Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis
The electrochemical behavior of ZnTe and CdTe compound semiconductors dissolved in molten ZnCl[subscript 2] and equimolar CdCl[subscript 2]–KCl, respectively, was examined. In these melts dissolved Te is present as the divalent telluride anion, Te[superscript 2–], which was found able to be converte...
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| Format: | Article |
| Language: | en_US |
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American Chemical Society (ACS)
2013
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| Online Access: | http://hdl.handle.net/1721.1/80306 |
| _version_ | 1811072690955485184 |
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| author | Osswald, Sebastian Wei, Weifeng Ceder, Gerbrand Bradwell, David Johnathon Barriga, Salvador Aguilar Sadoway, Donald Robert |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Osswald, Sebastian Wei, Weifeng Ceder, Gerbrand Bradwell, David Johnathon Barriga, Salvador Aguilar Sadoway, Donald Robert |
| author_sort | Osswald, Sebastian |
| collection | MIT |
| description | The electrochemical behavior of ZnTe and CdTe compound semiconductors dissolved in molten ZnCl[subscript 2] and equimolar CdCl[subscript 2]–KCl, respectively, was examined. In these melts dissolved Te is present as the divalent telluride anion, Te[superscript 2–], which was found able to be converted to elemental metal by electrochemical oxidation at the anode. ZnTe–ZnCl[subscript 2] melts were studied at 500 °C by standard electrochemical techniques. On the basis of these results, electrolysis was performed, resulting in the simultaneous extraction of phase-pure liquid Zn at the cathode and phase-pure liquid Te at the anode. This new process, involving the simultaneous deposition of liquid metals at electrodes of opposite polarity, is termed herein as ambipolar electrolysis. A melt consisting of CdTe dissolved in equimolar CdCl[subscript 2]–KCl was processed by ambipolar electrolysis, resulting in the production of liquid Cd at the cathode and liquid Te at the anode. Ambipolar electrolysis could enable new approaches to recycling compound semiconductors and semiconductor devices, such as CdTe solar cells. |
| first_indexed | 2024-09-23T09:10:18Z |
| format | Article |
| id | mit-1721.1/80306 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:10:18Z |
| publishDate | 2013 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/803062022-09-30T13:53:07Z Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis Osswald, Sebastian Wei, Weifeng Ceder, Gerbrand Bradwell, David Johnathon Barriga, Salvador Aguilar Sadoway, Donald Robert Massachusetts Institute of Technology. Department of Materials Science and Engineering Ceder, Gerbrand Bradwell, David Johnathon Osswald, Sebastian Wei, Weifeng Barriga, Salvador Aguilar Ceder, Gerbrand Sadoway, Donald Robert The electrochemical behavior of ZnTe and CdTe compound semiconductors dissolved in molten ZnCl[subscript 2] and equimolar CdCl[subscript 2]–KCl, respectively, was examined. In these melts dissolved Te is present as the divalent telluride anion, Te[superscript 2–], which was found able to be converted to elemental metal by electrochemical oxidation at the anode. ZnTe–ZnCl[subscript 2] melts were studied at 500 °C by standard electrochemical techniques. On the basis of these results, electrolysis was performed, resulting in the simultaneous extraction of phase-pure liquid Zn at the cathode and phase-pure liquid Te at the anode. This new process, involving the simultaneous deposition of liquid metals at electrodes of opposite polarity, is termed herein as ambipolar electrolysis. A melt consisting of CdTe dissolved in equimolar CdCl[subscript 2]–KCl was processed by ambipolar electrolysis, resulting in the production of liquid Cd at the cathode and liquid Te at the anode. Ambipolar electrolysis could enable new approaches to recycling compound semiconductors and semiconductor devices, such as CdTe solar cells. Deshpande Center for Technological Innovation Chesonis Family Foundation 2013-08-27T17:04:02Z 2013-08-27T17:04:02Z 2011-10 2011-09 Article http://purl.org/eprint/type/JournalArticle 0002-7863 1520-5126 http://hdl.handle.net/1721.1/80306 Bradwell, David J., Sebastian Osswald, Weifeng Wei, Salvador A. Barriga, Gerbrand Ceder, and Donald R. Sadoway. “Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis.” Journal of the American Chemical Society 133, no. 49 (December 14, 2011): 19971-19975. en_US http://dx.doi.org/10.1021/ja208577j Journal of the American 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 (ACS) Prof. Ceder via Angie Locknar |
| spellingShingle | Osswald, Sebastian Wei, Weifeng Ceder, Gerbrand Bradwell, David Johnathon Barriga, Salvador Aguilar Sadoway, Donald Robert Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis |
| title | Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis |
| title_full | Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis |
| title_fullStr | Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis |
| title_full_unstemmed | Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis |
| title_short | Recycling ZnTe, CdTe, and Other Compound Semiconductors by Ambipolar Electrolysis |
| title_sort | recycling znte cdte and other compound semiconductors by ambipolar electrolysis |
| url | http://hdl.handle.net/1721.1/80306 |
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