Electrochemical high rate storage materials, process and electrodes
AssigneeCorning Incorporated
InventorsKishor Purushottam Gadkaree, James Robert Lim
Life of this patent
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Abstract
A non-activated, majority non-graphitic amorphous carbon material may be produced by supplying a carbonized precursor material, heating the carbonized precursor material in a first heating step at a temperature and for a duration sufficient to produce a heat-treated carbon material that has a specific surface area less than about 500 m2/g and is less than about 20% graphitic by mass, purifying the heat-treated carbon material, and heating the purified heat-treated carbon material in a second heating step at a temperature and for a duration to produce a non-activated, majority non-graphitic amorphous carbon material that has a specific surface area less than about 500 m2/g and is less than about 20% graphitic by mass.
Claims12
A process for producing a non-activated, majority non-graphitic amorphous carbon material, the process comprising:
- providing a carbonized precursor material;
- heating the carbonized precursor material in a first heating step at a temperature ranging from about 800° C. to about 1200° C. and for a duration ranging from about 0.5 hours to about 12 hours to produce a non-activated, heat-treated carbon material;
- purifying the non-activated, heat-treated carbon material to produce a purified heat-treated carbon material by washing the non-activated, heat-treated carbon material with at least one of an acidic chemical solution comprising an acidic chemical species and a basic chemical solution comprising a basic chemical species;
- and
- heating the purified heat-treated carbon material in a second heating step at a temperature and for a duration sufficient to produce a non-activated, majority non-graphitic amorphous carbon material that has a specific surface area less than about 500 m2/g and is less than about 20% graphitic by mass.
A process for producing a non-activated, majority non-graphitic amorphous carbon material, the process comprising:
- providing a carbonized precursor material;
- heating the carbonized precursor material in a first heating step at a temperature ranging from about 800° C. to about 1200° C. and for a duration ranging from about 0.5 hours to about 12 hours to produce a non-activated, heat-treated carbon material;
- purifying the non-activated, heat-treated carbon material to produce a purified heat-treated carbon material by washing the non-activated, heat-treated carbon material with at least one of an acidic chemical solution comprising an acidic chemical species and a basic chemical solution comprising a basic chemical species;
- and
- heating the purified heat-treated-carbon material in a second heating step at a temperature and for a duration sufficient to produce a non-activated, majority non-graphitic amorphous carbon material that has a specific surface area less than about 500 m2/g and has at least one of a Raman Graphitization Ratio of less than about 2:1 and an X-ray Graphitization Ratio of less than about 25:1.
Dependencies are inferred from the claim text.