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Engineering phosphorus-doped LaFeO3-δ perovskite oxide as robust bifunctional oxygen electrocatalysts in alkaline solutions
Li Z.2; Lv L.2; Wang J.2; Ao X.2; Ruan Y.2; Zha D.2; Hong G.3; Wu Q.1; Lan Y.6; Wang C.2; Jiang J.2; Liu M.4
2018-05-01
Source PublicationNano Energy
ISSN22112855
Volume47Pages:199-209
Abstract

The strong desire for a clean and secure energy future has stimulated great interest in searching for low-cost, highly efficient electrocatalysts for regenerative fuel cells and rechargeable metal-air batteries. Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) play a paramount role in the operation of these devices, but are notoriously sluggish even with precious metals-based catalysts. Here we report our findings in the development of a bifunctional catalyst based on phosphorus-doped LaFeO for ORR and OER in alkaline solutions. The remarkable electrocatalytic performance is attributed to larger amount of O/O species, trace amount of Fe species, and optimized e electron filling (≈ 1), benefiting from the doping effect of phosphorus. Both the mass activity and the specific activity are nearly doubled after P-doping. Density functional theory calculations also confirm that the increase in valence state of Fe ions is due mainly to phosphorus doping. These results demonstrate that non-metal element doping is an effective approach to optimizing the electronic configuration, changing valence states of ions, and thus enhancing activities of perovskite electrocatalysts.

KeywordElectrocatalysis Oxygen Evolution Oxygen Reduction Perovskite Oxide Phosphorus
DOI10.1016/j.nanoen.2018.02.051
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000430057000020
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Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.Quanzhou Normal University
2.Huazhong University of Science and Technology
3.Universidade de Macau
4.Georgia Institute of Technology
5.Chinese Academy of Sciences
6.Morgan State University
Recommended Citation
GB/T 7714
Li Z.,Lv L.,Wang J.,et al. Engineering phosphorus-doped LaFeO3-δ perovskite oxide as robust bifunctional oxygen electrocatalysts in alkaline solutions[J]. Nano Energy,2018,47:199-209.
APA Li Z..,Lv L..,Wang J..,Ao X..,Ruan Y..,...&Liu M..(2018).Engineering phosphorus-doped LaFeO3-δ perovskite oxide as robust bifunctional oxygen electrocatalysts in alkaline solutions.Nano Energy,47,199-209.
MLA Li Z.,et al."Engineering phosphorus-doped LaFeO3-δ perovskite oxide as robust bifunctional oxygen electrocatalysts in alkaline solutions".Nano Energy 47(2018):199-209.
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