文章摘要
甲壳素纳米纤维/碳纳米管复合凝胶膜的制备与性能
Synthesis and Characterization of Chitin Nanofiber/Carbon Nanotube Gel-Films
  
DOI:10.16865/j.cnki.1000-7555.2018.08.026
中文关键词: 甲壳素纳米纤维  碳纳米管  凝胶化  纳米网络结构  电化学性能
英文关键词: chitin nanofiber  carbon nanotube  gelation treatment  nano-network structure  electrochemical properties
基金项目:江苏省自然科学基金资助项目(BK20170925);国家自然科学基金资助项目(31670555);南京林业大学青年科技创新基金(CX2017001);江苏省大学生创新训练项目(SPITP201710298071Y) ;江苏高校优势学科建设工程(PAPD)
作者单位
陈楚楚, 邓淑文, 刘育绮, 周 沛, 赵启蕊, 唐雁玲, 李大纲 南京林业大学 材料科学与工程学院江苏 南京 210037 
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中文摘要:
      将甲壳素纳米纤维与碳纳米管在水性条件下混合,建立甲壳素纳米纤维均匀分散的碳纳米管混合体系;利用真空抽滤制备甲壳素纳米纤维/碳纳米管复合膜,通过20%氢氧化钠低温处理制备具有连续三维纳米网络结构的复合凝胶膜,并对比凝胶化前后样品微观结构、导电性能及电化学性能等。结果表明,凝胶化处理有助于在凝胶膜内部构建三维纳米导电网络,当甲壳素纳米纤维与碳纳米管的质量比为1∶1时,凝胶膜的导电率和质量比电容较复合膜提高了2倍;2000次循环测试后,凝胶膜的比电容量仍能保持为起始比电容量的92.5%,循环稳定性较好。
英文摘要:
      Chitin nanofiber (ChNF) and carbon nanotube (CNT) were mixed in water system to prepare well-dispersed ChNF/CNT solutions. By vacuum filtration, ChNF/CNT film was fabricated. After immersed into 20% sodium hydroxide (NaOH) solutions, ChNF/CNT gel-film was obtained showing three-dimensional nano-network structures. The microstructure, electronic conductivity and electrochemical properties of the ChNF/CNT film and ChNF/CNT gel-film were characterized, respectively. The results show that the gelation treatments facilitate the construction of three-dimensional nano-networks in the gel-films. When the mass ratio of ChNF and CNT is 1:1, electronic conductivity and capacitance of the ChNF/CNT gel-film are increased by 2 times than that of ChNF/CNT film. Furthermore, after 2000 cycle stability test, the capacity of the ChNF/CNT gel-film is maintained at 92.5% of the original capacity, which exhibits good cyclic stability.
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