Design Pt single atom alloy for electrochemical oxygen reduction reaction in hydrogen fuel cells

铂是一种贵金属，在化工、能源和环境等领域被广泛用作催化剂。迫切需要开发更高效、铂含量更少的铂催化剂。本项目的目标是开发用于质子膜燃料电池阴极反应的高活性铂合金催化剂。这种催化剂的开发将降低铂的消耗，并使经济的燃料电池汽车能够使用清洁的氢气。本研究项目的目的是：设计铂在Fe、Co、Ni等地球富金属表面的单原子合金；评价铂单原子合金在燃料电池中的催化性能；了解催化剂的结构与性能的关系。为了实现这一目标，将按照d带原理设计单原子合金。它们的电子结构将通过基于X射线的光谱学进行研究。催化剂的活性将在三电极系统中进行评估。最后，通过组装两种电极系统来研究燃料电池的性能。这类催化剂的发展对获得低成本、高效率的燃料电池材料产生了巨大的影响。

Pt is a noble metal that is widely applied as catalysts in the chemical, energy and environmental sectors. There is a pressing need for the development of more efficient Pt catalysts with less Pt content. The project goal is to develop Pt alloy based catalysts the achieved high activity for the cathode reactions in the proton membrane fuel cells. The development of such catalysts will reduce the Pt consumption and enable economical fuel cell cars powered by clean hydrogen. The aims of this research project are:- to design single-atom alloy of Pt over earth abundant metals, such as Fe, Co and Ni - to evaluate the catalytic performance of the Pt single atom alloys in the fuel cell- to understand the structure-performance relationship of the catalysts.To attain this goal, the single-atom alloys will be designed following the d-band principles. Their electronic structures will be studied via X-ray based spectroscopy. The activity of the catalysts will be evaluated in the three electrode system. Finally the fuel cell performance will be studied by assembling the two electrode systems. The development of such catalysts is over great impact to achieve low cost and highly efficient materials for fuel cell applications.