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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

纳米碳管电极成型工艺对其电吸附脱盐性能影响的研究

张登松1,2, 施利毅1,2,3, 方建慧1,2,3, 代凯1, 张礼颖1   

  1. 1. 上海大学材料科学与工程学院; 2. 上海大学理学院; 3. 上海大学纳米科学技术研究中心, 上海 200444
  • 收稿日期:2004-12-06 修回日期:2005-01-06 出版日期:2006-01-20 网络出版日期:2006-01-20

Effect of Moulding Techniques on Electro-adsorption Desalination of Carbon Nanotube Electrodes

ZHANG Deng-Song1,2, SHI Li-Yi1,2,3, FANG Jian-Hui1,2,3, DAI Kai1, ZHANG Li-Ying1   

  1. 1. School of Material Science and Engineering, Shanghai University, Shanghai 200444, China; 2. College of Science, Shanghai University, Shanghai 2000444, Chine; 3.
    Research Center of Nanoscience and Nanotechnology of Shanghai University, Shanghai 200444, China
  • Received:2004-12-06 Revised:2005-01-06 Published:2006-01-20 Online:2006-01-20

PDF (PC)

1352

被引次数

22

摘要： 添加不同种类和含量的粘结剂, 通过冷压和热压方法, 结合炭化处理等不同工艺制备纳米碳管电极, 利用DC-5电池测试仪分析其在盐水中的充放电性能, 比较其电吸附比电容和等效电
阻, 发现当聚四氟乙烯(PTFE)的量为10%, 聚偏氟二乙烯(PVDF)的量为15%时, 电极可以冷压成型; 酚醛树脂(PR)的量为20%时, 电极可以热压成型, 随着粘结剂的增加, 电极在盐水中的电吸
附比电容降低, 等效电阻增大. 通过纳米碳管电极表面结构、形貌、亲水性及在盐水中电吸附电容和等效电阻的分析, 对其脱盐性能进行比较, 发现添加20%PR粘结剂热压成型电极经
炭化后, 其比表面积大, 内部孔隙丰富, 亲水性好, 在盐水中电吸附比电容大, 等效电阻小, 电吸附脱盐效果最为显著.

关键词: 纳米碳管, 电极, 成型, 脱盐

Abstract: The carbon nanotube electrodes with different kinds and quantities of binders, using methods such as press molding at room-temperature and hot-press molding combined with carbonization, were
moulded. The charge-discharge tests of the electrodes were performed in saltwater by the DC-5 battery testing instrument, and the specific electro-adsorption capacitance and equivalent resistance
were compared. The results are as follows: the electrodes can be molded at room-temperature with 10% polytetrafluoroethylene (PTFE) or 15% polyvinylidene fluoride (PVDF) and at high temperature
with 20% phenolic resin (PR), and the specific electro-adsorption capacitance decreases and the equivalent resistance increases with the increasing content of the binders. The surface structure,
morphology, specific electro-adsorption capacitance, equivalent resistance and hydrophilicity of the electrodes were investigated, and the electro-adsorption desalination performances were compared.
The results show that the electrode hot-pressed with 20% PR, after carbonization, with high specific surface area, many pores, good hydrophilicity, high specific electro-adsorption capacitance and low
equivalent resistance, has the best electro-adsorption desalination performance.

Key words: carbon nanotubes, electrode, moulding, desalination

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