Electrostatic Landscape Design for Ionomer Adhesion and Poison‐Resistant Platinum Catalysis in Fuel Cells
Abstract
Abstract Uneven ionomer distribution and sulfonate groups (–SO 3 – ) poisoning at platinum (Pt) sites significantly impede Pt utilization and local mass transport in proton exchange membrane fuel cells (PEMFCs). Herein, we report an electrostatic landscape design on nanocarbon supports that harnesses strong and uniform ionomer adhesion to create a poison‐resistant Pt interface, effectively mitigating direct poisoning of Pt sites by –SO 3 – groups and enhancing active sites accessibility and local mass transport. The resulting PtFe/FN‐C catalyst exhibits an exceptionally low ionomer coverage of only 6.4%, enabling a peak power density of 1.39 W cm −2 and an oxygen transport resistance of only 44.5 s m −1 in PEMFC testing. Furthermore, it demonstrates impressive durability, with only a 2 mV voltage loss after 30 000 cycles at 0.8 A cm −2 . This work establishes a new principle for interface engineering where overall polymer‐support adhesion governs local catalyst‐functional group interactions, offering a general strategy for designing high‐performance, poison‐resistant electrocatalysts for energy conversion technologies.
Article Details
Authors (10)
Lei Huang
BLSA-ZJU Research Center and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
Huiting Niu
State Key Laboratory of New Textile Materials and Advanced Processing, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST) Wuhan 430074 China
Zifan Tan
School of Chemistry Engineering Research Center of Energy Storage Materials and Devices of Ministry of Education, National Innovation Platform (Center) for Industry‐Education Integration of Energy Storage Technology, Xi'an Jiaotong University Xi'an 710049 China
Ruijuan Qi
Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics
Bingbao Mei
Fei Song
Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute
Ho Seok Park
School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
Ming Zhao
Yaqiong Su
Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education School of Chemistry
Bao Yu Xia
State Key Laboratory of New Textile Materials and Advanced Processing, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering