Electrospun porous carbon nanofibers derived from bio-based phenolic resins as free-standing electrodes for high-performance supercapacitors  

作　　者：Yongsheng Zhang Xiaomeng Yang Jinpan Bao Hang Qian Dong Sui Jianshe Wang Chunbao Charles Xu Yanfang Huang 

机构地区：[1]School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China [2]School of Chemistry and Chemical Engineering,Luoyang Normal University,Luoyang 471934,China [3]Department of Chemical and Biochemical Engineering,Western University,London,N6A 3K7,Canada

出　　处：《Frontiers of Chemical Science and Engineering》2023年第5期504-515,共12页化学科学与工程前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.21908204,52074244);the Henan Provincial Key Research and Development Program(Grant No.192102310202).

摘　　要：Phenolic resins were employed to prepare electrospun porous carbon nanofibers with a high specific surface area as free-standing electrodes for high-performance supercapacitors.However,the sustainable development of conventional phenolic resin has been challenged by petroleum-based phenol and formaldehyde.Lignin with abundant phenolic hydroxyl groups is the main non-petroleum resource that can provide renewable aromatic compounds.Hence,lignin,phenol,and furfural were used to synthesize bio-based phenolic resins,and the activated carbon nanofibers were obtained by electrospinning and one-step carbonization activation.Fourier transform infrared and differential scanning calorimetry were used to characterize the structural and thermal properties.The results reveal that the apparent activation energy of the curing reaction is 89.21 kJ·mol–1 and the reaction order is 0.78.The activated carbon nanofibers show a uniform diameter,specific surface area up to 1100 m^(2)·g^(-1),and total pore volume of 0.62 cm^(3)·g^(-1).The electrode demonstrates a specific capacitance of 238 F·g^(-1)(0.1 A·g^(-1))and good rate capability.The symmetric supercapacitor yields a high energy density of 26.39 W·h·kg^(-1)at 100 W·kg^(-1)and an excellent capacitance retention of 98%after 10000 cycles.These results confirm that the activated carbon nanofiber from bio-based phenolic resins can be applied as electrode material for high-performance supercapacitors.

关 键 词：LIGNIN bio-based phenolic resins electrospinning activated carbon nanofibers SUPERCAPACITORS 

分 类 号：O62[理学—有机化学]