Perovskite-Carbon Joint Substrate for Practical Application in Proton Exchange Membrane Fuel Cells under Low-Humidity/High-Temperature Conditions
Article
Article Title | Perovskite-Carbon Joint Substrate for Practical Application in |
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ERA Journal ID | 40638 |
Article Category | Article |
Authors | Zhang, Jun (Author), Hu, Bin (Author), Deng, Xiang (Author), Li, Chen (Author), Wu, Yusun (Author), Zhou, Chuan (Author), Zhang, Dezhu (Author), Ge, Lei (Author), Zhou, Wei (Author) and Shao, Zongping (Author) |
Journal Title | ACS Applied Materials and Interfaces |
Journal Citation | 14 (27), pp. 30872-30880 |
Number of Pages | 9 |
Year | 2022 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1944-8244 |
1944-8252 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.2c06259 |
Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsami.2c06259 |
Abstract | Highly active catalysts with promising water retention are favorable for proton exchange membrane fuel cells (PEMFCs) operating under low-humidity/high-temperature conditions. When PEMFCs operate under low-humidity/high-temperature conditions, performance attenuation rapidly occurs owing to reduced proton conductivity of dehydrated membrane electrode assemblies. Herein, we load platinum onto a perovskite-carbon joint substrate (BaZr0.1Ce0.7Y0.1Yb0.1O3-σ-XC-72R) to construct a highly active and durable catalyst with good water retention capacity. We propose that the Pt/(BZCYYb-C) catalyst layer at cathode can promote the water back diffusion of produced water from the cathode to the membrane, thus preventing the decay of fuel-cell performance under low-humidity/high-temperature conditions. The catalyst exhibited outstanding mass activity of 0.542 A mgpt–1 at 0.9 V vs RHE. PEMFCs with such a catalyst delivered very high peak power densities (1.70/1.14 W cm–2 under H2–O2/air conditions at 70 °C) and kept 85.3%/92.1% of initial performance values under low-humidity/high-temperature conditions (relative humidity 60%@70 °C/100 °C). |
Keywords | proton exchange membrane fuel cells; perovskite; water retention capacity; water back diffusion; low-humidity/high-temperature |
ANZSRC Field of Research 2020 | 340301. Inorganic materials (incl. nanomaterials) |
400404. Electrochemical energy storage and conversion | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing Tech University, China |
Sinosteel, China | |
Centre for Future Materials | |
Nanjing University of Technology, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q779x/perovskite-carbon-joint-substrate-for-practical-application-in-proton-exchange-membrane-fuel-cells-under-low-humidity-high-temperature-conditions
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