Hydrocarbon treatment of carbonaceous materials
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United States of America Patent
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Nov 7, 2000
Grant Date -
N/A
app pub date -
Oct 14, 1997
filing date -
Oct 14, 1997
priority date (Note) -
Expired
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Abstract
A method for making a carbonaceous material suitable for use as an electrode composition that includes contacting pyrolyzed organic material with hydrocarbon gas for a period and at a temperature sufficient to produce a carbonaceous material characterized such that when the carbonaceous material is incorporated into an electrode composition of a lithium-ion cell, the cell exhibits a reversible capacity of at least about 400 mAH/g of carbonaceous material and an irreversible capacity no greater than about 140 mAH/g of carbonaceous material, the capacities being measured up to the point of plating of metallic lithium on the surface of the carbonaceous material.
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