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Study on the Preparation of Poplar Wood-based Porous Carbon via Dual Mild Activation Method and Its Electrochemical Performance
Received:August 14, 2021  
DOI：10.11980/j.issn.0254-508X.2022.02.002
Key Words:activation  poplar wood  electrode materials  supercapacitor  porous carbon  electrochemical performance
Fund Project:制浆造纸工程国家重点实验室开放基金（201823）。
Author NameAffiliationPostcode
JIANG Tongbao Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
ZHANG Wenwen Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
WU Kaili Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
CHEN Yunjing Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
YANG Zhenhu Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
LIU Wei Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
HOU Qingxi* Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457
State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 		510640
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Abstract:Poplar wood-based porous carbon was prepared as supercapacitor electrode material by dual mild activation method of autohydrolysis pretreatment （AP） combined with enzymatic hydrolysis （EH）. The effect of EH assisted by AP on the electrochemical properties of poplar wood-based porous carbon was explored. The results showed that the simple enzymatic hydrolysis could only produce a few pores in the cavity of the pits， which limited the effect on improving the resultant electrochemical performance. When EH was assisted by AP and the mass ratio of cellulase to poplar wood was 0.05∶1， the mass specific capacitance of the poplar wood-based porous carbon could reach 149.70 F/g at a current density of 0.1 A/g. The capacitance retention rate was still as high as 94.0% after 5000 cycles at a high current density of 2 A/g.
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