dc.creator | Chen Z., Hao C., Yan B., Chen Q., Feng H., Mao X., Cen J., Tian Z.Q., Tsiakaras P., Shen P.K. | en |
dc.date.accessioned | 2023-01-31T07:45:13Z | |
dc.date.available | 2023-01-31T07:45:13Z | |
dc.date.issued | 2022 | |
dc.identifier | 10.1002/aenm.202201600 | |
dc.identifier.issn | 16146832 | |
dc.identifier.uri | http://hdl.handle.net/11615/72785 | |
dc.description.abstract | Traditional calcination usually causes sintering of Pt, which diminishes Pt exposure in proton exchange membrane fuel cell (PEMFC) electrodes. In the present work, a facile self-confined method for synthesizing highly dispersed PtCo-alloy on Co, N co-doped mesoporous carbon (PCN-MC) is developed via a dual-template strategy. Owing to the co-confined effect of Zn in the bimetallic zeolite-based imidazolate framework (ZIF) and Mg(OH)2 template, ultra-fine 2.7 nm PtCo-alloy with 2–3 atomic-layer Pt-skin nanoparticles are obtained. By adjusting the Co/Zn feeding-ratio in the bimetallic ZIF at 8/7, the alloying degree and nanoparticle size are optimized to achieve an outstanding oxygen reduction reaction activity with a high mass activity (MA) of 0.956 A mgPt−1 in 0.1 m HClO4, about 7.5-fold of that of commercial Pt/C. Furthermore, notable durability is also achieved with 81% retention of the initial MA after 30k cycles conducted between 0.6–1.0 V (versus reversible hydrogen electrode). These features are also verified by a H2–Air fuel cell test with an excellent combination of mass activity, power density, and durability. This strategy provides a feasible route for the large-scale synthesis of highly-dispersed PtCo-alloy catalysts. © 2022 Wiley-VCH GmbH. | en |
dc.language.iso | en | en |
dc.source | Advanced Energy Materials | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133612785&doi=10.1002%2faenm.202201600&partnerID=40&md5=aeb9c5a6edc044f29940959bfff696db | |
dc.subject | Binary alloys | en |
dc.subject | Durability | en |
dc.subject | Electrolytic reduction | en |
dc.subject | Magnesium compounds | en |
dc.subject | Nanoparticles | en |
dc.subject | Oxygen | en |
dc.subject | Platinum alloys | en |
dc.subject | Proton exchange membrane fuel cells (PEMFC) | en |
dc.subject | Sintering | en |
dc.subject | Zeolites | en |
dc.subject | Bimetallic zeolite | en |
dc.subject | Bimetallic ZIF | en |
dc.subject | Bimetallics | en |
dc.subject | Dual templates | en |
dc.subject | Imidazolate | en |
dc.subject | Mass activity | en |
dc.subject | Oxygen reduction reaction | en |
dc.subject | Pt-Co alloys | en |
dc.subject | Pt-Co nanoparticles | en |
dc.subject | Self-confinement | en |
dc.subject | Electrodes | en |
dc.subject | John Wiley and Sons Inc | en |
dc.title | ZIF-Mg(OH)2 Dual Template Assisted Self-Confinement of Small PtCo NPs as Promising Oxygen Reduction Reaction in PEM Fuel Cell | en |
dc.type | journalArticle | en |