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Highly Stable Pt‐Based Ternary Systems for Oxygen Reduction Reaction in Acidic Electrolytes
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2020-09-27 , DOI: 10.1002/aenm.202002049
Jun Kim 1 , Yongju Hong 2 , Kwangyeol Lee 2 , Jin Young Kim 1
Affiliation  

In the era of the global rise of energy consumption and the accompanying environmental issues, energy production via fuel cells plays a vital role in a clean, secure, and affordable energy future. The development of Pt‐based binary alloy catalysts for the oxygen reduction reaction (ORR) has contributed significantly to the commercial realization of fuel cells, such as polymer electrolyte membrane fuel cells (PEMFCs) and phosphoric acid fuel cells (PAFCs). However, the short lifetime of the Pt‐based binary alloy catalyst remains a significant gap between lab‐scale and real‐device evaluation systems, calling for the development of catalysts that do not have stability issues. Among the various catalyst systems developed as alternatives to Pt‐based binary alloy catalysts, Pt‐based ternary systems with an additional element to the binary systems seem to provide the much‐awaited answer toward enhanced catalyst stability. Here, this progress report focuses on fundamental challenges of industrial fuel cell applications and provides broad and balanced insights on remarkable progress to date. Finally, it presents several perspectives on ideal ternary system design of efficient and robust Pt‐based electrocatalysts and guidance for future development beyond the academic level.

中文翻译:

高度稳定的基于Pt的三元体系在酸性电解质中的氧还原反应

在全球能源消耗上升以及随之而来的环境问题的时代,通过燃料电池生产能源在清洁,安全和可负担的未来能源中起着至关重要的作用。用于氧还原反应(ORR)的基于Pt的二元合金催化剂的开发为燃料电池的商业实现做出了重要贡献,例如聚合物电解质膜燃料电池(PEMFC)和磷酸燃料电池(PAFC)。但是,基于Pt的二元合金催化剂的使用寿命短,仍然在实验室规模和实际设备评估系统之间存在很大差距,这要求开发不存在稳定性问题的催化剂。在各种可替代Pt基二元合金催化剂的催化剂体系中,在二元体系中增加元素的基于Pt的三元体系似乎为提高催化剂的稳定性提供了人们期待已久的答案。在这里,这份进度报告重点介绍了工业燃料电池应用的基本挑战,并对迄今为止的显着进展提供了广泛而平衡的见解。最后,它提出了关于高效,耐用的基于Pt的电催化剂的理想三元体系设计的几种观点,以及对超出学术水平的未来发展的指导。
更新日期:2020-11-03
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