Toward a Fundamental Understanding of Strain Generation and Strain Tuning for the Fuel Cell Applications

• DOI: 10.1149/ma2022-01351488mtgabs
• Publication Date: 2022-07-14T16:57:14Z
• Authors: Zhenhua Zeng; Guangdong Liu; Arthur J Shih; Huiqiu Deng; Andrew Steinbach; Marc T. M. Koper; Jeffrey Greeley
• Keywords: Strain (injury); Strain engineering; Reactivity

The development of industrial electrocatalysts with excellent performance in fuel cells strongly relies on the fundamental understanding governing principles catalysis from research well-defined model systems. One particularly successful strategy has been to tune surface strain and thereby modulate electronic structure energetics reaction intermediates, leading a identification catalysts improved activity. For well-known example oxygen reduction (ORR) platinum cells, previous studies indicated that 1% compressive could improve activity by more than 300%. While concept tailoring reactivity metal through discussed over two decades, challenges remain regarding both generation tuning. In present contribution, We will share our recent progress these topics, including [1] tunable intrinsic two-dimensional transition electrocatalysts, [2] stepped [3] tuning supported overlayers. demonstrate how can be used understand terrace-width dependent ORR Pt surfaces have puzzled community decade; they pave way toward developing significantly reaction. References Wang, Z. Zeng*†, W. Gao, T. Maxson, D. Raciti, M. Giroux, X. Pan, C. J. Greeley,. Science 2019, 363, 870-874. Liu, Zeng, Y. Chi, G. Greeley, ACS Catal. 2018, 8, 35-42. Steinbach, Duru, A. Haug, E. Hester, Kuznia, K. Lewinski, S. Luopa, Petrin, Thoma, Kropf, Myers, Yang, Cullen, ECS Transactions 2017, 80 , 659-676. Nano Energy 2016, 29, 369.