碳纤维基PtPb阳极催化剂的制备及其电催化性能

李志扬; 袁善美; 朱昱; 倪红军

碳纤维基PtPb阳极催化剂的制备及其电催化性能

南通大学机械工程学院, 江苏南通 226019

基金项目: 国家科技支撑计划（2011BAG02B10）；江苏高校优势学科建设工程资助项目、江苏高校科研成果产业化推进项目（JHB2012-45）；南通市应用研究计划（BK2011029）；南通大学自然科学项目（11ZY007）。

详细信息

通讯作者:
倪红军，Tel：15751868839，E-mail：ni.hj@ntu.edu.cn。

中图分类号: TM911.4
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出版历程
- 收稿日期: 2013-05-27
- 修回日期: 2013-08-11
- 刊出日期: 2014-01-30

Preparation and electrocatalytic performance of PtPb anode catalyst supported on carbon fiber

School of Mechanical Engineering, Nantong University, Nantong 226019, China

摘要

摘要: 以静电纺丝技术与烧结工艺相结合的方式制备了碳纤维基PtPb纳米催化剂，并采用X射线衍射（XRD）、红外光谱（FT-IR）、扫描电镜（SEM）等分析测试手段对其进行了表征。结果表明，在预氧化温度为300 ℃、碳化温度为800 ℃的条件下，所制备的PtPb阳极纳米催化剂结晶程度好、比表面积大，粒径约为3.05 nm，催化活性颗粒均匀分散在多孔碳纤维骨架上。采用循环伏安法（CV）及交流阻抗（EIS）评价了该催化剂对乙醇氧化反应的电催化性能。结果表明，最大峰电流密度达到125 mA/cm²，电荷转移电阻相较于700 ℃下降了近60%。
- 直接乙醇燃料电池（DEFC） /
- 阳极催化剂 /
- 静电纺丝 /
- 乙醇电氧化
Abstract: Nano PtPb anode catalyst supported on carbon fiber was prepared by the technology of electro-spinning combined with sintering; the catalyst was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and scanning electron microscopy (SEM). The results showed that the nano catalyst is well dispersed on the skeleton of vesicular carbon fiber with a particle size of 3.05 nm; the catalytic efficiency is significantly improved by pre-oxidation at 300 ℃and carbonization at 800 ℃. The catalyst activity in ethanol oxidation was evaluated through cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS). The results indicated that the catalyst has better resistance against poisoning; over it, the maximum current density is 125 mA/cm² and the charge transfer resistance is reduced by 60% in comparison with that over the catalyst carbonized at 700 ℃.
- direct ethanol fuel cell (DEFC) /
- anode catalyst /
- electrosinning /
- electro oxidation of ethanol

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参考文献(13)

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