共 35 条
Core-Shell Structured PtxMoy@TiO2 Nanoparticles Synthesized by Reverse Microemulsion for Methanol Electrooxidation of Fuel Cells
被引:2
作者:

Ai, Tianyu
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机构:
Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China

Bao, Shuo
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机构:
Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China

Lu, Jinlin
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h-index: 0
机构:
Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China
机构:
[1] Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan, Peoples R China
基金:
中国国家自然科学基金;
关键词:
reverse microemulsion method;
PtMo alloy;
core-shell structure;
electrocatalyst;
methanol oxidation reaction;
OXYGEN REDUCTION;
ELECTROCATALYTIC ACTIVITY;
TUNGSTEN CARBIDE;
CATALYSTS;
OXIDATION;
NI;
STABILITY;
ALLOY;
NANOSTRUCTURES;
PERFORMANCE;
D O I:
10.3389/fchem.2021.667754
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The high price of catalyst and poor durability still restrict the development of fuel cells. In this work, core-shell structured PtxMoy@TiO2 nanoparticles with low Pt content are prepared by a reverse microemulsion method. The morphologies, particle size, structure, and composition of PtxMoy@TiO2 nanoparticles are examined by several techniques such as X-ray Diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy, etc. The PtxMoy@TiO2 electrocatalysts show significantly higher catalytic activity and better durability for methanol oxidation than the commercial Pt/C (ETEK). Compared to Pt/C catalyst, the enhancement of the electrochemical performance of PtxMoy@TiO2 electrocatalysts can be attributed to the core-shell structure and the shift of the d-band center of Pt atoms, which can weaken the adsorption strength toward CO molecules, facilitate the removal of the CO groups and improve electrocatalytic activity. The development of PtxMoy@TiO2 electrocatalysts is promising to reduce the use of noble metal Pt and has a great potential for application in fuel cells.
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页数:9
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