| EPSRC Reference: |
GR/R13272/01 |
| Title: |
Novel High Voltage Solid State Redox Phenomena In Lithium Oxide Spinels |
| Principal Investigator: |
West, Professor AR |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Materials Science and Engineering |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 June 2001 |
Ends: |
31 March 2003 |
Value (£): |
221,063
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Synthesis & Growth |
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| EPSRC Industrial Sector Classifications: |
| Chemicals |
Energy |
| Transport Systems and Vehicles |
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Summary on Grant Application Form |
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We have recently found that LiCoMnO4 and related materials can operate as reversible cathodes in prototype high voltage lithium batteries. LiCoMnO4 can reversibly deintercalate and intercalate almost 1 mole of Li at a potential of ca 5 volts vs Li/Li+ for (90% of the charge-discharge process. Novel redox phenomena are involved and there is some preliminary evidence for the O2-/O- redox couple in addition to the expected Mn3+/Mn4+ and Co3+/Co4+ couples. Work is proposed to characterise the composition, structure and properties of 'LiCoMnO4', including in situ studies during charge/discharge, to understand the redox chemistry responsible for the unprecedentedly high voltages that are obtained, to optimise the high voltage performance by materials processing and/or doping and to replace Co and/or Mn, at least partially, by Fe so as to achieve comparable electrochemical performance in lower cost materials.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.shef.ac.uk |