Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH
Perovskite oxides (ABO[subscript 3]) have been studied extensively to promote the kinetics of the oxygen evolution reaction (OER) in alkaline electrolytes. However, developing highly active catalysts for OER at near-neutral pH is desirable for many photoelectrochemical/electrochemical devices. In th...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Royal Society of Chemistry, The
2017
|
| Online Access: | http://hdl.handle.net/1721.1/109591 https://orcid.org/0000-0002-2919-3235 https://orcid.org/0000-0003-2820-7006 https://orcid.org/0000-0003-2477-6412 |
| _version_ | 1826193546518986752 |
|---|---|
| author | Ling, Chen Jia, Hongfei Han, Binghong Risch, Marcel Lee, Yueh Lin Shao-Horn, Yang |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Ling, Chen Jia, Hongfei Han, Binghong Risch, Marcel Lee, Yueh Lin Shao-Horn, Yang |
| author_sort | Ling, Chen |
| collection | MIT |
| description | Perovskite oxides (ABO[subscript 3]) have been studied extensively to promote the kinetics of the oxygen evolution reaction (OER) in alkaline electrolytes. However, developing highly active catalysts for OER at near-neutral pH is desirable for many photoelectrochemical/electrochemical devices. In this paper, we systematically studied the activity and stability of well-known perovskite oxides for OER at pH 7. Previous activity descriptors established for perovskite oxides at pH 13, such as having an e[subscript g] occupancy close to unity or having an O p-band center close to Fermi level, were shown to scale with OER activity at pH 7. Stability was a greater challenge at pH 7 than at pH 13, where two different modes of instability were identified from combined transmission electron microscopy and density functional theory analyses. Perovskites with O p-band close to Fermi level showed leaching of A-site atoms and surface amorphization under all overpotentials examined at pH 7, while those with O p-band far from Fermi level were stable under low OER current/potential but became unstable at high current/potential accompanied by leaching of B-site atoms. Therefore, efforts are needed to enhance the activity and stability of perovskites against A-site or B-site loss if used at neutral pH. |
| first_indexed | 2024-09-23T09:40:50Z |
| format | Article |
| id | mit-1721.1/109591 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:40:50Z |
| publishDate | 2017 |
| publisher | Royal Society of Chemistry, The |
| record_format | dspace |
| spelling | mit-1721.1/1095912022-09-30T16:08:50Z Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH Ling, Chen Jia, Hongfei Han, Binghong Risch, Marcel Lee, Yueh Lin Shao-Horn, Yang Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Electrochemical Energy Laboratory Massachusetts Institute of Technology. Research Laboratory of Electronics Shao-Horn, Yang Han, Binghong Risch, Marcel Lee, Yueh Lin Shao-Horn, Yang Perovskite oxides (ABO[subscript 3]) have been studied extensively to promote the kinetics of the oxygen evolution reaction (OER) in alkaline electrolytes. However, developing highly active catalysts for OER at near-neutral pH is desirable for many photoelectrochemical/electrochemical devices. In this paper, we systematically studied the activity and stability of well-known perovskite oxides for OER at pH 7. Previous activity descriptors established for perovskite oxides at pH 13, such as having an e[subscript g] occupancy close to unity or having an O p-band center close to Fermi level, were shown to scale with OER activity at pH 7. Stability was a greater challenge at pH 7 than at pH 13, where two different modes of instability were identified from combined transmission electron microscopy and density functional theory analyses. Perovskites with O p-band close to Fermi level showed leaching of A-site atoms and surface amorphization under all overpotentials examined at pH 7, while those with O p-band far from Fermi level were stable under low OER current/potential but became unstable at high current/potential accompanied by leaching of B-site atoms. Therefore, efforts are needed to enhance the activity and stability of perovskites against A-site or B-site loss if used at neutral pH. National Science Foundation (U.S.). Materials Research Science and Engineering Centers (Program) (ward number DMR-1419807) 2017-06-05T16:50:04Z 2017-06-05T16:50:04Z 2015-08 2015-07 Article http://purl.org/eprint/type/JournalArticle 1463-9076 1463-9084 http://hdl.handle.net/1721.1/109591 Han, Binghong, Marcel Risch, Yueh-Lin Lee, Chen Ling, Hongfei Jia, and Yang Shao-Horn. “Activity and Stability Trends of Perovskite Oxides for Oxygen Evolution Catalysis at Neutral pH.” Phys. Chem. Chem. Phys. 17, no. 35 (2015): 22576–22580. https://orcid.org/0000-0002-2919-3235 https://orcid.org/0000-0003-2820-7006 https://orcid.org/0000-0003-2477-6412 en_US http://dx.doi.org/10.1039/c5cp04248h Phys. Chem. Chem. Phys. Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Royal Society of Chemistry, The Prof. Shao-Horn via Angie Locknar |
| spellingShingle | Ling, Chen Jia, Hongfei Han, Binghong Risch, Marcel Lee, Yueh Lin Shao-Horn, Yang Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH |
| title | Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH |
| title_full | Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH |
| title_fullStr | Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH |
| title_full_unstemmed | Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH |
| title_short | Activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral pH |
| title_sort | activity and stability trends of perovskite oxides for oxygen evolution catalysis at neutral ph |
| url | http://hdl.handle.net/1721.1/109591 https://orcid.org/0000-0002-2919-3235 https://orcid.org/0000-0003-2820-7006 https://orcid.org/0000-0003-2477-6412 |
| work_keys_str_mv | AT lingchen activityandstabilitytrendsofperovskiteoxidesforoxygenevolutioncatalysisatneutralph AT jiahongfei activityandstabilitytrendsofperovskiteoxidesforoxygenevolutioncatalysisatneutralph AT hanbinghong activityandstabilitytrendsofperovskiteoxidesforoxygenevolutioncatalysisatneutralph AT rischmarcel activityandstabilitytrendsofperovskiteoxidesforoxygenevolutioncatalysisatneutralph AT leeyuehlin activityandstabilitytrendsofperovskiteoxidesforoxygenevolutioncatalysisatneutralph AT shaohornyang activityandstabilitytrendsofperovskiteoxidesforoxygenevolutioncatalysisatneutralph |