Preparation of carbon-supported PtCo nanoparticle catalysts for the oxygen reduction reaction in polymer electrolyte fuel cells by an electron-beam irradiation reduction method
Preparation of carbon-supported PtCo nanoparticle catalysts for the oxygen reduction reaction in polymer electrolyte fuel cells by an electron-beam irradiation reduction method
复制标题
电子束辐照还原法制备碳载PtCo纳米颗粒催化剂用于聚合物电解质燃料电池氧还原反应
DOI：
10.1007/s10853-013-7292-y
复制
发表时间：
2013
影响因子：
4.5
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Y. Ohkubo;Y. Hamaguchi;S. Seino;T. Nakagawa;S. Kageyama;et al.
采用电子束辐照还原法（EBIRM）制备了碳载PtCo/C纳米粒子（PtCo/C），用于聚合物电解质膜燃料电池（PEFC）阴极氧还原反应（ORR）的电极催化剂。EBIRM允许纳米粒子通过在用高能电子束照射的水溶液中还原前体离子而容易地制备。利用透射电子显微镜、电感耦合等离子体原子发射光谱、X射线衍射和X射线吸收近边结构技术对PtCo/C的结构进行了表征。首次发现了利用EBIRM在碳载体上同时制备PtCo合金和Co氧化物。采用线性扫描伏安法和循环伏安法分别对PtCo/C的催化活性和耐久性进行了评价。Co的加入不仅提高了Pt/C催化剂的ORR活性，而且改善了催化剂的耐久性。随着Co浓度的增加，这两种行为变得明显。这些改进是由PtCo合金和Co氧化物的影响来解释的。我们证明了EBIRM不仅可以在碳载体上同时合成合金和氧化物，而且可以批量生产PEFC阴极的电极催化剂。
We prepared carbon-supported PtCo bimetallic nanoparticles (PtCo/C) as electrode catalysts for the oxygen reduction reaction (ORR) at the cathodes in polymer electrolyte membrane fuel cells (PEFCs) by an electron-beam irradiation reduction method (EBIRM). An EBIRM allows nanoparticles to be easily prepared by the reduction of precursor ions in an aqueous solution irradiated with a high-energy electron beam. The structures of PtCo/C were characterized by transmission electron microscopy, inductively coupled plasma atomic emission spectrometry, and the techniques of X-ray diffraction and X-ray absorption near edge structure. It found for the first time that both PtCo alloy and Co oxide were prepared simultaneously on the carbon support by an EBIRM. The catalytic activity and durability of PtCo/C were evaluated by linear-sweep voltammetry and cyclic voltammetry, respectively. The addition of Co to Pt/C not only enhanced the catalytic activity for the ORR but also improved the catalytic durability. As the Co concentration increased, both behaviors became pronounced. These improvements are explained by the effects of both PtCo alloy and Co oxide. We demonstrated that an EBIRM can not only synthesize the alloy and oxide simultaneously on the carbon support but also mass-produce the electrode catalysts for PEFC cathodes.
登录
查看更多内容
影响因子：
2.5
作者：
Ravel, B;Newville, M
通讯作者：
Newville, M
使用田口实验设计优化无表面活性剂多元醇合成铂-钴电催化剂的方法
影响因子：
9.2
作者：
C. Grolleau;C. Grolleau;C. Coutanceau;F. Pierre;J. Leger
通讯作者：
J. Leger
影响因子：
17.1
作者：
Beard, K. D.;Borrelli, David;Monnier, John R.
通讯作者：
Monnier, John R.
影响因子：
5.5
作者：
Yamamoto, Takao A.;Kageyama, Satoru;Daimon, Hideo
通讯作者：
Daimon, Hideo