EP0875951A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Composite anode for secondary lithium battery
Assignee: Panasonic Holdings Corp
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Filing: 1998-03-27
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Granted: —
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Expires: 2018-03-27
Abstract
Abstract The invention provides a secondary lithium battery of which the electrode reaction at the negative electrode is a dissolution-deposition reaction of metallic lithium. The battery comprises a negative electrode which has a first electrode component where a deposition-dissolution reaction of metallic lithium will take place in charging and discharging and a second electrode component to prevent metallic lithium from being deposited in the form of dendrite. The second electrode component shows electronic-ionic mixed conduction and is preferably semiconductive; examples are Li-intercalating transition metal oxides and sulfides, and Li-ion conductive electrolytes.
Inventors
- 👤 Kazunori Takada
- 👤 Makoto Fujino
- 👤 Kazuya Iwamoto
- 👤 Shigeo Kondo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 18:31
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/485; H01M10/00; H01M10/05; H01M10/052; H01M4/13; H01M4/134; H01M4/362; H01M4/366; H01M4/38; H01M4/381; H01M4/382; H01M10/0525; H01M10/056; H01M10/0561; H01M10/0562; H01M4/131; H01M4/133; H01M4/50; H01M4/505; H01M4/52; H01M4/525; H01M4/64; H01M4/66; H01M4/661; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
A secondary lithium battery comprising a
lithium ion conductive electrolyte, a positive electrode
and a negative electrode in contact with said electrolyte,
wherein said negative electrode has a first electrode
component where a deposition-dissolution reaction of
metallic lithium will take place during charging and
discharging and a second electrode component to prevent
metallic lithium from being deposited in the form of
dendrite.
Claim 2
Dependent Claim
37 words
The secondary lithium battery in accordance
with claim 1, wherein said first electrode component has
electronic conductivity and is electrically connected to a
terminal of the negative electrode, and said second
electrode component has electronic-ionic mixed conduction.
Claim 3
Dependent Claim
35 words
The secondary lithium battery in accordance
with claim 1, wherein said first electrode component is
electronic conductive and is electrically connected to a
terminal of the negative electrode, and said second
electrode component is semiconductive.
Claim 4
Dependent Claim
21 words
The secondary lithium batteries in accordance
with claim 1, wherein said second electrode component is
formed on said first electrode component.
Claim 5
Dependent Claim
27 words
The secondary lithium battery in accordance
with claim 2, wherein the electronic conductivity of said
second electrode component is lower than the electric
conductivity of said electrolyte.
Claim 6
Dependent Claim
28 words
The secondary lithium battery in accordance
with claim 5, wherein the electronic conductivity at room
temperature of said second electrode component is not
higher than 5×10 -2 S/cm.
Claim 7
Dependent Claim
29 words
The secondary lithium battery in accordance
with claim 2, wherein the transport number of electron of
said second electrode component is lower than the
transport number of lithium ion.
Claim 8
Dependent Claim
34 words
The secondary lithium battery in accordance
with claim 1, wherein said second electrode component
comprises a material selected from the group consisting of
transition metal oxides, transition metal sulfides, and
lithium ion conductive electrolytes.
Claim 9
Dependent Claim
28 words
The secondary lithium battery in accordance
with claim 1, wherein said second electrode component
comprises a semiconductive material having a band gap of 1
eV to 5 eV.
Claim 10
Dependent Claim
63 words
A secondary lithium battery comprising a
lithium ion conductive electrolyte, a positive electrode
and negative electrode in contact with said electrolyte,
wherein said negative electrode has a first electrode
component which is comprised of an electronic conductive
material and is electrically connected to a terminal of
the negative electrode and a second electrode component
which is comprised of an electronic-ionic mixed conductive
material.
Claim 11
Dependent Claim
61 words
A secondary lithium battery comprising a
lithium ion conductive electrolyte, a positive electrode
and negative electrode in contact with said electrolyte,
wherein said negative electrode has a first electrode
component which is comprised of an electronic conductive
material and is electrically connected to a terminal of
the negative electrode and a second electrode component
which is comprised of a semiconductor material.
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