Water Splitting with an Enhanced Bifunctional Double Perovskite
dc.contributor.author | Wang, J. | |
dc.contributor.author | Gao, Y. | |
dc.contributor.author | Chen, D. | |
dc.contributor.author | Liu, J. | |
dc.contributor.author | Zhang, Z. | |
dc.contributor.author | Shao, Zongping | |
dc.contributor.author | Ciucci, F. | |
dc.date.accessioned | 2018-02-19T07:59:10Z | |
dc.date.available | 2018-02-19T07:59:10Z | |
dc.date.created | 2018-02-19T07:13:36Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Wang, J. and Gao, Y. and Chen, D. and Liu, J. and Zhang, Z. and Shao, Z. and Ciucci, F. 2018. Water Splitting with an Enhanced Bifunctional Double Perovskite. ACS Catalysis. 8 (1): pp. 364-371. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/65636 | |
dc.identifier.doi | 10.1021/acscatal.7b02650 | |
dc.description.abstract |
© 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. | |
dc.publisher | American Chemical Society | |
dc.title | Water Splitting with an Enhanced Bifunctional Double Perovskite | |
dc.type | Journal Article | |
dcterms.source.volume | 8 | |
dcterms.source.number | 1 | |
dcterms.source.startPage | 364 | |
dcterms.source.endPage | 371 | |
dcterms.source.issn | 2155-5435 | |
dcterms.source.title | ACS Catalysis | |
curtin.department | WASM: Minerals, Energy and Chemical Engineering (WASM-MECE) | |
curtin.accessStatus | Fulltext not available |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |