镍
X射线光电子能谱
结合能
金属
材料科学
碳纤维
电子转移
钴
分析化学(期刊)
化学
无机化学
物理化学
原子物理学
冶金
化学工程
物理
色谱法
复合数
工程类
复合材料
作者
Gareth Haslam,Kinji Satô,T. Mizokawa,Xiao-Yao Chin,G.T. Burstein
摘要
Binary Ni-C thin-film alloys, which have been shown to be passive against corrosion in hot sulphuric acid solution whilst also being electrocatalytically active, were investigated by XPS to determine the oxidation state of the metal and carbon components. The Ni component produces a Ni 2p spectrum similar to that of metallic nickel (i.e., no oxidation occurs) but with a 0.3 eV shift to higher binding energy (BE) due to electron donation to the carbon matrix. The C 1s peak shows a shift to lower BE by accepting electrons from the Ni nanocrystals. A cluster-model analysis of the observed Ni 2p spectrum is consistent with the electron transfer from the nickel to the carbon.
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