Combinatorial arrays and parallel screening for positive electrode discovery
Combinatorial arrays and parallel screening for positive electrode discovery
Combinatorial techniques have been applied to the preparation and screening of positive electrode candidates for lithium batteries. This work describes the automated parallel synthesis of 64-electrode arrays using a Packard Multiprobe II liquid handling system. A cell was constructed with a single lithium reference–counter electrode and 64, three-millimeter-diameter working electrodes containing LixMn2O4 active material, PVdF–HFP binder and carbon black as a conducting additive. Eight duplicate electrodes, each of eight respective compositions, were deposited on the array and the mass fraction of carbon was varied in steps from 1 to 25%. The results showed a rapid increase in capacity at the percolation limit of 3% for most cells. Some groups of nominally identical cells showed random variations in capacity, especially at low carbon loadings. The overall result is a demonstration of advantages of the combinatorial concept, which were time-saving and an improved statistical significance of the results compared with on–off experiments.
778-783
Spong, A.D.
f2c0e3e6-d9cb-4139-9909-607aa57eed04
Vitins, G.
f9adaad3-486e-4ca8-be54-9de20bb77609
Hayden, B.E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Russell, A.E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Owen, J.R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
2003
Spong, A.D.
f2c0e3e6-d9cb-4139-9909-607aa57eed04
Vitins, G.
f9adaad3-486e-4ca8-be54-9de20bb77609
Hayden, B.E.
aea74f68-2264-4487-9d84-5b12ddbbb331
Russell, A.E.
b6b7c748-efc1-4d5d-8a7a-8e4b69396169
Owen, J.R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
Spong, A.D., Vitins, G., Hayden, B.E., Russell, A.E. and Owen, J.R.
(2003)
Combinatorial arrays and parallel screening for positive electrode discovery.
Journal of Power Sources, 119-121, .
(doi:10.1016/S0378-7753(03)00252-0).
Abstract
Combinatorial techniques have been applied to the preparation and screening of positive electrode candidates for lithium batteries. This work describes the automated parallel synthesis of 64-electrode arrays using a Packard Multiprobe II liquid handling system. A cell was constructed with a single lithium reference–counter electrode and 64, three-millimeter-diameter working electrodes containing LixMn2O4 active material, PVdF–HFP binder and carbon black as a conducting additive. Eight duplicate electrodes, each of eight respective compositions, were deposited on the array and the mass fraction of carbon was varied in steps from 1 to 25%. The results showed a rapid increase in capacity at the percolation limit of 3% for most cells. Some groups of nominally identical cells showed random variations in capacity, especially at low carbon loadings. The overall result is a demonstration of advantages of the combinatorial concept, which were time-saving and an improved statistical significance of the results compared with on–off experiments.
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Published date: 2003
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Local EPrints ID: 26882
URI: http://eprints.soton.ac.uk/id/eprint/26882
ISSN: 0378-7753
PURE UUID: 6aa70e5b-aa4c-4dc7-b26e-4bf4b5599e4b
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Date deposited: 24 Apr 2006
Last modified: 16 Mar 2024 02:59
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Author:
A.D. Spong
Author:
G. Vitins
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