文献类型：期刊文献

英文题名：Enhanced operational performance of PEM fuel cells with Porous-Carbon catalyst support: A multiscale modeling approach

作者：Yang, Liu[1];Ma, Zhejie[1];Gan, Quanquan[2,3];Zhang, Qi[1];Li, Ping[1];Cao, Chenxi[4]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China;[3]Shanghai Shen li High Tech Co Ltd, Yuandong Rd, Shanghai 201401, Peoples R China;[4]East China Univ Sci & Technol, Key Lab Smart Mfg Energy Chem Proc, Minist Educ, Shanghai 200237, Peoples R China

年份：2023

卷号：281

外文期刊名：ENERGY CONVERSION AND MANAGEMENT

收录：;EI(收录号：20231013682357);WOS:【SCI-EXPANDED(收录号:WOS:000953152600001)】；

基金：This work is supported by the National Key Research and Development Program of China (2022YFB3305903), Shanghai Pilot Program for Basic Research (22TQ1400100-3), National Natural Science Foundation of China (62273149), Fundamental Research Funds for the Central Universities (222202317006) and the Programme of Introducing Talents of Discipline to Universities (the 111 Project) under Grant B17017.

语种：英文

外文关键词：PEM fuel cell; Porous carbon support; Mathematical modeling; Cold start; Normal working

摘要：Replacing the conventional catalyst support of Pt/C for proton exchange membrane fuel cells (PEMFC) by meso-porous carbon is considered highly promising in improving the catalyst usage and the cell performance. How-ever, ambiguity on the mechanism of such performance enhancement hinders further optimization and imple-mentation of the porous carbon supports. Herein, we propose a unified agglomerate model for PEMFC catalyst layers with different carbon supports, valid for both normal-working and cold-start conditions, and utilizing minimal phenomenological parameters. Parametric study regarding key material properties reveals that typical porous carbon supports such as Ketjenblack enables easier cold start but slightly deteriorates the nominal working cell performance. Using sensitivity analysis, five carbon property variables have been identified as most significantly affecting the overall cell performance. Fine-tuning the carbon radius and the platinum fraction inside the micropores of Ketjenblack is found pivotal for maximizing the catalyst layer effectiveness.