主讲人：Prof. Peng Li

时间：9月10日上午10:30
腾讯会议：856-679-826

报告人简介：

Peng Li is a Research Fellow at RMIT University whose work advances integrated chemistry and engineering for carbon capture and utilisation. His research combines mechanistic electrochemistry, catalyst design, and device engineering to develop practical pathways for converting captured CO₂ into valuable chemicals and fuels, while also informing broader innovations in clean energy conversion and storage. By linking tandem chemistry, materials science, and chemical engineering, he has established design rules and operating principles that are helping shape next-generation CO₂ electrolyser architectures and Australia’s translation agenda for low-emission manufacturing. As of April 2026, his work has attracted more than 7,000 citations (H-index 40, i10-index 110), with over 130 refereed publications, 2 issued patents, 10 ESI Highly Cited Papers, and recognition in Stanford’s Top 2% Scientists list. His research appears in leading journals including Nature Energy, Nature Catalysis, Science Advances, Chemical Society Reviews, Advanced Materials, and Energy & Environmental Science. Supported by competitive research funding including an ARC DECRA Fellowship, he is building an internationally visible program focused on scalable, science-led solutions for decarbonisation.

讲座摘要：

The urgent need to mitigate industrial CO₂ emissions has driven global efforts to integrate carbon capture and utilization (CCU) technologies.^1,2 However, conventional amine scrubbing processes suffer from high energy penalties due to the thermal regeneration step, while gas-fed CO₂ electrolysis systems often face issues related to low CO₂ solubility, purity requirements, and scale-up challenges. In this work, we present a new tandem system that directly couples amine-based CO₂ capture using piperazine (PZ) with electrochemical conversion, bypassing the need for energy-intensive CO₂ desorption.^3-5 Instead of releasing gaseous CO₂, the captured carbamate species formed in PZ solution are directly electrolyzed into value-added products. To facilitate this transformation, we have designed and screened nickel single-atom catalysts (Ni SACs), which exhibit outstanding activity and selectivity for carbamate reduction under room temperature conditions. Our integrated approach achieves high Faradaic efficiencies and current densities, while significantly reducing overall energy input compared to conventional CCU routes. This work not only demonstrates a practical pathway for electrifying post-combustion capture processes, but also opens a new paradigm for “capture-to-conversion” technologies that are scalable, retrofittable, and compatible with existing infrastructure. The insights into carbamate reactivity and catalyst design offer a platform for future development toward direct air capture, flue gas utilization, and net-zero industrial applications.

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