Pt-W bimetallic alloys as CO-tolerant PEMFC anode catalysts
Pt-W bimetallic alloys as CO-tolerant PEMFC anode catalysts
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Pt-W 双金属合金作为耐 CO PEMFC 阳极催化剂
DOI：
10.1016/j.electacta.2012.11.011
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发表时间：
2013-02-01
影响因子：
6.6
通讯作者：
Chen, Shengli
中科院分区：
文献类型：
--
作者：
Dai, Yu;Liu, Yuwen;Chen, Shengli
研究了Pt 3 W ~ PtW 2纳米合金作为氢氧化电催化剂的性能。结果表明，Pt与W合金化后，其对HOR的电催化活性显著提高，交换电流密度比纯Pt提高近4倍。此外，这些Pt-W合金具有优于Pt和PtRu的上级CO耐受性，这主要是由于CO在其富Pt表面上的键合减弱。(C)2012爱思唯尔有限公司版权所有。
Pt-W nanoalloys with compositions ranging from Pt3W to PtW2 were explored as electrocatalysts for hydrogen oxidation reaction (HOR). It is shown that alloying Pt with W can lead to significantly enhanced electrocatalytic activity for HOR, with nearly 4 times increase in the exchange current density as compared with pure Pt. What's more, these Pt-W alloys possess superior CO tolerance to Pt and PtRu, mainly due to the weakened bonding of CO on their Pt-enriched surfaces. (C) 2012 Elsevier Ltd. All rights reserved.