化学
氧还原反应
氧还原
氧气
还原(数学)
无机化学
电化学
化学工程
电极
有机化学
物理化学
几何学
数学
工程类
作者
Qiulin Li,Yangyang Tan,Guandie Ma,Hao Chen,Ruilin He,Fan Liu,Wenqian Liu,Maowen Xu,Shu‐Juan Bao
标识
DOI:10.1021/acs.inorgchem.4c01844
摘要
Compared to Pt/C, the atomic ordered Pt-based intermetallic compounds can deliver higher efficiency and reliable stability, and they are considered one of the ideal cathode catalysts for the next generation of fuel cells. This work proposed a simple ferrocene atmosphere annealing method to improve commercial Pt/C and convert Pt to L10-PtFe. After further acid etching treatment, the obtained carbon-supported Pt-skin L10-PtFe (Pt-skin L10-PtFe/C) with superfine particle size (∼3.3 nm) not only was highly dispersed on the carbon but possesses a thin Pt skin, like the armor of L10-PtFe. As excepted, the ORR activity of Pt-skin L10-PtFe/C (0.375 A mg–1; 0.921 mA cm–2) is far better than that of commercial Pt/C (0.121 A mg–1; 0.260 mA cm–2), and its stability is also greatly improved. Our proposed gas–solid reaction is straightforward and has great potential in producing Pt-based intermetallic catalysts on a large scale.
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