Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202115835
Keywords
Molten-salt synthesis; Metal-nitrogen-graphene; Electrocatalyst; Oxygen reduction; Platinum alloy
Categories
Funding
- National Key Research and Development Program of China [2021YFA1600800]
- National Natural Science Foundation of China [22075092]
- Program for HUST Academic Frontier Youth Team [2018QYTD15]
- Innovation and Talent Recruitment Base of New Energy Chemistry and Device [B21003]
- Young Talent Support Plan of Xi'an Jiaotong University
- Open Funds of State Key Laboratory of Physical Chemistry of Solid Surfaces (Xiamen University) [202018]
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The study of a low-platinum nanoalloy-implanted graphene catalyst for fuel cells shows high efficiency and durability, providing important insights for the future development of fuel cell technology.
Fuel cells are considered as a promising alternative to the existing traditional energy systems towards a sustainable future. Nevertheless, the synthesis of efficient and robust platinum (Pt) based catalysts remains a challenge for practical applications. In this work, we present a simple and scalable molten-salt synthesis method for producing a low-platinum (Pt) nanoalloy implanted in metal-nitrogen-graphene. The as-prepared low-Pt alloyed graphene exhibits a high oxygen reduction activity of 1.29 A mg(Pt)(-1) and excellent durability over 30 000 potential cycles. The catalyst nanoarchitecture of graphene encased Pt nanoalloy provides a robust capability against nanoparticle migration and corrosion due to a strong metal-support interaction. Similarly, advanced characterization and theoretical calculations show that the multiple active sites in platinum alloyed graphene synergistically account for the improved oxygen reduction. This work not only provides an efficient and robust low-Pt catalyst but also a facile design idea and scalable preparation technique for integrated catalysts to achieve more profound applications in fuel cells and beyond.
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