电源技术2026，Vol.50Issue(4)：759-765,7.DOI:10.3969/j.issn.1002-087X.2026.04.021
等离子体改性碳纤维纸在燃料电池气体扩散层中的应用
Application of plasma-modified carbon fiber paper in fuel cell gas diffusion layers
刘名扬 1周海伦 1兰喜杰 2赵红3
作者信息
- 1. 大连交通大学 交通工程学院,辽宁 大连 116021
- 2. 大连交通大学 材料科学与工程学院,辽宁 大连 116023
- 3. 四川轻化工大学 化学与环境工程学院,四川 自贡 643002
- 折叠
摘要
Abstract
Aqueous phenolic resin often poorly wets carbon fibers due to its physicochemical proper-ties,leading to non-uniform impregnation.This study applied plasma hydrophilic modification to car-bon fiber paper.Morphology,resin distribution,pores,and performance were systematically charac-terized.The results show that the resin distributes more uniformly after modification,effectively fill-ing large pores.The pore distribution shifts from a broad peak around 50 μm to a narrow single peak within the 20-50 μm range,forming a superior conductive network.The through-plane resistivity de-creases from 6.4 mΩ·cm2 to 5.3 mΩ·cm²,and the in-plane resistivity decreases from 15.7 mΩ·cm to 11.4 mΩ·cm.Compressive strength increases significantly(stress at 20%strain reaches 1.32 times that of the untreated sample).Although the air permeability decreased from 178 cm3/(cm2·s)to 94 cm3/(cm2·s),this change reflects essential improvements in impregnation uniformity and pore struc-ture.Single-cell tests demonstrate simultaneous reduction of ohmic and mass transfer polarizations,with the limiting current density increasing from 2.4 A/cm2 to 3.0 A/cm2.This process provides an ef-fective solution for producing high-performance GDLs using aqueous resin.关键词
等离子体改性/碳纤维纸/气体扩散层/水性酚醛树脂/导电性Key words
plasma modification/carbon fiber paper/gas diffusion layer/aqueous phenolic resin/electrical conductivity分类
信息技术与安全科学引用本文复制引用
刘名扬,周海伦,兰喜杰,赵红..等离子体改性碳纤维纸在燃料电池气体扩散层中的应用[J].电源技术,2026,50(4):759-765,7.
