Thin lithium battery with slurry cathode
First Claim
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1. A thin layer electrochemical cell, comprising:
- a lithium-containing anode; and
a cathode slurry, comprised of;
about 60% to about 70% by weight electrolytic manganese dioxide, about 5% to about 10% by weight carbon, and about 25% to about 35% by weight of an electrolyte consisting essentially of ethylene carbonate, propylene carbonate and triflate salt.
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Abstract
A cathode slurry for use in a lithium battery, comprised of:
about 60% to about 70% by weight electrolytic manganese dioxide;
about 5% to about 10% by weight carbon; and
about 25% to about 35% by weight of an electrolyte, said electrolyte comprised of:
about 10% to about 40% by weight ethylene carbonate,
about 60% to about 90% by weight propylene carbonate, and
about 0.5 to about 1.5 moles of triflate salt.
76 Citations
11 Claims
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1. A thin layer electrochemical cell, comprising:
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a lithium-containing anode; and
a cathode slurry, comprised of;
about 60% to about 70% by weight electrolytic manganese dioxide, about 5% to about 10% by weight carbon, and about 25% to about 35% by weight of an electrolyte consisting essentially of ethylene carbonate, propylene carbonate and triflate salt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
about 20% by weight ethylene carbonate;
about 80% by weight propylene carbonate; and
about 1.2 moles triflate salt.
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9. A cell as defined in claim 1, wherein said electrolytic manganese dioxide has an average particle size of about 10 microns to about 30 microns, a surface area of about 30 m2/g to about 50 m2/g and a porosity (N2) of about 0.02 cc/g to about 0.08 cc/g.
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10. A cathode slurry for use in a lithium battery, comprised of:
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about 60% to about 70% by weight electrolytic manganese dioxide;
about 5% to about 10% by weight carbon; and
about 25% to about 35% by weight of an electrolyte, said electrolyte comprised of;
about 10% to about 40% by weight ethylene carbonate, about 60% to about 90% by weight propylene carbonate, and about 0.5 to about 1.5 moles of triflate salt.
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11. A thin layer electrochemical cell, comprising:
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a lithium-containing anode; and
a cathode slurry, comprised of;
a mixture of about 60% to about 70% by weight of dry heated electrolytic manganese dioxide powder and about 5% to about 10% by weight of dry heated carbon powder, said manganese dioxide powder and carbon powder mixture having an initial moisture content of less than 200 ppm, and about 25% to about 35% by weight of an electrolyte consisting essentially of ethylene carbonate, propylene carbonate and triflate salt.
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Specification
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Current AssigneeNGK Spark PLUG Company Limited
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Original AssigneeNTK Powerdex, Inc.
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InventorsFang, Wanjun, Xing, Xuekun, Shokoohi, Frough K., Nardi, Jay, Moutsios, George W.
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Primary Examiner(s)CHANEY, CAROL DIANE
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Application NumberUS09/272,684Time in Patent Office886 DaysField of Search429/162, 429/338, 429/331, 429/224US Class Current429/224CPC Class CodesH01M 4/50 of manganeseH01M 50/548 on opposite sides of the cellH01M 50/562 characterised by the materialH01M 6/12 with flat electrodesH01M 6/162 characterised by the electr...H01M 6/164 by the solventY02E 60/10 Energy storage using batteries
