Negative electrode material for non-aqueous liquid electrolyte s

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4292318, 423445R, H01M 460

Patent

active

059725362

ABSTRACT:
A negative electrode material for a secondary cell for anon-aqueous liquid electrolyte for realizing a high charging/discharging capacity and a high discharging efficiency, a method for producing such material and a non-aqueous liquid electrolyte secondary cell employing such material. The negative electrode material contains at least one carbonaceous material selected from the group consisting of coffee beans, tea leaves, cane sugar, corns, fruits, straws of cereals and husks of cereals, a carbonaceous material derived from a plant-origin high molecular material containing a sum total of 0.2 to 20 wt % of metal elements, phosphorus and sulphur calculated as elements or a carbonaceous material having a diffraction peak between 30.degree. and 32.degree. of the 2.theta. diffraction angle in the X-ray (CuK.alpha.) powder diffraction pattern. For producing the negative electrode material, at least one carbonaceous material selected from the group consisting of coffee beans, tea leaves, cane sugar, corns, fruits, straws of cereals and husks of cereals, or crystalline or fibrous cellulose admixed with at least one of metal elements, phosphorus or sulphur, is sintered for carbonization. The negative electrode material is used for a non-aqueous liquid electrolyte secondary cell having a positive electrode formed of a lithium compound oxide and a negative electrode formed of a carbonaceous negative electrode material capable of doping and dedoping lithium ions as an active negative electrode material.

REFERENCES:
patent: Re33306 (1990-08-01), Hayashi et al.
patent: 1379222 (1921-05-01), Seaman
patent: 1462752 (1923-07-01), Jacobs
patent: 1538505 (1925-05-01), Atkinson
patent: 1903705 (1933-04-01), Nikaido
patent: 3961025 (1976-06-01), Harendza-Harinxma
patent: 4318710 (1982-03-01), Pilipski
patent: 5153082 (1992-10-01), Ogino et al.
patent: 5169736 (1992-12-01), Bittihn et al.
patent: 5238760 (1993-08-01), Takahashi et al.
patent: 5580538 (1996-12-01), Bito et al.
patent: 5834138 (1998-11-01), Yamada et al.
T. Ohzuku, et al., Formation of Lithium-Graphite Intercalation Compounds in Nonaqueous Electrolytes and Their Application as a Negative Electrode for a Lithium Ion (Shuttlecock) Cell, Journal of the Electrochemical Society, vol. 140, No. 9, Sep. 1, 1993, pp. 2490-2498, XP 000424105.
Patent Abstracts of Japan, vol. 014, No. 222 (E-0926), May 10, 1990 & JP 02054866 A (Mitsubishi Petrochem Co Ltd;Others: 01), Feb. 23, 1990.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Negative electrode material for non-aqueous liquid electrolyte s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Negative electrode material for non-aqueous liquid electrolyte s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Negative electrode material for non-aqueous liquid electrolyte s will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-761815

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.