| 微结构对纳米碳纤维氧阴极还原性能影响 |
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| 引用本文： | 郑俊生,张新胜,李平,袁渭康.微结构对纳米碳纤维氧阴极还原性能影响[J].同济大学学报(自然科学版),2011,39(8):1193-1197. |
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| 作者姓名： | 郑俊生 张新胜 李平 袁渭康 |
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| 作者单位： | 1. 同济大学新能源汽车工程中心,上海 201804;同济大学汽车学院,上海 201804;华东理工大学化学工程联合国家重点实验室,上海 200439
2. 华东理工大学化学工程联合国家重点实验室,上海,200439 |
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| 基金项目： | 国家自然科学基金项目（21006073）,中国博士后科学基金（20080440645, 200902250） |
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| 摘 要： | 在制备微结构可控纳米碳纤维基础上,研究纳米碳纤维微结构对氧气电催化还原反应(oxygen reduction reaction,ORR)性能的影响.利用化学还原法合成了Pt电催化剂,研究了纳米碳纤维微结构对Pt/CNFs电催化剂电催化性能的影响.研究发现,相对于基于活性炭的电催化剂,载于纳米碳纤维的电催化剂具有较高的ORR活性;同时,基于板式纳米碳纤维的电催化剂表现出最高的ORR活性.
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| 关 键 词： | 纳米碳纤维 微结构 电催化剂 氧的阴极还原性能 |
| 收稿时间： | 2010/10/24 0:00:00 |
| 修稿时间： | 6/17/2011 2:28:01 PM |
Microstructure Effect of Carbon Nanofibers on Oxygen Reduction Properties of Cathode |
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| ZHENG Junsheng,ZHANG Xinsheng,LI Ping and YUAN Weikang.Microstructure Effect of Carbon Nanofibers on Oxygen Reduction Properties of Cathode[J].Journal of Tongji University(Natural Science),2011,39(8):1193-1197. |
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| Authors: | ZHENG Junsheng ZHANG Xinsheng LI Ping and YUAN Weikang |
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| Institution: | Clean Energy Automotive Engineering Center, Tongji University,East China University of Science and Technology,East China University of Science and Technology,East China University of Science and Technology |
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| Abstract: | Microstructures controllable carbon nanofibers (CNFs), i.e. platelet CNFs (p-CNFs), fish-bone CNFs (f-CNFs) and tube CNFs (t-CNFs), were synthesized and the microstructure effect of on oxygen reduction reaction (ORR) performance was investigated. The physico-chemical and electrochemical properties of the CNFs and Pt/CNFs are characterized by high resolution transmission electron microscope (HRTEM), X-ray diffraction (XRD) and cyclic voltammetry. The p-CNFs perform the highest ORR activity because they have higher ratio of edge atoms to basal atoms. The t-CNFs have the most negative ORR onset potential and the least ORR peak current for their lowest ratio of edge atoms to basal atoms. Platinum electrocatalysts supported on CNFs and activated carbons are synthesized, too. Pt/p-CNFs exhibits more positive ORR onset reduction potential than the electrocatalyst supported on other CNFs and activated carbon. |
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| Keywords: | Carbon nanofibers Microstructure Electrocatalyst Oxygen reduction reaction |
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