EP0139756A1
Expired / Lapsed
EP
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Rechargeable electrochemical apparatus and negative pole therefor
Assignee: Panasonic Holdings Corp
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Filing: 1984-03-06
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Granted: —
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Expires: 2004-03-06
Abstract
Abstract A rechargeable negative pole for an electrochemical apparatus using a non-aqueous electrolyte is made of an alloy consisting essentially of one element selected from the group of Sn, Pb, In and Bi, with Zn or Zn and Cd. A rechargeable electrochemical apparatus is provided with a combination of this negative pole and a positive pole, and can be reversibly charged. When immersed in a non-aqueous electrolyte containing alkali metal ions, the negative pole reversibly occludes and emits the alkali metal ions by this charge and discharge. The negative pole has a long charge-and-discharge life, since however many times the charge and discharge is repeated, the negative pole is not fragmented, and the negative pole maintains its electrode configuration stably. In addition, since the amount of alkali metal occluded per unit volume is large, the energy density is high.
Inventors
- 👤 Yoshinori Toyoguchi
- 👤 Junichi Yamaura
- 👤 Tooru Matsui
- 👤 Takashi Iijima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 10:29
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M10/00; H01M10/36; H01M4/36; H01M4/38; H01M4/40; H01M4/64; H01M4/66; H01M4/661; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 65
Claim 1
Independent Claim
89 words
In a rechargeable nagative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising (1) at least one metal selected from the group consisting of Sn, Pb, In and Bi and (2) Zn or Zn and Cd.
Claim 2
Dependent Claim
89 words
In a rechargeable nagative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising (1) at least one metal selected from the group consisting of Sn, Pb, In and Bi and (2) Zn or Zn and Cd.
Claim 3
Dependent Claim
21 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 1, wherein the alkali metal ion is a lithium ion.
Claim 4
Dependent Claim
36 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 1, wherein said alloy is a binary alloy comprising Zn and at least one metal selected from the group consisting of Sn, Pb and In.
Claim 5
Dependent Claim
26 words
The rechargeable nagative electrode for an electrochemical apparatus according to Claim 1, wheren the content of Zn in said alloy is 20 to 70% by weight.
Claim 6
Dependent Claim
23 words
The rechargeable nagative electrode for an electrochemical apparatus according to Claim 1, wherein said alloy is a binary alloy comprising Bi and Zn.
Claim 7
Dependent Claim
29 words
In Claim 5, The rechargeable negative electrode for an electrochemical apparatus according to Claim 5, wherein the content of Zn in said alloy is 50 to 85% by weight.
Claim 8
Dependent Claim
36 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 1, wherein said alloy is an alloy comprising Zn and at least two metals selected from the group consisting of Sn, Pb, In and Bi.
Claim 9
Dependent Claim
26 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 7, wherein the content of Zn in said alloy is 20 to 80% by weight.
Claim 10
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 8, wherein said alloy comprises Sn and In, the weigh ratio of Sn to In being 1/9 to 9/1.
Claim 11
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 8, wherein said alloy comprises Sn and Pb, the weight ratio of Sn to Pb being 4/1 to 1/2.
Claim 12
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 8, wherein said alloy comprises Pb and In, the weight ratio of Pb to In being 3/1 to 1/9.
Claim 13
Dependent Claim
44 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 8, wherein said alloy is an alloy comprising 50% by weight or less of Bi, the remaining portion being at least one metal selected from the group consisting of Sn, Pb and In.
Claim 14
Dependent Claim
37 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 1, wherein said alloy is an alloy comprising Zn, Cd and at least one metal selected from the group consisting of Sn, Pb, In and Bi.
Claim 15
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 13, wherein the sum of contents of Zn and Cd in said alloy is 15 to 80% by weight.
Claim 16
Dependent Claim
23 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 14, wherein the content of Cd is 50% by weight or less.
Claim 17
Dependent Claim
69 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of discharge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of charge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Sn and Zn.
Claim 18
Dependent Claim
69 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of discharge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of charge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Sn and Zn.
Claim 19
Dependent Claim
21 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 16, wherein said alkali metal ion is a lithium ion.
Claim 20
Dependent Claim
26 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 16, wherein the content of Zn in said alloy is 20 to 80% by weight.
Claim 21
Dependent Claim
26 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 18, wherein the content of Zn in said alloy is 30 to 60% by weight.
Claim 22
Dependent Claim
82 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Zn, Sn and at least one metal selected from the group consisting of In and Pb.
Claim 23
Dependent Claim
82 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Zn, Sn and at least one metal selected from the group consisting of In and Pb.
Claim 24
Dependent Claim
21 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 20, wherein said alkali metal ion is a lithium ion.
Claim 25
Dependent Claim
18 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 20, wherein said alloy is Pb-Sn-Zn alloy.
Claim 26
Dependent Claim
26 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 22, wherein the content of Zn in said alloy is 20 to 80% by weight.
Claim 27
Dependent Claim
37 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 23, wherein the content of Zn in said alloy is 30 to 60% by weight and the content of Pb is 10 to 20% by weight.
Claim 28
Dependent Claim
18 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 20, wherein said alloy is Sn-Zn-In alloy.
Claim 29
Dependent Claim
23 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 25, wherein the content of Zn is 20 to 80% by weight.
Claim 30
Dependent Claim
34 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 26, wherein the content of Zn is 30 to 60% by weight and the content of In is 3 to 10% by weight.
Claim 31
Dependent Claim
19 words
The rechargeab le negative electrode for an electrochemical apparatus according to Claim 20, wherein said alloy is Pb-Sn-Zn-In alloy.
Claim 32
Dependent Claim
26 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 28, wherein the content of Zn in said alloy is 20 to 80% by weight.
Claim 33
Dependent Claim
44 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 29, wherein the content of Zn is 30 to 60% by weight, the content of Pb is 10 to 20% by weight and the content of In is 3 to 10% by weight.
Claim 34
Dependent Claim
69 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous-electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Sn, Zn and Cd.
Claim 35
Dependent Claim
69 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous-electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Sn, Zn and Cd.
Claim 36
Dependent Claim
21 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 31, wherein said alkali metal ion is a lithium ion.
Claim 37
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 31, wherein the sum of contents of Zn and Cd in said alloy is 20 to 80% by weight.
Claim 38
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Clai 33, wherein the sum of contents of Zn and Cd in said alloy is 30 to 60% by weight.
Claim 39
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Clai 33, wherein the sum of contents of Zn and Cd in said alloy is 30 to 60% by weight.
Claim 40
Dependent Claim
23 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 34, wherein the content of Cd is 10 to 20% by weight.
Claim 41
Dependent Claim
83 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Sn, Zn, Cd and at least one metal selected from the group consisting of In and Pb.
Claim 42
Dependent Claim
83 words
In a rechargeable negative electrode for an electrochemical apparatus using nonaqueous electrolyte, said electrode comprising an alloy which absorbs, as the result of charge, alkali metal ions in the electrolyte, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable negative electrode for an electrochemical apparatus wherein said alloy is an alloy comprising Sn, Zn, Cd and at least one metal selected from the group consisting of In and Pb.
Claim 43
Dependent Claim
21 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 36, wherein said alkali metal ion is a lithium ion.
Claim 44
Dependent Claim
18 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 36, wherein said alloy is Pb-Sn-Zn-Cd alloy.
Claim 45
Dependent Claim
27 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 38, wherein the sum of contents of Zn and Cd is 20 to 80% by weight.
Claim 46
Dependent Claim
38 words
The rechargeable negative electrode fr an electrochemical apparatus according to Claim 39, wherein the sum of contents of Zn and Cd is 30 o 60% by weight and the content of Pb is 10 to 20% by weight.
Claim 47
Dependent Claim
23 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 40, wherein the content of Cd is 10 to 20% by weight.
Claim 48
Dependent Claim
18 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 36, wherein said alloy is Sn-Zn-Cd-In alloy.
Claim 49
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 42, wherein the sum of contents of Zn and Cd in said alloy is 20 to 80% by weight.
Claim 50
Dependent Claim
30 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 43, wherein the sum of contents of Zn and Cd in said alloy is 30 to 60% by weight.
Claim 51
Dependent Claim
37 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 44, wherein the content of Cd in said alloy is 10 to 20% by weight and the content of In is 3 to 10% by weight.
Claim 52
Dependent Claim
18 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 36, wherein said alloy is Pb-Sn-Zn-Cd-In alloy.
Claim 53
Dependent Claim
27 words
The rechargeable negative electrode for an electrochemical apparatus acording to Claim 46, wherein the sum of contents of Zn and Cd is 20 to 80% by weight.
Claim 54
Dependent Claim
38 words
The rechargeable negative electrode for an electrochemical apparatus according to Claim 46, wherein the sum of contents of Zn and Cd is 30 to 60% by weight and the content of Pb is 10 to 20% by weight.
Claim 55
Dependent Claim
34 words
The rechargeble negative electrode for an electrochemical apparatus according to Claim 48, wherein the content of In is 3 to 10% by weight and the content of Cd is 10 to 20% by weight.
Claim 56
Dependent Claim
69 words
In a rechargeable electrochemical apparatus provided with a nonaqueous electrolyte containing alkali metal ions, a reversible positive electrode, and a negative electrode comprising an alloy which absorbs, as the result of charge, said alkali metal ions, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable electrochemical apparatus wherein said negative electrode comprises an alloy comprising
Claim 57
Dependent Claim
69 words
In a rechargeable electrochemical apparatus provided with a nonaqueous electrolyte containing alkali metal ions, a reversible positive electrode, and a negative electrode comprising an alloy which absorbs, as the result of charge, said alkali metal ions, forming alloy with the alkali metal and desorbs, as the result of discharge, the alkali metal into the electrolyte as ions, a rechargeable electrochemical apparatus wherein said negative electrode comprises an alloy comprising
Claim 58
Dependent Claim
33 words
(1) at least one metal selected from the group consisting of Sn, In, Pb and Bi and (2) Zn or Zn and Cd and contains, at least in charged state, an alkali metal.
Claim 59
Dependent Claim
33 words
(1) at least one metal selected from the group consisting of Sn, In, Pb and Bi and (2) Zn or Zn and Cd and contains, at least in charged state, an alkali metal.
Claim 60
Dependent Claim
20 words
The rechargeable electrochemical apparatus according to Claim 50, wherein said negative electrode contains the alkali metal still in discharged state.
Claim 61
Dependent Claim
14 words
The rechargeable electrochemical apparatus according to Claim 50, wherein said alkali metal is lithium.
Claim 62
Dependent Claim
17 words
The electrochemical apparatus according to Claim 50, wherein said alloy is an alloy comprising Zn and Sn.
Claim 63
Dependent Claim
27 words
The electrochemical apparatus according to Claim 50, wherein said alloy comprises Zn, Sn and at least one metal selected from the group consisting of In and Pb.
Claim 64
Dependent Claim
18 words
The electrochemical apparatus according to Claim 50, wherein said alloy is an alloy comprising sn, Zn and Cd.
Claim 65
Dependent Claim
30 words
The electrochemical apparatus according to Claim 50, wherein said alloy is an alloy comprising Zn, Cd and at least one metal selected from the group consisting of In and Pb.
References Cited (Backward Citations)
No citation records indexed.
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