CN103066242A - Cathode for rechargeable lithium battery and rechargeable lithium battery with cathode - Google Patents
Cathode for rechargeable lithium battery and rechargeable lithium battery with cathode Download PDFInfo
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- CN103066242A CN103066242A CN2012105431033A CN201210543103A CN103066242A CN 103066242 A CN103066242 A CN 103066242A CN 2012105431033 A CN2012105431033 A CN 2012105431033A CN 201210543103 A CN201210543103 A CN 201210543103A CN 103066242 A CN103066242 A CN 103066242A
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- Prior art keywords
- lithium
- cathode
- battery
- rechargeable battery
- lithium battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to a cathode material for a rechargeable lithium battery. The cathode material comprises the following components in percentage by weight: 70 to 80 percent of active material, 5 to 10 percent of amorphous carbon, 5 to 15 percent of hydroxymethyl cellulose and 5 to 10 percent of epoxy resin, wherein the active material is a lithium-containing compound prepared by doping manganese, nickel, chromium, vanadium and cobalt into lithium oxide. When a cathode is applied to the lithium ion battery, the battery can be stabilized, and the service life of the battery is prolonged.
Description
Technical field
The disclosure relates to the negative material for lithium rechargeable battery, and comprises the lithium rechargeable battery of this negative pole.
Background technology
Lithium rechargeable battery has caused attention recently as the power supply of small portable electronic device.Graphite has higher capacity than other negative active core-shell materials.In order to increase the capacity of lithium rechargeable battery, the novel negative active core-shell material higher than graphite capacity begun one's study.Active material layer should keep securely in the initial charge process and not be separated with collector body, to guarantee high power capacity and good cycle life characteristics.The selection to suitable adhesive is depended in good adhesion between active material layer and the collector body.Require only a small amount of adhesive just electrode to be had the physics adhesive strength, this is so that just having high-energy-density.Adhesive also must be not and the electrolyte solution chemically reactive, and must keep stable form in battery operated temperature range.
Lithium rechargeable battery prepares by injecting the electrolyte into battery, and described battery comprises the positive pole positive electrode active materials of de-embedding lithium ion (comprise embedding /) and the negative pole negative active core-shell material of de-embedding lithium ion (comprise embedding /).
Summary of the invention
The invention provides a kind of negative material for lithium rechargeable battery, improved the cycle life characteristics of described lithium rechargeable battery.
A kind of negative material for lithium rechargeable battery, with the total restatement of negative material, described material comprises 70-80% active material, 5-10% amorphous carbon, 5-15% CMC and 5-10% epoxy resin, described active material is lithium-containing compound, is doped with manganese, nickel, chromium, vanadium and cobalt in the oxidate for lithium in the described compound.
Lithium in the wherein said lithium-containing compound: manganese: nickel: chromium: vanadium: the weight ratio of cobalt is 1-2:0.1-0.5:0.2-0.8:0.4-1:0.1-1:0.02-0.1.
A kind of lithium rechargeable battery comprises above-mentioned negative pole, positive pole and electrolyte.
Embodiment
Embodiment 1
Weight ratio take 1:0.1:0.2:0.4:0.1:0.1 is mixed lithium: manganese: nickel: chromium: vanadium: cobalt is as negative active core-shell material, with the total restatement of negative material, active material accounts for 80%, active material mixes with metal oxide, and add 5% amorphous carbon, 10% CMC and 5% epoxy resin, mix to make slurry with water, be applied to slurry on the battery lead plate and vacuumize obtains negative pole.Preparation is anodal subsequently.Electrolyte passes through 1.15M LiPF
6Be dissolved in ethylene carbonate (EC): ethylene methyl esters (EMC): prepare in the mixed solvent of diethyl carbonate (DMC) (volume ratio is 3: 4: 3), thereby lithium rechargeable battery is provided.
Although described the present invention in conjunction with some illustrative embodiments, those of ordinary skills should understand under the prerequisite of the spirit and scope of the invention that does not deviate from the appended claims restriction, can make certain modification to described execution mode.
Claims (3)
1. negative material that is used for lithium rechargeable battery, it is characterized in that: with the total restatement of negative material, described material comprises 70-80% active material, 5-10% amorphous carbon, 5-15% CMC and 5-10% epoxy resin, described active material is lithium-containing compound, is doped with manganese, nickel, chromium, vanadium and cobalt in the oxidate for lithium in the described compound.
2. the negative material for lithium rechargeable battery as claimed in claim 1, lithium in the wherein said lithium-containing compound: manganese: nickel: chromium: vanadium: the weight ratio of cobalt is 1-2:0.1-0.5:0.2-0.8:0.4-1:0.1-1:0.02-0.1.
3. a lithium rechargeable battery comprises
Negative pole, described negative pole comprise the described negative material of any one in the claim 1～2, positive pole, and
Electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105431033A CN103066242A (en) | 2012-12-16 | 2012-12-16 | Cathode for rechargeable lithium battery and rechargeable lithium battery with cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105431033A CN103066242A (en) | 2012-12-16 | 2012-12-16 | Cathode for rechargeable lithium battery and rechargeable lithium battery with cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103066242A true CN103066242A (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105431033A Pending CN103066242A (en) | 2012-12-16 | 2012-12-16 | Cathode for rechargeable lithium battery and rechargeable lithium battery with cathode |
Country Status (1)
| Country | Link |
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| CN (1) | CN103066242A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030190526A1 (en) * | 2002-04-03 | 2003-10-09 | Saidi Mohammed Y. | Alkali-transition metal phosphates having a 'valence non-transition element and related electrode active materials |
| CN1728442A (en) * | 2004-03-30 | 2006-02-01 | 株式会社东芝 | Nonaqueous electrolyte secondary battery |
| CN101937982A (en) * | 2009-06-30 | 2011-01-05 | 比亚迪股份有限公司 | Cathode material and battery containing same |
-
2012
- 2012-12-16 CN CN2012105431033A patent/CN103066242A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030190526A1 (en) * | 2002-04-03 | 2003-10-09 | Saidi Mohammed Y. | Alkali-transition metal phosphates having a 'valence non-transition element and related electrode active materials |
| CN1728442A (en) * | 2004-03-30 | 2006-02-01 | 株式会社东芝 | Nonaqueous electrolyte secondary battery |
| CN101937982A (en) * | 2009-06-30 | 2011-01-05 | 比亚迪股份有限公司 | Cathode material and battery containing same |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |