| EPSRC Reference: |
GR/N30934/01 |
| Title: |
HIGH CAPACITY INTERCALATION MATERIALS AS POSITIVE ELECTRODES FOR RECHARGEABLE LITHIUM BATTERIES |
| Principal Investigator: |
Bruce, Professor P |
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| Department: |
Chemistry |
| Organisation: |
University of St Andrews |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2001 |
Ends: |
31 December 2004 |
Value (£): |
286,204
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Synthesis & Growth |
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| EPSRC Industrial Sector Classifications: |
| Electronics |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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There is a great deal of interest worldwide in discovering lithium manganese oxide based intercalation electrodes that can cycle lithium over a wide composition range and as a result deliver a high capacity to store charge, hence forming the basis of a new generation of high performance rechargeable lithium batteries. We have discovered lithium intercalation materials based on layered LiMn02,lightly doped with for example Co, that can deliver exceptional capacities of approximately 200 mAhg-1 (compared with 130 mAhg-1 for the presently used LiCo02 or 110 mAhg-1 for LiMn204 spinel). These materials transform to a spinel structure on cycling but remarkably they retain the exceptionally high capacity, whereas regular spinel, with the identical composition, fades disastrously in its ability to retain capacity. We seek to understand this difference between the two spinels and as a result to directly prepare new Li-Mn-0 based spinels, analogous to those formed in-situ on cycling and with a high capacity to cycle lithium. We also seek to take the entirely opposite approach to developing improved cathode materials by stabilising the layered structure, thus inhibiting conversion to spinel, so that the potentially attractive properties of LiMn02 based layered compounds may be explored.
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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.st-and.ac.uk |