Positive electrode active material for secondary battery and secondary battery
AssigneeSanyo Electric Co., Ltd.
InventorsHideyuki Koga, Masahisa Fujimoto, Shin Fujitani
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Abstract
A secondary battery is characterized by using an organic material including carbon having a conjugate electron cloud and coupled with an electron attractive group; or a material obtained by baking a fluorocarbon polymer or graphite fluoride in an inert atmosphere at a temperature in the range of from the decomposition start temperature to 1000° C., as a positive electrode active material for the secondary battery.
Claims29
A secondary battery comprising, an organic material including a carbon having a conjugate electron cloud and coupled with an electron attractive group, a negative electrode, and a non-aqueous electrolyte, wherein said negative electrode active material is at least one kind selected from a carbon material, silicon, tin, aluminum and lithium metal.
An electrode for a secondary battery comprising, a material obtained by baking a fluorocarbon polymer in an inert atmosphere at a temperature in the range of from the decomposition start temperature to 1000° C.
An electrode for a secondary battery comprising, a material obtained by baking graphite fluoride in an inert atmosphere at a temperature in the range of from the decomposition start temperature to 1000° C.
A secondary battery comprising, a positive electrode containing as an active material, a material obtained by baking a fluorocarbon polymer in an inert atmosphere at a temperature in the range of from the decomposition start temperature to 1000° C., a negative electrode and a nonaqueous electrolyte.
A secondary battery comprising, a positive electrode containing as an active material, a material obtained by baking graphite fluoride in an inert atmosphere at a temperature in the range of from the decomposition start temperature to 1000° C., a negative electrode and a nonaqueous electrolyte.
A lithium secondary battery comprising:
- a positive electrode constituted of graphite fluoride;
- a negative electrode capable of absorbing and releasing lithium;
- a solute containing lithium;
- and an electrolyte solvent including a crown ether as a stabilizing solvent producing a stable intermediate with lithium intercalated between interlayers of graphite fluoride by discharge and with fluorine contained in the graphite fluoride.
A positive electrode active material for a secondary battery comprising, an organic material including a carbon having a conjugate electron cloud and coupled with an electron attractive group, wherein said organic material is at least one kind of a polymer of trifluoromethylbenzene selected from a,a,a-trifluorotoluene, paraditrifluoromethylbenzene, orthoditrifluoromethylbenzene, 1,2,3-tristrifluoromethylbenzene, 1,2,4-tristrifluoromethylbenzene, 1,3,5-tristrifluoromethylbenzene, 1,2,3,4-tetratrifluoromethylbenzene, 1,2,3,5-tetratrifluoromethylbenzene and 1,2,4,5-tetratrifluoromethylbenzene.
Dependencies are inferred from the claim text.