摘要
采用硫酸铝胶体沉淀分离竹浆黑液高分子质量木质素,得到铝沉木质素(AlpL),以AlpL和聚丙烯腈(PAN)为原料,采用静电纺丝法-预氧化-碳化路线,制备了电化学性能良好的AlpL@PAN基碳纤维并研究其作为超级电容器电极材料的电化学性能。当AlpL占比为60%时,AlpL@PAN基碳纤维表现出最好的电容性能和较好的循环稳定性;其内部电阻值达1.138Ω,循环1000次后仍能保留94.50%的电容。
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 1.138Ωwith 94.50%of the capacitance retained after 1000 cycles.
作者
陈盛林
徐永建
郭康康
刘燕
CHEN Shenglin;XU Yongjian;GUO Kangkang;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)
出处
《中国造纸》
CAS
北大核心
2022年第10期1-7,共7页
China Pulp & Paper
基金
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)。
关键词
竹浆黑液
高分子质量木质素
共沉除硅
碳纤维
超级电容器
bamboo pulp black liquor
high molecular weight lignin
co-precipitated silicon removal
carbon fiber
supercapacitor
