点击次数：

影响因子：8.7

DOI码：10.1002/smtd.202000265

发表刊物：Small methods

摘要：Direct methanol fuel cells (DMFCs) are considered as a promising candidate for portable electronic devices and small electric vehicles due to their high gravimetric and volumetric energy densities. The operation of DMFCs requires efficient catalysts, especially on the anode to promote methanol oxidation reaction (MOR). To date, platinum has emerged as a chief contender for MOR. Unfortunately, most catalysts suffer from severe CO poisoning, which can passivate the catalytic surface and decrease the activity over time. Herein, a transient, thermal radiation method to synthesize ultrafine platinum nanoclusters (0.68 ± 0.13 nm) supported on carbon black (Pt NC/CB) is demonstrated. The sample demonstrates a great CO poisoning resistance and excellent activity toward MOR. The ultrafine platinum nanoclusters with increased active sites can promote the oxidation of CO at potential as low as 0.4 V. The Pt NC/CB displays an onset potential of 0.4 V and a peak current density of 1.30 mA cm−2ECSA (electrochemical active surface area), which is superior than that of reported catalysts (0.57–1.06 mA cm−2ECSA), while many of the catalysts are alloys involving noble metals. This work showcases an efficient method to prepare Pt nanoclusters with high MOR activity and great CO poisoning resistance.

合写作者：Yifan Liu, Yang Liu, Qi Dong, Geng Zhong, Xiang Wang, Zhenyu Liu, Xizheng Wang, Shuaiming He, Wenqi Zhou, Guofeng Wang

第一作者：Yun Qiao

论文类型：期刊论文

通讯作者：Chao Wang, Liangbing Hu

学科门类：工学

文献类型：J

卷号：4

期号：9

页面范围：2000265

是否译文：否

发表时间：2020-06-26

收录刊物：SCI

发布期刊链接：https://onlinelibrary.wiley.com/doi/abs/10.1002/smtd.202000265