Title:
【発明の名称】非水電解液二次電池
Document Type and Number:
Japanese Patent JP2792373
Kind Code:
B2
Abstract:
PURPOSE:To provide a high capacity carbon negative electrode by using highly crystalline carbon material for the negative electrode, and setting a charge quantity of the carbon material in a range of 0.9g/cm<3> or more and 1.6g/cm<3> or less. CONSTITUTION:A secondary battery is provided with a positive electrode capable of repeated charges and discharges, nonaqueous electrolyte including alkali metal ions, and a negative electrode comprising carbon material capable of storage and emission of the alkali metal ions. A spacing (d002) of a surface (002) by an X-ray wide angle diffraction method in the carbon material is set to be less than 0.337nm, and a charging density of the carbon material to the negative electrode is set to be 0.9g/cm<3> or more and 1.6g/cm<3> or less. In the case of the negative electrode which is applied as paste of the carbon material and binder formed by organic solvent, if a surface area of the carbon material is large, with a small grain size, a bulk density of the carbon material is low, so the charging density to the electrode is small if it is rolled. A high capacity can thus be achieved by using this negative electrode.
Inventors:
KOMATSU SHIGEO
Application Number:
JP34536192A
Publication Date:
September 03, 1998
Filing Date:
November 30, 1992
Export Citation:
Assignee:
NIPPON DENCHI KK
International Classes:
C01B31/02; C01B31/04; H01M4/133; H01M4/587; H01M10/05; (IPC1-7): H01M10/40; H01M4/02; H01M4/58
Domestic Patent References:
| JP617567A | ||||
| JP282466A | ||||
| JP4184862A | ||||
| JP5290848A | ||||
| JP5307958A |