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材料工程  2018, Vol. 46 Issue (6): 27-35    DOI: 10.11868/j.issn.1001-4381.2017.000173
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
基于Pt/CNTs催化剂的燃料电池Pt/Buckypaper催化层的制备与表征
朱诗尧1, 李平1, 叶黎城1, 郑俊生2,3, 高源2,3
1. 华东理工大学 化学工程联合国家重点实验室, 上海 200237;
2. 同济大学 新能源汽车工程中心, 上海 201804;
3. 同济大学 汽车学院, 上海 201804
Preparation and Characterization of Pt/buckypaper Catalytic Layer Based on Pt/CNTs Catalyst for Fuel Cells
ZHU Shi-yao1, LI Ping1, YE Li-cheng1, ZHENG Jun-sheng2,3, GAO Yuan2,3
1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
2. Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
3. College of Automotive Studies, Tongji University, Shanghai 201804, China
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摘要 为了提高质子交换膜燃料电池催化剂中贵金属的利用率,以碳纳米管(CNTs)负载Pt为催化剂,设计制备了具有催化剂梯度分布结构的Pt/buckypaper催化层。利用扫描电子显微镜等多种表征手段,观察与分析了催化剂和催化层的结构及Pt含量分布,并考察了它们的电化学性能。结果表明,Pt/CNTs催化剂中Pt颗粒在超声混酸氧化处理过的CNTs表面上分布均匀,平均直径为2.4nm。其电化学活性表面积(ECSA)接近于商用Pt/C催化剂的值,比质量活性(MA)则远高于商用催化剂,且具备更为优异的电化学循环稳定性。利用这种催化剂制备的Pt/buckypaper催化层保持着较大的ECSA,表明其中的Pt颗粒具有较高的利用率,体现了这种新颖结构的独特优势。
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朱诗尧
李平
叶黎城
郑俊生
高源
关键词 质子交换膜燃料电池铂催化剂碳纳米管巴基纸梯度结构制备    
Abstract:In order to increase the utilization of the precious metal catalysts in proton exchange membrane fuel cells, a new type of Pt/buckypaper catalytic layer with gradient structure was designed and prepared. Carbon nanotubes (CNTs) pretreated using ultrasonic method in mixed acid were used as the support of Pt catalyst. The Pt/buckypaper catalytic layer with Pt/CNTs gradient distribution was fabricated by simple filtration method. Several techniques such as scanning electron microscope, energy-dispersive X-ray spectroscope were utilized to characterize the microstructure and morphology of the catalyst and catalytic layer as well as the Pt distribution. The electrocatalytic performance of the catalyst and catalytic layer were measured by cyclic voltammetry and linear sweep voltammetry methods. The results show that the Pt particles were well dispersed on the CNTs support and the Pt particle size of Pt/CNTs was about 2.4nm. The electrochemical specific area (ECSA) of Pt/CNTs is similar to that of commercial Pt/C catalyst, while its specific mass activity and electrochemical stability were much higher than those of Pt/C. The ECSA of Pt/buckypaper catalytic layer can basically maintain the value of Pt/CNTs, indicating a high utilization of Pt. The novel gradient structure of catalytic layer manifests its promising applications in fuel cells.
Key wordsproton exchange membrane fuel cell    Pt catalyst    carbon nanotube    buckypaper    gradient structure    preparation
收稿日期: 2017-02-17      出版日期: 2018-06-14
中图分类号:  TM911.42  
通讯作者: 李平(1966-),女,博士,教授,博士生导师,研究方向:新能源与催化材料,E-mail:lipingunilab@ecust.edu.cn;郑俊生(1979-),男,博士,博士生导师,研究方向:车用新能源技术,E-mail:jszheng@tongji.edu.cn     E-mail: lipingunilab@ecust.edu.cn;jszheng@tongji.edu.cn
引用本文:   
朱诗尧, 李平, 叶黎城, 郑俊生, 高源. 基于Pt/CNTs催化剂的燃料电池Pt/Buckypaper催化层的制备与表征[J]. 材料工程, 2018, 46(6): 27-35.
ZHU Shi-yao, LI Ping, YE Li-cheng, ZHENG Jun-sheng, GAO Yuan. Preparation and Characterization of Pt/buckypaper Catalytic Layer Based on Pt/CNTs Catalyst for Fuel Cells. Journal of Materials Engineering, 2018, 46(6): 27-35.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.000173      或      http://jme.biam.ac.cn/CN/Y2018/V46/I6/27
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