栾云浩,曹慧,贾凌云,刘文丽,刘鹏涛.用于超级电容器电极材料的CNCs/PVA/RGO/PPy复合气凝胶[J].中国造纸学报,2023,38(3):18-23 本文二维码信息
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用于超级电容器电极材料的CNCs/PVA/RGO/PPy复合气凝胶
CNCs/PVA/RGO/PPy Composite Aerogel for Electrode Materials of Supercapacitors
投稿时间:2022-03-07  
DOI:10.11981/j.issn.1000-6842.2023.03.18
中文关键词:  纤维素纳米晶  聚乙烯醇  还原氧化石墨烯  聚吡咯  储能材料  复合气凝胶
Key Words:cellulose nanocrystals  polyvinyl alcohol  reduced graphene oxide  polypyrrole  energy storage materials  composite aerogel
基金项目:国家重点研发计划重点专项资助项目(2017YFB0307901)。
作者单位邮编
栾云浩* 天津科技大学天津市制浆造纸重点实验室天津300457 300457
曹慧 天津科技大学天津市制浆造纸重点实验室天津300457 300457
贾凌云 天津科技大学天津市制浆造纸重点实验室天津300457 300457
刘文丽 天津科技大学天津市制浆造纸重点实验室天津300457 300457
刘鹏涛 天津科技大学天津市制浆造纸重点实验室天津300457 300457
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中文摘要:
      本研究以聚乙烯醇(PVA)与纤维素纳米晶(CNCs)共混形成网络结构,并引入了氧化石墨烯(GO)和聚吡咯(PPy),通过原位聚合法将PPy均匀沉积在复合材料表面,并以冻融循环法和冷冻干燥法制备复合气凝胶,最终用还原剂将复合材料中的GO还原为还原氧化石墨烯(RGO),制备了导电性良好的CNCs/PVA/RGO/PPy复合气凝胶。通过结构及电化学性能表征分析,表明该复合气凝胶有着良好的多孔网状结构以及优异的电化学性能(在电流密度为0.25 mA/cm2时,比电容量约为352 F/g),该复合气凝胶在超级电容器电极材料领域具有很好的应用前景。
Abstract:
      In this study, polyvinyl alcohol (PVA) and cellulose nanocrystals (CNCs) were blended to form a network structure, and graphene oxide (GO) and polypyrrole (PPy) were introduced. Py was uniformly deposited on the surface of the composites by in-situ polymerization and composite aerogels were prepared by freeze-thaw cycle and freeze drying method. The Go in the composite was reduced to reduced graphene oxide (RGO) with reducing agent, and the CNCs/PVA/RGO/PPy composite aerogel with good electrical conductivity was prepared. Through the characterization and analysis of structure and electrochemical performance, the results showed that the composite aerogel has good porous network structure and excellent electrochemical performance (the specific capacity was about 352 F/g when the current density was 0.25 mA/cm2). The composite has a good application prospect in the field of electrode materials.
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