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Electrochemical Properties of Black Liquor Al-precipitated Lignin@PAN-based Carbon Fiber Electrode Materials and Its Application in Supercapacitor
Received:March 08, 2022  
DOI：10.11980/j.issn.0254-508X.2022.10.001
Key Words:bamboo pulp black liquor  high molecular weight lignin  co-precipitated silicon removal  carbon fiber  supercapacitor
Fund Project:国家自然科学基金项目（21978161）；陕西科技大学学术带头人团队项目（2013XSD25）。
Author NameAffiliationPostcode
CHEN Shenglin* College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 710021
XU Yongjian College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 710021
GUO Kangkang College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 710021
LIU Yan College of Bioresources Chemical and Materials Engineering， Shaanxi University of Science & Technology， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper， Xi’an， Shaanxi Province， 710021 710021
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Abstract:In this study， high molecular weight lignin in the bamboo pulp black liquor was separated via colloidal precipitation by aluminum sulfate to obtain the Al-precipitated lignin （AlpL）， and then AlpL@PAN-based carbon fibers with good electrochemical properties were prepared by electrospinning， pre-oxidation and carbonization route with AlpL and polyacrylonitrile （PAN） as raw materials. When the AlpL proportion was up to 60%， AlpL@PAN-based carbon fibers showed the best capacitance performance and better cycle stability， of which the internal resistance value was 1.138 Ω with 94.50% of the capacitance retained after 1000 cycles.
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