Speaker: Prof. Yanwei Lum, professer from the National University of Singapore

Title: New Insights and Directions for Electrochemical CO₂ Reduction to Chemicals and Fuels

Time: 14:30 September 1st, 2025 (Monday)

Venue: No.2 conference room on the 3rd floor, Building No.5

Host: Prof. Shenlong Zhao

Info. of Speaker：

Dr. Yanwei Lum obtained his BEng degree in Materials Science and Engineering at Imperial College London in 2012. He then received his PhD degree in Materials Science and Engineering at the University of California, Berkeley in 2018 under Prof. Joel W. Ager III. This was followed by a PostDoctoral stint at the University of Toronto with Prof. Edward H. Sargent. He joined the Department of Chemical and Biomolecular Engineering (ChBE) at the National University of Singapore (NUS) as a Presidential Young Assistant Professor in 2021. His research interests include electrocatalysis, CO2/NO3- reduction, electroorganic reactions and hydrogen storage. As an independent principal investigator, he has published in international journals such as Nat. Chem., Nat. Synth., Nat. Commun. and Sci. Adv. as the corresponding author.

Abstract:

Electrochemical CO₂ and NO₃^- reduction are promising technologies for the net-zero and sustainable production of chemicals. If powered by renewable energy, this can also be a valuable method for storing renewable energy in the form of chemical fuels. In this talk, we will discuss our recent works, where we reveal important new insights into the reaction mechanisms. Here, we use isotope labelling studies to offer new perspectives into catalyst design strategies and understanding of reaction pathways. Furthermore, we show how the catalyst and reaction system can be appropriately designed for the direct conversion of dilute CO₂ or simulated flue gas streams into value-added products. For instance, we designed a zero-gap electrolyzer system that can transform simulated flue gas into urea. Finally, we move beyond the catalyst and demonstrate how systems engineering can also be an important tool to improve overall performance. One example is the development of a 'reversed' gas diffusion electrode, which can output high purity synthesis gas without needing product separation.

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