报告题目：    

1. Cost Reduction and Energy Density Improvement for Polymer Electrolyte Fuel Cells

2. Green Hydrogen: Key to Net-zero Carbon Emission

报  告  人：Terence X. Liu (刘晓腾) 教授、Maryam Bayati博士

报告时间：北京时间2023年2月18日 17:00

腾讯会议：110-617-888

邀  请  人：刘建国 教授

Abstract 1: Reducing the cost of fuel cells has become a key research topic for the commercialisation of polymer electrolyte membrane fuel cells, the catalyst is one of the high-cost components and Pt-based precious metal nanomaterials are mainly used. We will talk about the low-cost catalyst and machine learning-assisted electrode preparation method for performance improvement with lowered cost as the first part of the talk. Super lightweight, multifunctional graphene aerogel (GA) monolith has been prepared as electrode material for electrochemical energy and environmental remedy devices. In the second of this presentation, we will discuss its application in a direct methanol fuel cell (DMFC), which is demonstrated for the first time. A new GADMFC design is proposed by using GA to replace two main components within the DMFC—the gas-diffusion layer and the flow field plate. The results indicate a 24.95 mW cm⁻² maximum power density of air polarization is obtained at 25 °C. The membrane electrolyte assembly has a 63.8% mass reduction compared to an ordinary one, which induced a 3 times higher mass power density.

Abstract 2: Green hydrogen has a key role in reaching net-zero emissions by 2050 and consequently global warming lower than 1.5 degrees Celsius. Complementing other decarbonization technologies like renewable power, biofuels, or energy efficiency improvements, clean hydrogen (both renewable and low carbon) offers the only long-term, scalable, and cost-effective option for deep decarbonization in sectors such as steel, glass, cement, maritime, aviation, and ammonia. This presentation will briefly talk about green hydrogen and my group work on this topic.