Citation: Zhihua Xu, Lixia Rao, Haiyan Song, Zhaoxiong Yan, Lijun Zhang, Shuibin Yang. Enhanced ethanol electro-oxidation on CeO₂-modified Pt/Ni catalysts in alkaline solution[J]. Chinese Journal of Catalysis, ;2017, 38(2): 305-312. doi: 10.1016/S1872-2067(16)62560-3 shu

Enhanced ethanol electro-oxidation on CeO₂-modified Pt/Ni catalysts in alkaline solution

a Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, and Flexible Display Materials and Technology Co-innovation Center of Hubei Province, Jianghan University, Wuhan 430056, Hubei, China;
b Hubei Key Laboratory for Processing and Application of Catalytic Materials, Huanggang Normal University, Huanggang 438000, Hubei, China

Received Date: 29 August 2016
Revised Date: 22 September 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (21307038 and 21577046), Key Project of Chinese Ministry of Education (212115), and Physical Chemistry Experiment of Huanggang Normal University (2015CK12).

Pt/Ni catalysts modified with CeO₂ nanoparticles were prepared by simple composite electrodeposition of Ni and CeO₂, and spontaneous Ni partial replacement by Pt processes. The as-prepared CeO₂-modified Pt/Ni catalysts showed enhanced catalytic performance for ethanol electro-oxidation compared with pure Pt/Ni, and acetate species were proposed to be the main products of the oxidation when using these catalysts. The content of CeO₂ in the as-prepared catalysts influenced their catalytic activity, with Pt/NiCe₂ (obtained from an electrolyte containing 100 mg/L CeO₂ nanoparticles) exhibiting higher activity and relatively better stability in ethanol electro-oxidation. This was mainly due to the oxygen storage capacity of CeO₂, the interaction between Pt and CeO₂/Ni, and the relatively small contact and charge transfer resistances. The results of this work thus suggest that electrocatalysts with low price and high activity can be rationally designed and produced by a simple route for use in direct ethanol fuel cells.
- Direct ethanol fuel cell,
- Ethanol oxidation,
- CeO₂ nanoparticle,
- Composite electrodeposition,
- Electrocatalyst
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Enhanced ethanol electro-oxidation on CeO₂-modified Pt/Ni catalysts in alkaline solution