Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1994-10-13
1996-09-24
Nuzzolillo, M.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
296231, 4234474, 264 297, H01M 404
Patent
active
055589545
ABSTRACT:
The present invention provides a method of preparing carbon electrodes for use in electrochemical energy storage cells such as lithium ion batteries. The process involves a step of precipitating a polymer from a concentrated solution to yield a structure having at least a partially fractious morphology. The solvent from which the polymer has been precipitated (the "primary solvent") is then exchanged with another solvent (the "secondary solvent") in which the polymer is relatively insoluble. Thereafter, the secondary solvent is removed from the precipitated polymer and the dry polymer is contacted with a dopant such as phosphorous. Subsequently, the polymer with dopant is pyrolyzed to yield a carbon material which is assembled into an electrode.
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patent: 4832881 (1989-05-01), Arnold, Jr. et al.
patent: 5028500 (1991-07-01), Fong et al.
"Textbook of Polymer Science," Billmeyer, Jr., 1962, 1971, pp. 38-47.
Meyer, Bill, Jr.; "Textbook of Polymer Science", 2nd., pp. 370-371;1971. (month N/A).
Nuzzolillo M.
Polystor Corporation
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