Lithium battery

A lithium battery, non-aqueous electrolyte technology, applied in secondary batteries, battery electrodes, non-aqueous electrolyte batteries, etc., can solve the problem that the charging and discharging characteristics of lithium batteries cannot be fully improved.
CN1531124AInactive Publication Date: 2004-09-22SANYO ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SANYO ELECTRIC CO LTD
Publication Date
2004-09-22
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A lithium cell includes a positive electrode, a negative electrode employing a carbon material as an active material, and a non-aqueous electrolyte including a solute dissolved in a non-aqueous solvent, and is characterized in that the carbon material in the negative electrode has an RA value (IA / IG) of 0.05 or more, the RA value calculated from a peak intensity (IA) of a broad peak PA having a full width at half maximum of 100 cm<-1 >or more and a peak intensity (IG) in the vicinity of 1580 cm<-1 >as determined by laser Raman spectroscopy using an argon ion laser having a wavelength of 514.5 nm, the peak intensity (IA) determined from a peak PD in the vicinity of 1360 cm<-1>, as determined by the aforesaid laser Raman spectroscopy, which is separated into the broad peak PA having the full width at half maximum of 100 cm<-1 >or more and a peak PB having a full width at half maximum of less than 100 cm<-1>.
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Description

technical field

[0001] The invention relates to a lithium battery having a positive electrode, a negative electrode using a carbon material as an active material, and a non-aqueous electrolytic solution in which a solute is dissolved in a non-aqueous solvent, and particularly relates to a lithium battery having an excellent battery obtained by using an appropriate carbon material in the negative electrode. The characteristics of the charge and discharge characteristics of the lithium battery. Background technique

[0002] In recent years, lithium batteries using a non-aqueous electrolytic solution in which a solute is dissolved in a non-aqueous solvent and utilizing a high electromotive force of oxidation and reduction of lithium have been widely used as new batteries with high output and high energy density.

[0003] Here, in such a lithium battery, carbon materials such as graphite or coke that can realize insertion and extraction of lithium ions are used as the material u...

Claims

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