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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)。 |
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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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