties of carbon aerogels with freeze - drying

2017 2nd International Seminar on Advances in Materials Science and Engineering

Xu, Yuelong^1,2 ; Yan, Meifang^1,2,3 ; Liua, Zhenfa^1

Institute of Energy Resources, Hebei Academy of Sciences, Shijiazhuang

050081, China^1

Hebei Engineering Research Center for Water Saving in Industry, Shijiazhuang

050081, China^2

Institute of Process Engineering, Chinese Academy of Sciences, Beijing

100190, China^3

关键词: Carbon aerogels;    Freeze drying;    Galvanostatic charge discharges;    Phloroglucinol;    Specific capacitance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012095/pdf
DOI  :  10.1088/1757-899X/231/1/012095

来源: IOP

【 摘 要 】

Carbon aerogels (CAs) were prepared via a sol-gel process by polymerization of phloroglucinol, resorcinol and formaldehyde using 2,4-dihydroxybenzoic acid as catalyst with freeze-drying. The electrochemical properties were characterized using cyclic voltammetry, galvanostatic charge-discharge measurements and electrochemical impedance spectroscopy (EIS). The specific capacitance of corresponding CAs was up to 131 F g-1 and 105 F g-1 at the density of 0.5 A g-1 and 1.0 A g-1, respectively.