Open AccessCarbon Aerogels With Kaolin Addition For Supercapacitors Application
Author(s) -
Yuelong Xu,
Bin Ren,
Shasha Wang,
Zhenfa Liu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/565/1/012085
Subject(s) - supercapacitor , dielectric spectroscopy , x ray photoelectron spectroscopy , cyclic voltammetry , capacitance , resorcinol , electrochemistry , materials science , carbon fibers , chemical engineering , ascorbic acid , current density , analytical chemistry (journal) , electrode , chemistry , organic chemistry , composite material , physics , food science , quantum mechanics , composite number , engineering
Carbon aerogels with excellent electrochemical properties and 3D porous structure are prepared from the reaction of phloroglucinol (P), resorcinol (R) and formaldehyde (F) under ascorbic acid (VC) catalyzing with kaolin (KL) addition. Because of the double-layer capacitance behavior, CAs have been used as supercapacitors for energy storage. The reaction mechanism of the wet aerogels formation is analyzed. Meanwhile, the chemical environments of CAs surface is systematically investigated using X-ray photoelectron spectroscopy (XPS). The cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) measurements and electrochemical impedance spectroscopy (EIS) are adopted to studied the excellent electrochemical properties of different samples. The specific capacitance (SC) is up to 162 F g −1 , and 97% of initial capacitance is retained over 1000 cycles at a current density of 1.0 A g −1 .