Water Splitting with an Enhanced Bifunctional Double Perovskite
© 2017 American Chemical Society. The rational design of highly active and durable electrocatalysts for overall water splitting is a formidable challenge. In this work, a double perovskite oxide, i.e., NdBaMn 2 O 5.5 , is proposed as a bifunctional electrode material for water electrolysis. Layered...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/65636 |
| _version_ | 1848761171578978304 |
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| author | Wang, J. Gao, Y. Chen, D. Liu, J. Zhang, Z. Shao, Zongping Ciucci, F. |
| author_facet | Wang, J. Gao, Y. Chen, D. Liu, J. Zhang, Z. Shao, Zongping Ciucci, F. |
| author_sort | Wang, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 American Chemical Society. The rational design of highly active and durable electrocatalysts for overall water splitting is a formidable challenge. In this work, a double perovskite oxide, i.e., NdBaMn 2 O 5.5 , is proposed as a bifunctional electrode material for water electrolysis. Layered NdBaMn 2 O 5.5 demonstrates significant improvement in catalyzing oxygen and hydrogen evolution reactions (OER and HER, respectively), in contrast to other related materials, including disordered Nd 0.5 Ba 0.5 MnO 3-d as well as NdBaMn 2 O 5.5-d and NdBaMn 2 O 5.5+d (d < 0.5). Importantly, NdBaMn 2 O 5.5 has an OER intrinsic activity (~24 times) and a mass activity (~2.5 times) much higher than those of the benchmark RuO 2 at 1.7 V versus the reversible hydrogen electrode. In addition, NdBaMn 2 O 5.5 achieves a better overall water splitting activity at large potentials ( > 1.75 V) and catalytic durability in comparison to those of Pt/C-RuO 2 , making it a promising candidate electrode material for water electrolyzers. The substantially enhanced performance is attributed to the approximately half-filled e g orbit occupancy, optimized O p-band center location, and distorted structure. Interestingly, for the investigated perovskite oxides, OER and HER activity seem to be correlated; i.e., the material achieving a higher OER activity is also more active in catalyzing HER. |
| first_indexed | 2025-11-14T10:27:26Z |
| format | Journal Article |
| id | curtin-20.500.11937-65636 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:27:26Z |
| publishDate | 2018 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-656362018-02-19T08:06:42Z Water Splitting with an Enhanced Bifunctional Double Perovskite Wang, J. Gao, Y. Chen, D. Liu, J. Zhang, Z. Shao, Zongping Ciucci, F. © 2017 American Chemical Society. The rational design of highly active and durable electrocatalysts for overall water splitting is a formidable challenge. In this work, a double perovskite oxide, i.e., NdBaMn 2 O 5.5 , is proposed as a bifunctional electrode material for water electrolysis. Layered NdBaMn 2 O 5.5 demonstrates significant improvement in catalyzing oxygen and hydrogen evolution reactions (OER and HER, respectively), in contrast to other related materials, including disordered Nd 0.5 Ba 0.5 MnO 3-d as well as NdBaMn 2 O 5.5-d and NdBaMn 2 O 5.5+d (d < 0.5). Importantly, NdBaMn 2 O 5.5 has an OER intrinsic activity (~24 times) and a mass activity (~2.5 times) much higher than those of the benchmark RuO 2 at 1.7 V versus the reversible hydrogen electrode. In addition, NdBaMn 2 O 5.5 achieves a better overall water splitting activity at large potentials ( > 1.75 V) and catalytic durability in comparison to those of Pt/C-RuO 2 , making it a promising candidate electrode material for water electrolyzers. The substantially enhanced performance is attributed to the approximately half-filled e g orbit occupancy, optimized O p-band center location, and distorted structure. Interestingly, for the investigated perovskite oxides, OER and HER activity seem to be correlated; i.e., the material achieving a higher OER activity is also more active in catalyzing HER. 2018 Journal Article http://hdl.handle.net/20.500.11937/65636 10.1021/acscatal.7b02650 American Chemical Society restricted |
| spellingShingle | Wang, J. Gao, Y. Chen, D. Liu, J. Zhang, Z. Shao, Zongping Ciucci, F. Water Splitting with an Enhanced Bifunctional Double Perovskite |
| title | Water Splitting with an Enhanced Bifunctional Double Perovskite |
| title_full | Water Splitting with an Enhanced Bifunctional Double Perovskite |
| title_fullStr | Water Splitting with an Enhanced Bifunctional Double Perovskite |
| title_full_unstemmed | Water Splitting with an Enhanced Bifunctional Double Perovskite |
| title_short | Water Splitting with an Enhanced Bifunctional Double Perovskite |
| title_sort | water splitting with an enhanced bifunctional double perovskite |
| url | http://hdl.handle.net/20.500.11937/65636 |