Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A nonaqueous electrolyte secondary battery comprising: - a negative electrode (1) which comprises a carbonaceous material capable of doping and de-doping lithium. - a positive electrode (2) made of an active material which comprises a Li-containing metal complex oxide of the general formula, Li x MO₂, wherein M represents at least one member selected from the group consisting of Co, Ni and Mn and 0.5 ≦ x ≦ 1, and - a nonaqueous electrolyte which contains an electrolyte and an organic solvent therefor, the organic solvent being a mixed solvent of propylene carbonate and at least one member selected from the group consisting of diethyl carbonate and dipropyl carbonate.
Claim 2
Dependent Claim
21 words
The battery according to Claim 1, wherein said negative electrode (1) comprises a mixture of the carbonaceous material and binder therefor.
Claim 3
Dependent Claim
54 words
The battery according to Claim 1, wherein said carbonaceous material is obtained from a member selected from the group consisting of furan resins and petroleum pitches and has a spacing of (002) planes of not less than 3.70 angstroms and any exothermic peak at temperatures not lower than 700°C when determined differential thermal analysis.
Claim 4
Dependent Claim
27 words
The battery according to Claim 3, wherein said carbonaceous material further comprises from 0.2 to 5.0 wt% of phosphorus or from 0.1 to 2.0 wt% of boron.
Claim 5
Dependent Claim
26 words
The battery according to Claim 1, wherein said positive electrode is made of a mixture of said active material, a conductive material and a binder thereof.
Claim 6
Dependent Claim
33 words
The battery according to Claim 5, wherein said active material is a member selected from the group consisting of LiCoO₂. LiNi y Co 1-y O₂, wherein O<y<1, LiNiO₂, LiMn₂ O₄ and mixtures thereof.
Claim 7
Dependent Claim
27 words
The battery according to Claim 1, wherein said mixed solvent has a content of propylene carbonate of from 15 to 75 vol% based on the mixed solvent.
Claim 8
Dependent Claim
14 words
The battery according to Claim 1, wherein at least one member is diethyl carbonate.
Claim 9
Dependent Claim
14 words
The battery according to Claim 1, wherein at least one member is dipropyl carbonate.