Carbon-Free Pt Electrocatalysts Supported on SnO2 for Polymer Electrolyte Fuel Cells
Carbon-Free Pt Electrocatalysts Supported on SnO2 for Polymer Electrolyte Fuel Cells
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DOI：
10.1149/1.3152325
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发表时间：
2009-01-01
影响因子：
--
通讯作者：
Sasaki, K.
中科院分区：
文献类型：
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作者：
Masao, A.;Noda, S.;Sasaki, K.
通过电化学和微观结构表征，开发了用于聚合物电解质燃料电池（PEFC）的无碳Pt/SnO 2（Pt/SnO 2）电催化剂。Pt/SnO 2表现出与常规Pt电催化剂相当的电流-电压特性，特别是相对于RHE，对高达0.9和1.3 V-RHE（RHE表示可逆氢电极）的10，000次电压循环具有相当大的耐受性。这些结果表明，无碳氧化物负载的Pt/SnO 2可以是一个有前途的替代电催化剂，具有长期的耐久性，对电压循环高达更高的电位，作为一个可能的根本解决方案的PEFC降解所造成的碳载体腐蚀。
Carbon-free Pt-based electrocatalysts supported on semiconducting SnO2 (Pt/SnO2) have been developed for polymer electrolyte fuel cells (PEFCs) by various electrochemical and microstructural characterizations. Pt/SnO2 exhibited comparable current-voltage characteristics to conventional Pt electrocatalysts and, in particular, a considerable tolerance against 10,000 cycles of voltages up to 0.9 and 1.3 V-RHE (RHE denotes reversible hydrogen electrode) vs the RHE. These results indicate that the carbon-free oxide-supported Pt/SnO2 can be a promising alternative electrocatalyst with long-term durability against voltage cycling up to higher potentials, as a possible fundamental solution to the PEFC degradation caused by carbon support corrosion.