Microstructural Effects on Electrocatalytic Oxygen Reduction Activity of Nano‐Grained Thin‐film Platinum in Acid Media
Microstructural Effects on Electrocatalytic Oxygen Reduction Activity of Nano‐Grained Thin‐film Platinum in Acid Media
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酸性介质中纳米晶薄膜铂的微观结构对电催化氧还原活性的影响
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
G. Stoner
中科院分区：
文献类型：
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作者：
J. Poirier;G. Stoner
使用旋转盘电极技术研究了碳上薄膜铂沉积物的氧还原活性及其与催化剂微观结构的关系。铂的薄膜形式是催化剂研究的可行工具，因为它可以提供细碎的碳负载铂的内在活性数据。对碳上溅射多晶薄膜铂沉积物（负载量为 6 至 200 μg/cm 2 ）进行了表征，并测定了它们在 25 o C 在 1M 硫酸中的氧还原活性。催化剂表征包括电化学表面积测量以及使用透射电子显微镜确定晶粒尺寸、形态和晶格参数
The oxygen reduction activity of thin-film platinum deposits on carbon and its relationship to catalyst microstructure has been investigated using rotating-disk-electrode techniques. The thin-film form of platinum is a viable tool for catalyst study as it can provide intrinsic activity data on finely divided carbon-supported platinum. Sputtered polycrystalline thin-film platinum deposits on carbon (loading from 6 to 200 μg/cm 2 ) have been characterized, and their oxygen reduction activity at 25 o C in 1M sulfuric acid determined. Catalyst characterization consisted of electrochemical surface-area measurement and establishing grain size, morphology, and lattice parameter using transmission electron microscopy