High dispersion and electrocatalytic properties of platinum on well-aligned carbon nanotube arrays
High dispersion and electrocatalytic properties of platinum on well-aligned carbon nanotube arrays
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DOI：
10.1016/j.carbon.2003.09.023
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发表时间：
2004-01-01
期刊：
影响因子：
10.9
通讯作者：
Yao, SZ
中科院分区：
文献类型：
--
作者：
Tang, H;Chen, JH;Yao, SZ
通过电位阶跃法将铂（Pt）电催化剂电化学分散在排列良好的碳纳米管（CNT）阵列上。通过扫描电子显微镜、透射电子显微镜和能量色散X射线光谱仪对所得Pt/CNT电极的结构和元素组成进行了表征。采用线性扫描伏安法研究了Pt/CNT电极对氧还原反应的电催化性能。与Pt/石墨电极相比，Pt/CNT电极具有更高的电催化活性。这可能归因于铂催化剂的高分散性和碳纳米管载体的特殊性能。结果表明Pt/CNT在质子交换膜燃料电池中具有良好的潜在应用。 (C) 2003 Elsevier Ltd. 保留所有权利。
Platinum (Pt) electrocatalyst was electrochemically dispersed on well-aligned carbon nanotube (CNT) arrays by a potential-step method. The structure and elemental composition of the resulting Pt/CNT electrode were characterized by scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. The electrocatalytic properties of the Pt/ CNT electrode for oxygen reduction reaction have been investigated by linear sweep voltammetry. Compared with a Pt/graphite electrode, higher electrocatalytic activity of the Pt/CNT electrode can be observed. This may be attributed to the high dispersion of platinum catalysts and the particular properties of CNT supports. The results imply that the Pt/CNT has good potential applications in proton exchange membrane fuel cells. (C) 2003 Elsevier Ltd. All rights reserved.