Nanoporous PdCo Catalyst for Micro-Fuel Cells : Electrodeposition and Dealloying
Nanoporous PdCo Catalyst for Micro-Fuel Cells : Electrodeposition and Dealloying
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用于微型燃料电池的纳米多孔 PdCo 催化剂：电沉积和脱合金
DOI：
10.1155/2011/821916
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T.Osaka
中科院分区：
文献类型：
--
作者：
S.Tominaka;T.Osaka
PdCo合金具有较高的活性和对甲醇的耐受性，是一种很有前途的直接甲醇燃料电池氧还原催化剂。为了实现无膜设计的片上燃料电池，我们应用了这种催化剂。这种新颖的设计使燃料电池变得灵活，并可与其他微型设备集成。在这里，我们总结了我们最近用电化学方法合成纳米结构PdCo催化剂的研究，使我们能够将合金沉积到片上燃料电池的微电极上。首先详细讨论了PdCo的电沉积过程，然后介绍了在电沉积中引入纳米孔的去合金化方法。最后，对其电化学反应和活性进行了充分的讨论。
PdCo alloy is a promising catalyst for oxygen reduction reaction of direct methanol fuel cells because of its high activity and the tolerance to methanol. We have applied this catalyst in order to realize on‐chip fuel cell which is a membraneless design. The novel design made the fuel cells to be flexible and integratable with other microdevices. Here, we summarize our recent research on the synthesis of nanostructured PdCo catalyst by electrochemical methods, which enable us to deposit the alloy onto microelectrodes of the on‐chip fuel cells. First, the electrodeposition of PdCo is discussed in detail, and then, dealloying for introducing nanopores into the electrodeposits is described. Finally, electrochemical response and activities are fully discussed.