ArticleSmall (Weinheim an der Bergstrasse, Germany)2026
Catalyst Layer Pore Design Based on Oxygen Mean Free Path for Low-Pt HT-PEMFCs.
Xiaolin Dai, Jinwu Peng, Dong Liu, Jinzhen Huang, Hong Huang, Wenjun Liu, Jingjing Lin, Lei Wang
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In one paragraphArticle in Small (Weinheim an der Bergstrasse, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
Xiaolin DaiGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.
Jinwu PengGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.
Dong LiuGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.ORCID https://orcid.org/0000-0002-0139-1512 Jinzhen HuangGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.
Hong HuangGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.
Wenjun LiuGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.
Jingjing LinGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.
Lei WangGuangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen, P. R. China.ORCID https://orcid.org/0000-0002-2313-2095 Funding
Construction project for 2021 full-time professional degree off-campus practice base of Shenzhen University SZUGS2021XWID09National Natural Science Foundation of China 22309117National Natural Science Foundation of China 22379099National Natural Science Foundation of China 22409136Shenzhen Science and Technology Innovation Commission 20220809111527001Shenzhen Science and Technology Program 20231120195047001Shenzhen Science and Technology Program KQTD20190929173914967
6 · The paper itselfAbstract
Mass transport limitations critically restrict the performance of high-temperature proton exchange membrane fuel cells (HT-PEMFCs), primarily due to the mismatch between the oxygen mean free path and the pore size of conventional catalyst layers (CLs). This mismatch leads to severe Knudsen diffusion, particularly under low platinum (Pt) loadings. In this work, the mean free path of oxygen in the 100°C-200°C range is calculated to determine an optimal pore size of approximately 200 nm. Correspondingly, cumulative macropores are introduced into the CL using a sacrificial templating strategy, thereby enabling efficient gas diffusion. This mean-free-path-informed design promotes molecular diffusion over restricted Knudsen diffusion, reducing oxygen transport resistance by 61.2% at a low Pt loading of 0.14 mg
Indexed as
mass transport optimizationmean free pathporous catalyst layerPt loading
Identifiers
PMID42227340
PMCPMC13392701
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