Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries
PtAu nanoparticles (NPs) were shown to strongly enhance the kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in rechargeable Li−O2 cells. Li−O2 cells with PtAu/C were found to exhibit the highest round-trip efficiency reported to date. During ORR via xLi+ + O2 + xe...
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| Language: | en_US |
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American Chemical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/65124 https://orcid.org/0000-0001-7746-5920 https://orcid.org/0000-0001-8199-8703 https://orcid.org/0000-0002-5732-663X |
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| author | Lu, Yi-Chun Xu, Zhichuan Gasteiger, Hubert A. Chen, Shuo Hamad-Schifferli, Kimberly Shao-Horn, Yang |
| author2 | Massachusetts Institute of Technology. Department of Biological Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Biological Engineering Lu, Yi-Chun Xu, Zhichuan Gasteiger, Hubert A. Chen, Shuo Hamad-Schifferli, Kimberly Shao-Horn, Yang |
| author_sort | Lu, Yi-Chun |
| collection | MIT |
| description | PtAu nanoparticles (NPs) were shown to strongly enhance the kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in rechargeable Li−O2 cells. Li−O2 cells with PtAu/C were found to exhibit the highest round-trip efficiency reported to date. During ORR via xLi+ + O2 + xe− → LixO2, the discharge voltage with PtAu/C was considerably higher than that of pure carbon and comparable to that of Au/C. During OER via LixO2 → xLi+ + O2 + xe−, the charge voltages with PtAu/C fell in the range from 3.4 to 3.8 VLi, which is slightly lower than obtained with Pt. It is hypothesized that PtAu NPs exhibit bifunctional catalytic activity, having surface Au and Pt atoms primarily responsible for ORR and OER kinetics in Li−O2 cells, respectively. |
| first_indexed | 2024-09-23T14:49:42Z |
| format | Article |
| id | mit-1721.1/65124 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:49:42Z |
| publishDate | 2011 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | mit-1721.1/651242022-10-01T22:42:33Z Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries Lu, Yi-Chun Xu, Zhichuan Gasteiger, Hubert A. Chen, Shuo Hamad-Schifferli, Kimberly Shao-Horn, Yang Massachusetts Institute of Technology. Department of Biological Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Hamad-Schifferli, Kimberly Lu, Yi-Chun Xu, Zhichuan Gasteiger, Hubert A. Chen, Shuo Hamad-Schifferli, Kimberly Shao-Horn, Yang PtAu nanoparticles (NPs) were shown to strongly enhance the kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in rechargeable Li−O2 cells. Li−O2 cells with PtAu/C were found to exhibit the highest round-trip efficiency reported to date. During ORR via xLi+ + O2 + xe− → LixO2, the discharge voltage with PtAu/C was considerably higher than that of pure carbon and comparable to that of Au/C. During OER via LixO2 → xLi+ + O2 + xe−, the charge voltages with PtAu/C fell in the range from 3.4 to 3.8 VLi, which is slightly lower than obtained with Pt. It is hypothesized that PtAu NPs exhibit bifunctional catalytic activity, having surface Au and Pt atoms primarily responsible for ORR and OER kinetics in Li−O2 cells, respectively. United States. Dept. of Energy (DE-AC03-76SF00098 with LBNL) National Science Foundation (U.S.) (award DMR-0819762) 2011-08-12T18:03:02Z 2011-08-12T18:03:02Z 2010-06 Article http://purl.org/eprint/type/JournalArticle 0002-7863 1520-5126 http://hdl.handle.net/1721.1/65124 Lu, Yi-Chun et al. “Platinum−Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium−Air Batteries.” Journal of the American Chemical Society 132.35 (2010) : 12170-12171. https://orcid.org/0000-0001-7746-5920 https://orcid.org/0000-0001-8199-8703 https://orcid.org/0000-0002-5732-663X en_US http://dx.doi.org/10.1021/ja1036572 Journal of the Americal Chemical Society 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 American Chemical Society Prof. Hamad-Schifferli |
| spellingShingle | Lu, Yi-Chun Xu, Zhichuan Gasteiger, Hubert A. Chen, Shuo Hamad-Schifferli, Kimberly Shao-Horn, Yang Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries |
| title | Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries |
| title_full | Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries |
| title_fullStr | Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries |
| title_full_unstemmed | Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries |
| title_short | Platinum-Gold Nanoparticles: A Highly Active Bifunctional Electrocatalyst for Rechargeable Lithium-Air Batteries |
| title_sort | platinum gold nanoparticles a highly active bifunctional electrocatalyst for rechargeable lithium air batteries |
| url | http://hdl.handle.net/1721.1/65124 https://orcid.org/0000-0001-7746-5920 https://orcid.org/0000-0001-8199-8703 https://orcid.org/0000-0002-5732-663X |
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