Enhanced stability of Pt electrocatalysts by nitrogen doping in CNTs for PEM fuel cells
Enhanced stability of Pt electrocatalysts by nitrogen doping in CNTs for PEM fuel cells
复制标题
DOI：
10.1016/j.elecom.2009.09.008
复制
发表时间：
2009-10-01
影响因子：
5.4
通讯作者：
Knights, Shanna
中科院分区：
文献类型：
--
作者：
Chen, Yougui;Wang, Jiajun;Knights, Shanna
首次通过加速耐久性试验（ADT）比较了碳纳米管（CNTs）和不同氮含量的氮掺杂碳纳米管（CNx）上沉积Pt的电化学稳定性。透射电子显微镜（TEM）图像揭示了不同的结构的碳纳米管和CNx，和Pt的颗粒尺寸的减少与氮纳入到碳纳米管。基于电化学表面积（ESA）损失和TEM图像，Pt/CNx比Pt/CNTs表现出更高的稳定性，并且Pt的稳定性随着CNx载体中氮含量的增加而增加。(C)2009爱思唯尔有限公司版权所有。
Electrochemical stabilities of Pt deposited on carbon nanotubes (CNTs) and nitrogen-doped carbon nanotubes (CNx) of different nitrogen contents are compared with accelerated durability tests (ADT) for the first time. Transmission electron microscopy (TEM) images reveal the different structures of CNTs and CNx, and the decrease of Pt particle size with the nitrogen incorporation into CNTs. Based on the loss of electrochemical surface area (ESA) and TEM images, Pt/CNx exhibited much higher stability than Pt/CNTs, and the Pt stability increases with the increase of nitrogen contents in the CNx supports. (C) 2009 Elsevier B.V. All rights reserved.