Video Article Open Access
Composition Engineered Electrocatalysts for Water Splitting and Metal-ion batteries
Kun Xu, Yao Zhou, Zhe Wang, Hong Jin Fan*
School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
Vid. Proc. Adv. Mater., Volume 2, Article ID 2021-0180 (2021)
Publication Date (Web): 13 Feb 2021
Copyright © IAAM
Water electrolysis, fuel cells, and metal-air batteries all require efficient and cheap electrocatalysts that can significantly lower the reaction overpotentials. Defects due to doping or alloy are pivotal to tailoring the electrocatalytic activities of the electrode materials. In this talk, I will discuss about effect of composition engineering and doping of electrocatalysts in their performance in water splitting and meal-ion batteries. First, we show dual anion doping, or metal-anion co-doping in alloy compounds can simultaneously modulate key parameters in water dissociation and hydrogen adsorption energies, leading to evident enhancement in both hydrogen and oxygen evolution reactions activities. Second, local configurations in the basal plane of MoS2 due to atomic doping has triggered the intrinsic HER activity. Finally, some applications in high-power and durable zinc air batteries will also be presented.
Water splitting, hydrogen generation reaction, electrocatalysts, metal-ion batteries, defect chemistry.
This work is supported by Singapore MOE (MOE2017-T2-1-073) and A*STAR (AMEIRG18-0006).
Hong Jin Fan joined in NTU as Nanyang Assistant Professor in 2008, promoted to Associate Professor with tenure in 2014, and full professor in 2019. He received PhD in Physics from National University of Singapore in 2003, followed by postdoc at Max-Planck-Institute of Microstructure Physics, Germany and University of Cambridge. His research interests include energy materials and technologies, including photo- and electrocatalysis water splitting for hydrogen generation, and new batteries. He has authored and co-authored more than 2300 journal papers with nearly 25000 citations. He is selected as Fellow of Royal Society of Chemistry (FRSC), and has been consecutively recognized as Highly Cited Researchers since 2016 (Clarivate Analytics). He is currently Associate Editor of the journal Materials Today Energy, and editorial board member of other Elsevier and Wiley journals. He has committed significant professional service by organizing conferences and symposia over the years, including MRS in US and ICMAT in Singapore.