A Universal Strategy to Enhance Polarization Performance and Anode Reversal Tolerance by Polyaniline-Coated Carbon Support for Proton Exchange Membrane Fuel Cells

Li, Zheng1,2,3; Mu, Yongbiao2,3; Zhang, Qing2,3; Xiao, Cailin2,3; Jiang, Yuting1,2,3; Du, Lei4; Ye, Siyu4,5; Zhao, Tianshou1,2,3; Zeng, Lin2,3

2024-10-01

10.1002/advs.202407570

ADVANCED SCIENCE   影响因子和分区

2198-3844

["Anode cell reversal typically leads to severe carbon corrosion and catalyst layer collapse, which significantly compromises the durability of proton exchange membrane fuel cells. Herein, three types of commercial carbon supports with various structures are facilely coated by polyaniline (PANI) and subsequently fabricated into reversal-tolerant anodes (RTAs). Consequently, the optimized PANI-coated catalyst RTAs demonstrate enhanced polarization performance and improved reversal tolerance compared to their uncoated counterparts, thus confirming the universality of this coating strategy. Essentially, the surface engineering introduced by PANI coating incorporates abundant N-groups and enhances coulombic interactions with ionomer side chains, which in turn reduces lower carbon exposure, promotes more uniform Pt deposition, and ensures better ionomer distribution. Accordingly, the membrane-electrode-assembly containing the Pt/PANI/XC-72R-1+IrO2 RTA presents a 100 mV (at 2500 mA cm-2) polarization performance improvement and 26-fold reduction in the degradation rate compared to the uncoated counterpart. This work provides a universal strategy for developing durable anodes and lays the groundwork for the practical fabrication of high-performance, low-degradation RTA.","A universal PANI coating carbon support strategy is developed to decrease carbon exposure and facilitate uniform Pt deposition and ionomer distribution, thus improving polarization performance and anode reversal tolerance for PEMFC. The thickness of PANI coating should be optimized since the over-thick coating will result in mass transfer problems. image"]

Anode catalyst layer Anode reversal Durability Polyaniline-coating carbon support Proton exchange membrane fuel cell

SCI

英语

通讯

Guangdong Basic and Applied Basic Research Foundation[2023B1515120022] ; Shenzhen Key Laboratory of Advanced Energy Storage[ZDSYS20220401141000001] ; High level of special funds[G03034K001] ; Outstanding Youth Project of the Natural Science Foundation of Guangdong Province[2022B1515020020] ; null[52276198]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001322754300001

WILEY

Web of Science

1.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Clear Water Bay, Hong Kong 999077, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen Key Lab Adv Energy Storage, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Shenzhen 518055, Peoples R China
4.Guangzhou Univ, Huangpu Hydrogen Energy Innovat Ctr, Sch Chem & Chem Engn, Guangzhou 510006, Guangdong, Peoples R China
5.SinoHykey Technol Co Ltd, Guangzhou 510760, Guangdong, Peoples R China

Li, Zheng,Mu, Yongbiao,Zhang, Qing,et al. A Universal Strategy to Enhance Polarization Performance and Anode Reversal Tolerance by Polyaniline-Coated Carbon Support for Proton Exchange Membrane Fuel Cells[J]. ADVANCED SCIENCE,2024.

Li, Zheng.,Mu, Yongbiao.,Zhang, Qing.,Xiao, Cailin.,Jiang, Yuting.,...&Zeng, Lin.(2024).A Universal Strategy to Enhance Polarization Performance and Anode Reversal Tolerance by Polyaniline-Coated Carbon Support for Proton Exchange Membrane Fuel Cells.ADVANCED SCIENCE.

Li, Zheng,et al."A Universal Strategy to Enhance Polarization Performance and Anode Reversal Tolerance by Polyaniline-Coated Carbon Support for Proton Exchange Membrane Fuel Cells".ADVANCED SCIENCE (2024).