Title:
NONAQUEOUS SOLVENT SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3212662
Kind Code:
B2
Abstract:
PURPOSE: To provide a secondary battery having a large charging/discharging capacity and presenting less drop of the electric charge efficiency due to use of continuous cycles by forming a negative electrode from a carbonic substance bearing specific characteristics.
CONSTITUTION: A carbonic substance to form a negative electrode is composed of a core 1 and a facial layer part 2. This substance is structured in multiple layers and so as to present a diffraction peak whose real density is over 2.00g/cm3 and whose (002) plane spacing (d002) is below 3.43&angst in the diffraction chart for X-ray wide angle diffraction. A non-aqueous solvent secondary battery having a large charging/discharging capacity and presenting less drop of the electric charge efficiency due to use of continuous cycle is achieved through the use of an electrolytic solution prepared by dissolving electrolyte in a non- aqueous hybrid solvent containing 0.1-70vol.% ethylene carbonate characterized by that a peak PA lies in the range 1580-1620cm-1 and a peak PB in the range 1350-1370cm-1 in Raman spectral analysis using an argon laser beam of wavelength 5145&angst and that the ratio R of the intensity I' of the peak PB to the intensity IA of the peak PA (R=IB/IA) is exceeding 0.4.
Inventors:
Mitsutaka Miyabayashi
Kane Karasawa
Kane Karasawa
Application Number:
JP2230792A
Publication Date:
September 25, 2001
Filing Date:
February 07, 1992
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C04B35/52; C01B31/02; H01M4/133; H01M4/583; H01M10/05; (IPC1-7): H01M10/40; H01M4/02; H01M4/58
Domestic Patent References:
| JP63121261A | ||||
| JP4322056A | ||||
| JP4370662A | ||||
| JP4368778A |
Other References:
【文献】国際公開90/13924(WO,A1)
Attorney, Agent or Firm:
Soga Doteru (6 people outside)
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