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Preparation and Performance of Lignocellulose Based Carbon Material for Supercapacitor
Received:May 19, 2021  
DOI：10.11980/j.issn.0254-508X.2021.10.002
Key Words:lignocellulose  activation  carbon material  supercapacitor  electrochemical performance
Fund Project:制浆造纸工程国家重点实验室开放基金项目（201823）。
Author NameAffiliationPostcode
REN Xiaoli Tianjin Key Lab of Pulp and Paper， Tianjin University of Science & Technology， Tianjin， 300457 300457
LIU Xiuzhi 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:In this study， potassium hydroxide （KOH） was used as activator to prepare lignocellulose-based carbon materials with different structures via two different processing methods. One was first pre-carbonization and then activation， and the other was first activation and then carbonization. The porous carbon material synthesized by the former method was rich in defects and the specific surface area reached 1737 m2/g. Due to its special structure-activity relationship， the obtained porous carbon material as a supercapacitor electrode exhibited excellent electrochemical performance with a specific capacity of 194 F/g at a current density of 0.5 A/g.
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