Nonaqueous secondary battery

Claim 2

A nonaqueous secondary battery comprising a positive electrode active material, a negative electrode active material, and an electrolyte having ionic conductivity, said battery containing, as a binder, a carboxyl-modified styrene-butadiene copolymer in the positive electrode material mixture thereof and/or the negative electrode material mixture thereof and using at least one chalcogen compound of a transition metal as a positive electrode active material and at least one chalcogen compound of a transition metal as a negative electrode active material.

Claim 3

A nonaqueous secondary battery as claimed in claim 1, wherein said carboxyl-modified styrene-butadiene copolymer has a carboxyl content of from 0.01 to 7 mmol per gram and a styrene to butadiene weight ratio of from 10:90 to 70:30.

Claim 4

A nonaqueous secondary battery as claimed in claim 1, wherein said chalcogen compound of a transition metal as a negative electrode active material is a lithium-containing transition metal oxide.

Claim 5

A nonaqueous secondary battery as claimed in claim 3, wherein said lithium-containing transition metal oxide is represented by formula Li p M q V 1-q O r , wherein M represents a transition metal; p is from 0.4 to 11; q is from 0 to 1; and r is from 1.2 to 5.5.

Claim 6

A nonaqueous secondary battery as claimed in claim 3, wherein said lithium-containing transition metal oxide is represented by formula Li p CO q V 1-q O r , wherein p is from 0.4 to 11; q is from 0 to 1; and r is from 1.2 to 5.5.

Claim 7

A nonaqueous secondary battery as claimed in claim 5, wherein said lithium-containing transition metal oxide as a positive electrode is represented by formula Li x M y O z , wherein M represents at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Mo, and W; x is from 0.6 to 2.1; y is 1 or 2; and z is from 1.5 to 5.

Claim 8

A nonaqueous secondary battery comprising a positive electrode active material, a negative electrode active material, and an electrolyte having ionic conductivity, said battery containing, as a binder, a polymer represented by formula (I) shown below in the positive electrode material mixture thereof and/or the negative electrode material mixture thereof and using at least one chalcogen compound of a transition metal as a positive electrode active material and at least one chalcogen compound of a transition metal as a negative electrode active material: ##STR6## wherein R 1 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; R 2 represents an alkyl group having from 1 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms or an aralkyl group having from 7 to 13 carbon atoms; R 3 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; x is from 5 to 40% by weight; y is from 40 to 90% by weight; and z is from 1 to 20% by weight; with the sum of x, y, and z being 100% by weight.

Claim 9

A nonaqueous secondary battery comprising a positive electrode active material, a negative electrode active material, and an electrolyte having ionic conductivity, said battery containing, as a binder, a polymer represented by formula (I) shown below in the positive electrode material mixture thereof and/or the negative electrode material mixture thereof and using at least one chalcogen compound of a transition metal as a positive electrode active material and at least one chalcogen compound of a transition metal as a negative electrode active material: ##STR6## wherein R 1 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; R 2 represents an alkyl group having from 1 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms or an aralkyl group having from 7 to 13 carbon atoms; R 3 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; x is from 5 to 40% by weight; y is from 40 to 90% by weight; and z is from 1 to 20% by weight; with the sum of x, y, and z being 100% by weight.

Claim 10

A nonaqueous secondary battery as claimed in claim 7, wherein said chalcogen compound of a transition metal as a negative electrode active material is a lithium-containing transition metal oxide.

Claim 11

A nonaqueous secondary battery as claimed in claim 8, wherein said lithium-containing transition metal oxide is represented by formula Li p M q V 1-q O r , wherein M represents a transition metal; p is from 0.4 to 11; q is from 0 to 1; and r is from 1.2 to 5.5.

Claim 12

A nonaqueous secondary battery as claimed in claim 8, wherein said lithium-containing transition metal oxide is represented by formula Li p Co q V 1-q O r , wherein p is from 0.4 to 11; q is from 0 to 1; and r is from 1.2 to 5.5.

Claim 13

A nonaqueous secondary battery as claimed in claim 10, wherein said lithium-containing transition metal oxide as a positive electrode is represented by formula Li x M y O z , wherein M represents at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Mo, and W; x is from 0.6 to 2.1; y is 1 or 2; and z is from 1.5 to 5.

Claim 14

A nonaqueous secondary battery comprising a positive electrode active material, a negative electrode active material, and an electrolyte having ionic conductivity, said battery containing, as a binder, a polymer represented by formula (II) shown below in the positive electrode material mixture thereof and/or the negative electrode material mixture thereof and using at least one chalcogen compound of a transition metal as a positive electrode active material and at least one chalcogen compound of a transition metal as a negative electrode active material: ##STR7## wherein R 1 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; R 2 represents an alkyl group having from 1 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms or an aralkyl group having from 7 to 13 carbon atoms; R 3 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; R 4 and R 5 , which may be the same or different, each represent a hydrogen atom, an alkyl group having from 1 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms or an aralkyl group having from 7 to 13 carbon atoms; x is from 5 to 40% by weight; y is from 40 to 90% by weight; and z is from 1 to 20% by weight; with the sum of x, y, and z being 100% by weight.

Claim 15

A nonaqueous secondary battery comprising a positive electrode active material, a negative electrode active material, and an electrolyte having ionic conductivity, said battery containing, as a binder, a polymer represented by formula (II) shown below in the positive electrode material mixture thereof and/or the negative electrode material mixture thereof and using at least one chalcogen compound of a transition metal as a positive electrode active material and at least one chalcogen compound of a transition metal as a negative electrode active material: ##STR7## wherein R 1 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; R 2 represents an alkyl group having from 1 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms or an aralkyl group having from 7 to 13 carbon atoms; R 3 represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms; R 4 and R 5 , which may be the same or different, each represent a hydrogen atom, an alkyl group having from 1 to 12 carbon atoms, an aryl group having from 6 to 12 carbon atoms or an aralkyl group having from 7 to 13 carbon atoms; x is from 5 to 40% by weight; y is from 40 to 90% by weight; and z is from 1 to 20% by weight; with the sum of x, y, and z being 100% by weight.

Claim 16

A nonaqueous secondary battery as claimed in claim 12, wherein said chalcogen compound of a transition metal as a negative electrode active material is a lithium-containing transition metal oxide.

Claim 17

A nonaqueous secondary battery as claimed in claim 13, wherein said lithium-containing transition metal oxide is represented by formula Li p M q V 1-q O r , wherein M represents a transition metal; p is from 0.4 to 11; q is from 0 to 1; and r is from 1.2 to 5.5.

Claim 18

A nonaqueous secondary battery as claimed in claim 13, wherein said lithium-containing transition metal oxide is represented by formula Li p Co q V 1-q O r , wherein p is from 0.4 to 11; q is from 0 to 1; and r is from 1.2 to 5.5.

Claim 19

A nonaqueous secondary battery as claimed in claim 15, wherein said lithium-containing transition metal oxide as a positive electrode as a positive electrode is represented by formula Li x M y O z , wherein M represents at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Mo, and W; x is from 0.6 to 2.1; y is 1 or 2; and z is from 1.5 to 5.