Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1998-03-10
2000-12-05
Chaney, Carol
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
4292318, 423439, H01M 458
Patent
active
061564575
ABSTRACT:
This invention provides a lithium secondary battery comprising a positive electrode, and a negative electrode comprising a carbonaceous material which is capable of absorbing or desorbing lithium ion, wherein the carbonaceous material comprises 1 to 10% by weight of boron and 0.1 to 1% by weight of oxygen, and has an intensity ratio (P.sub.101 /P.sub.100) i.e., a ratio in intensity of a (101) diffraction peak P.sub.101 to a (100) diffraction peak P.sub.100 as measured by means of powder X-ray diffraction, of 2 or more.
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Tsuyoshi Nakajima, et al., "Surface Fluorination and Oxidation of Carbon Materials for Negative Electrode of Lithium Ion Secondary Battery", Tanso, vol. 174, Oct. 1996, pp. 195-200.
J.R. Dahn, et al., "Density of States in Graphite Form Electrochemical Measurements on Li.sub.x (C.sub.1 -.sub.z B.sub.z).sub.6 ", Physical Review B, vol. 45, No. 7, Feb. 15, 1992, pp. 3773-3777.
Yoshiyuki Nishimura, et al., "Anode Performance of B-Doped Mesophase Pitch-Based Carbon Fibers in Lithium Ion Secondary Batteries", Tanso, vol. 172, May 1996, pp. 89-94.
B. D. Cullity, "Elements of X-Ray Diffraction", Addison Wesley Publishers, pp. 398-402 (no month available), 1978.
Osaki Takahisa
Sato Asako
Takami Norio
Chaney Carol
Kabushiki Kaisha Toshiba
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