“Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion
Elastic strain engineering offers a new route to enable high-performance catalysts, electrochemical energy conversion devices, separation membranes and memristors. By applying mechanical stress, the inherent energy landscape of reactions involved in the material can be altered. This is the so-called...
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| Format: | Article |
| Language: | en_US |
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Cambridge University Press/Materials Research Society
2015
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| Online Access: | http://hdl.handle.net/1721.1/96015 https://orcid.org/0000-0002-2688-5666 |
| _version_ | 1826211171390193664 |
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| author | Yildiz, Bilge |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Yildiz, Bilge |
| author_sort | Yildiz, Bilge |
| collection | MIT |
| description | Elastic strain engineering offers a new route to enable high-performance catalysts, electrochemical energy conversion devices, separation membranes and memristors. By applying mechanical stress, the inherent energy landscape of reactions involved in the material can be altered. This is the so-called mechano-chemical coupling. Here we discuss how elastic strain activates reactions on metals and oxides. We also present analogies to strained polymer reactions. A rich set of investigations have been performed on strained metal surfaces over the last 15 years, and the mechanistic reasons behind strain-induced reactivity are explained by an electronic structure model. On the other hand, the potential of strain engineering of oxides for catalytic and energy applications has been largely underexplored. In oxides, mechanical stress couples to reaction and diffusion kinetics by altering the oxygen defect formation enthalpy, migration energy barrier, adsorption energy, dissociation barrier, and charge transfer barrier. A generalization of the principles for stress activated reactions from polymers to metals to oxides is offered, and the prospect of using elastic strain to tune reaction and diffusion kinetics in functional oxides is discussed. |
| first_indexed | 2024-09-23T15:01:42Z |
| format | Article |
| id | mit-1721.1/96015 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:01:42Z |
| publishDate | 2015 |
| publisher | Cambridge University Press/Materials Research Society |
| record_format | dspace |
| spelling | mit-1721.1/960152022-10-02T00:02:54Z “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion Yildiz, Bilge Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Yildiz, Bilge Elastic strain engineering offers a new route to enable high-performance catalysts, electrochemical energy conversion devices, separation membranes and memristors. By applying mechanical stress, the inherent energy landscape of reactions involved in the material can be altered. This is the so-called mechano-chemical coupling. Here we discuss how elastic strain activates reactions on metals and oxides. We also present analogies to strained polymer reactions. A rich set of investigations have been performed on strained metal surfaces over the last 15 years, and the mechanistic reasons behind strain-induced reactivity are explained by an electronic structure model. On the other hand, the potential of strain engineering of oxides for catalytic and energy applications has been largely underexplored. In oxides, mechanical stress couples to reaction and diffusion kinetics by altering the oxygen defect formation enthalpy, migration energy barrier, adsorption energy, dissociation barrier, and charge transfer barrier. A generalization of the principles for stress activated reactions from polymers to metals to oxides is offered, and the prospect of using elastic strain to tune reaction and diffusion kinetics in functional oxides is discussed. National Science Foundation (U.S.) (NSF CAREER award, Division of Materials Research, Ceramics Program, Grant No.1055583)) United States. Dept. of Energy (Office of Science, Basic Energy Sciences, Grant No. DE-SC0002633) 2015-03-13T17:55:38Z 2015-03-13T17:55:38Z 2014-02 Article http://purl.org/eprint/type/JournalArticle 0883-7694 1938-1425 http://hdl.handle.net/1721.1/96015 Yildiz, Bilge. “‘Stretching’ the Energy Landscape of oxides—Effects on Electrocatalysis and Diffusion.” MRS Bulletin 39, no. 02 (February 2014): 147–156. © 2014 Materials Research Society. https://orcid.org/0000-0002-2688-5666 en_US http://dx.doi.org/10.1557/mrs.2014.8 MRS Bulletin 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 Cambridge University Press/Materials Research Society MIT web domain |
| spellingShingle | Yildiz, Bilge “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion |
| title | “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion |
| title_full | “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion |
| title_fullStr | “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion |
| title_full_unstemmed | “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion |
| title_short | “Stretching” the energy landscape of oxides—Effects on electrocatalysis and diffusion |
| title_sort | stretching the energy landscape of oxides effects on electrocatalysis and diffusion |
| url | http://hdl.handle.net/1721.1/96015 https://orcid.org/0000-0002-2688-5666 |
| work_keys_str_mv | AT yildizbilge stretchingtheenergylandscapeofoxideseffectsonelectrocatalysisanddiffusion |