Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks
Abstract
Achieving high catalytic performance with the lowest possible amount of platinum is critical for fuel cell cost reduction. Here we describe a method of preparing highly active yet stable electrocatalysts containing ultralow-loading platinum content by using cobalt or bimetallic cobalt and zinc zeolitic imidazolate frameworks as precursors. Synergistic catalysis between strained platinum-cobalt core-shell nanoparticles over a platinum-group metal (PGM)–free catalytic substrate led to excellent fuel cell performance under 1 atmosphere of O 2 or air at both high-voltage and high-current domains. Two catalysts achieved oxygen reduction reaction (ORR) mass activities of 1.08 amperes per milligram of platinum (A mg Pt −1 ) and 1.77 A mg Pt −1 and retained 64% and 15% of initial values after 30,000 voltage cycles in a fuel cell. Computational modeling reveals that the interaction between platinum-cobalt nanoparticles and PGM-free sites improves ORR activity and durability.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)
- OSTI Identifier:
- 1485751
- Alternate Identifier(s):
- OSTI ID: 1493886
- Grant/Contract Number:
- AC02-06CH11357; AC02-05CH11231; SC0010379; SC0014664
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Science
- Additional Journal Information:
- Journal Name: Science Journal Volume: 362 Journal Issue: 6420; Journal ID: ISSN 0036-8075
- Publisher:
- American Association for the Advancement of Science (AAAS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; fuel cell; catalyst; platinum; ultralow; PGM-free
Citation Formats
Chong, Lina, Wen, Jianguo, Kubal, Joseph, Sen, Fatih G., Zou, Jianxin, Greeley, Jeffery, Chan, Maria, Barkholtz, Heather, Ding, Wenjiang, and Liu, Di-Jia. Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks. United States: N. p., 2018.
Web. doi:10.1126/science.aau0630.
Chong, Lina, Wen, Jianguo, Kubal, Joseph, Sen, Fatih G., Zou, Jianxin, Greeley, Jeffery, Chan, Maria, Barkholtz, Heather, Ding, Wenjiang, & Liu, Di-Jia. Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks. United States. https://doi.org/10.1126/science.aau0630
Chong, Lina, Wen, Jianguo, Kubal, Joseph, Sen, Fatih G., Zou, Jianxin, Greeley, Jeffery, Chan, Maria, Barkholtz, Heather, Ding, Wenjiang, and Liu, Di-Jia. 2018.
"Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks". United States. https://doi.org/10.1126/science.aau0630.
@article{osti_1485751,
title = {Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks},
author = {Chong, Lina and Wen, Jianguo and Kubal, Joseph and Sen, Fatih G. and Zou, Jianxin and Greeley, Jeffery and Chan, Maria and Barkholtz, Heather and Ding, Wenjiang and Liu, Di-Jia},
abstractNote = {Achieving high catalytic performance with the lowest possible amount of platinum is critical for fuel cell cost reduction. Here we describe a method of preparing highly active yet stable electrocatalysts containing ultralow-loading platinum content by using cobalt or bimetallic cobalt and zinc zeolitic imidazolate frameworks as precursors. Synergistic catalysis between strained platinum-cobalt core-shell nanoparticles over a platinum-group metal (PGM)–free catalytic substrate led to excellent fuel cell performance under 1 atmosphere of O 2 or air at both high-voltage and high-current domains. Two catalysts achieved oxygen reduction reaction (ORR) mass activities of 1.08 amperes per milligram of platinum (A mg Pt −1 ) and 1.77 A mg Pt −1 and retained 64% and 15% of initial values after 30,000 voltage cycles in a fuel cell. Computational modeling reveals that the interaction between platinum-cobalt nanoparticles and PGM-free sites improves ORR activity and durability.},
doi = {10.1126/science.aau0630},
url = {https://www.osti.gov/biblio/1485751},
journal = {Science},
issn = {0036-8075},
number = 6420,
volume = 362,
place = {United States},
year = {Thu Nov 08 00:00:00 EST 2018},
month = {Thu Nov 08 00:00:00 EST 2018}
}
Web of Science
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