Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes
Oxygen reduction reaction (ORR) kinetics was investigated on dense La₀.₈Sr₀.₂MnO₃ microelectrodes as a function of temperature and microelectrode thickness using electrochemical impedance spectroscopy. The surface oxygen exchange and mixed bulk/three-phase-boundary (TPB) charge transfer process were...
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| Format: | Article |
| Language: | en_US |
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Electrochemical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/79101 |
| _version_ | 1826188652658556928 |
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| author | La O', Gerardo Jose Cordova Shao-Horn, Yang |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering La O', Gerardo Jose Cordova Shao-Horn, Yang |
| author_sort | La O', Gerardo Jose Cordova |
| collection | MIT |
| description | Oxygen reduction reaction (ORR) kinetics was investigated on dense La₀.₈Sr₀.₂MnO₃ microelectrodes as a function of temperature and microelectrode thickness using electrochemical impedance spectroscopy. The surface oxygen exchange and mixed bulk/three-phase-boundary (TPB) charge transfer process were found to control ORR kinetics at high and low temperatures, respectively. The transition temperature from the mixed bulk/TPB charge transfer control to surface oxygen exchange was found to be highly dependent on the microelectrode thickness (~600degrees C for 65 nm vs ~800degreesC for 705 nm). These findings can be used to guide the design of electrodes that can operate at intermediate temperatures. |
| first_indexed | 2024-09-23T08:02:39Z |
| format | Article |
| id | mit-1721.1/79101 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:02:39Z |
| publishDate | 2013 |
| publisher | Electrochemical Society |
| record_format | dspace |
| spelling | mit-1721.1/791012022-09-23T10:30:30Z Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes La O', Gerardo Jose Cordova Shao-Horn, Yang Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Electrochemical Energy Laboratory La O', Gerardo Jose Cordova Shao-Horn, Yang Oxygen reduction reaction (ORR) kinetics was investigated on dense La₀.₈Sr₀.₂MnO₃ microelectrodes as a function of temperature and microelectrode thickness using electrochemical impedance spectroscopy. The surface oxygen exchange and mixed bulk/three-phase-boundary (TPB) charge transfer process were found to control ORR kinetics at high and low temperatures, respectively. The transition temperature from the mixed bulk/TPB charge transfer control to surface oxygen exchange was found to be highly dependent on the microelectrode thickness (~600degrees C for 65 nm vs ~800degreesC for 705 nm). These findings can be used to guide the design of electrodes that can operate at intermediate temperatures. National Science Foundation (U.S.) (Materials Research Science and Engineering Center (MRSEC) Program, Award DMR-0819762) National Science Foundation (U.S.) (NSF grant no. CBET-0844526) 2013-06-13T19:51:24Z 2013-06-13T19:51:24Z 2009-03 2009-02 Article http://purl.org/eprint/type/JournalArticle 1099-0062 http://hdl.handle.net/1721.1/79101 la O’, G. J., and Y. Shao-Horn. Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes. Electrochemical and Solid-State Letters 12, no. 5 (2009): B82. © 2009 by ECS -- The Electrochemical Society. en_US http://dx.doi.org/10.1149/1.3095681 Electrochemical and Solid-State Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Electrochemical Society MIT web domain |
| spellingShingle | La O', Gerardo Jose Cordova Shao-Horn, Yang Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes |
| title | Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes |
| title_full | Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes |
| title_fullStr | Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes |
| title_full_unstemmed | Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes |
| title_short | Thickness Dependence of Oxygen Reduction Reaction Kinetics on Strontium-Substituted Lanthanum Manganese Perovskite Thin-Film Microelectrodes |
| title_sort | thickness dependence of oxygen reduction reaction kinetics on strontium substituted lanthanum manganese perovskite thin film microelectrodes |
| url | http://hdl.handle.net/1721.1/79101 |
| work_keys_str_mv | AT laogerardojosecordova thicknessdependenceofoxygenreductionreactionkineticsonstrontiumsubstitutedlanthanummanganeseperovskitethinfilmmicroelectrodes AT shaohornyang thicknessdependenceofoxygenreductionreactionkineticsonstrontiumsubstitutedlanthanummanganeseperovskitethinfilmmicroelectrodes |