CN103378346A - Composite electrode for battery - Google Patents
Composite electrode for battery Download PDFInfo
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- CN103378346A CN103378346A CN2012101301609A CN201210130160A CN103378346A CN 103378346 A CN103378346 A CN 103378346A CN 2012101301609 A CN2012101301609 A CN 2012101301609A CN 201210130160 A CN201210130160 A CN 201210130160A CN 103378346 A CN103378346 A CN 103378346A
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- lithium
- battery
- transition metal
- electrode
- metal
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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
Abstract
The invention relates to a composite electrode for a battery. The composite electrode comprises a current collector, and is characterized in that an active substance layer is distributed on the upper surface of the current collector, active electrode particles, a conductive agent and an adhesive are distributed inside the active substance layer, the active electrode particles comprise lithium-containing transitional metal oxide, lithium-containing transitional metal phosphate, lithium-free transitional metal oxide, lithium-free transitional metal phosphate, metal which can form an alloy with the lithium or its alloy, oxide of metal which can form an alloy with the lithium, sulfur or sulfide or composition, and an oxidized silicon layer is distributed on the active substance layer. By adopting the composite electrode for the battery, the composite electrode is applied to a lithium battery to be used as an electrode assembly, so that the performance of the lithium battery can be effectively enhanced. Meanwhile, the cycling performance of the lithium battery is good, and the safety performance of the lithium battery is high. The short-circuit malfunction can be effectively reduced, and the specific volumetric capacity of the battery can be improved.
Description
Technical field
The present invention relates to a kind of electrode, relate in particular to a kind of battery combination electrode.
Background technology
Silica is the mobile powder of the amorphous white of synthetic material, has the strict particle size distribution of various specific areas and volume.This product is a kind of white, loose, amorphous, nontoxic, tasteless, odorless, free of contamination nonmetal oxide.Its primary particle diameter is between 7～80nm, and specific area is generally greater than 100m2/g.Because its nano effect shows the character such as remarkable reinforcement, thickening, thixotroping, insulation, delustring, resist sagging, thereby is widely used in the macromolecule industrial circles such as rubber, plastics, coating, adhesive, fluid sealant in material.
Electrode is the element of primary cell.Utilize the device of spontaneous oxidation reduction reaction generation current in primary cell, a primary cell must be comprised of two essential parts: two electrodes and electrolyte solution.Electrode is divided into negative electrode and anode, and what link to each other with positive source is anode, and oxidation reaction occurs on the anode; What link to each other with power cathode is negative electrode, and reduction reaction occurs on the negative electrode.The kind of electrolysis material is a lot, and commonly used is carbon electrode, and the metal such as titanium also can be done electrode in addition.In plating, contain the metal of coated metal often as anode, treat that plated product is as negative electrode.
Summary of the invention
Purpose of the present invention is exactly in order to solve the above-mentioned problems in the prior art, and a kind of battery combination electrode is provided.
Purpose of the present invention is achieved through the following technical solutions:
The battery combination electrode, include collector body, wherein: described collector body upper surface is distributed with active material layer, be distributed with active electrode particle and conductive agent and binding agent in the described active material layer, described active electrode particle includes the transition metal oxide that contains lithium, the phosphate that contains the transition metal of lithium, the transition metal oxide that does not contain lithium, the transition metal phosphate that does not contain lithium, can form with lithium the metal or alloy of alloy, can form with lithium the oxide of the metal of alloy, a kind of or its composition in sulphur or the sulfide is distributed with silicon oxide layer on the described active material layer.
Above-mentioned battery combination electrode, wherein: the described transition metal oxide that contains lithium is with Li
xM
yO
zBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y and z decide according to valence state and the molecular structure of contained transition metal.
Further, above-mentioned battery combination electrode, wherein: the described phosphate that contains the transition metal of lithium is with Li
xM
y(PO
4)
zBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y and z decide according to valence state and the molecular structure of contained transition metal.
Further, above-mentioned battery combination electrode, wherein: the described transition metal phosphate that does not contain lithium is with M
x(PO
4)
yBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y decide according to valence state and the molecular structure of contained transition metal.
Further, above-mentioned battery combination electrode, wherein: the described transition metal oxide that does not contain lithium is with M
xO
yBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y decide according to valence state and the molecular structure of contained transition metal.
Further, above-mentioned battery combination electrode, wherein: describedly can include Al, Si, Ga, Ge, In, Sn, Sb, Pb, Bi with the metal that lithium forms alloy, comprise simultaneously the alloy of above-mentioned metal.
Further, above-mentioned battery combination electrode, wherein: the described oxide that can form with lithium the metal of alloy is with M
xO
yBe the electrode material of general formula, M comprises Ga, Ge, In, Sn, Sb, Pb, Bi, and x and y decide according to the metallic valence state of institute and molecular structure.
Further, above-mentioned battery combination electrode, wherein: described sulphur or sulfide comprise S and with M
xS
yBe the electrode material of general formula, x, y decide according to valence state and the molecular structure of contained transition metal.
Further, above-mentioned battery combination electrode, wherein: described active material layer thickness is 1 micron to 100 millimeters.
Again further, above-mentioned battery combination electrode, wherein: described silicon oxide layer thickness is 1 nanometer to 10 micron.
The advantage of technical solution of the present invention is mainly reflected in: after adopting the present invention, be applied in the lithium battery, as its electrode assemblie, can effectively promote the battery performance of lithium battery.Simultaneously, make lithium battery good cycle, security performance height.Can effectively reduce the appearance of short trouble, improve the volume and capacity ratio of battery.
Description of drawings
Purpose of the present invention, advantage and disadvantage will be for illustration and explanation by the non-limitative illustration of following preferred embodiment.These embodiment only are the prominent examples of using technical solution of the present invention, and all technical schemes of taking to be equal to replacement or equivalent transformation and forming all drop within the scope of protection of present invention.
Fig. 1 is the organigram that battery is used combination electrode.
Embodiment
Battery combination electrode as shown in Figure 1 includes collector body 1, and its unusual part is: this practical new collector body that adopts 1 upper surface is distributed with active material layer 2.Specifically, be distributed with active electrode particle 3 and conductive agent and binding agent in the active material layer 2, and active electrode particle 3 include the transition metal oxide that contains lithium, contain the phosphate of the transition metal of lithium, do not contain lithium transition metal oxide, can with lithium form alloy metal or alloy, can form a kind of or its composition in oxide, sulphur or the sulfide of the metal of alloy with lithium.Simultaneously, be distributed with silicon oxide layer 4 on the active material layer 2.
And just the better execution mode of the present invention one considers that the operating efficiency of active material layer 2 is protected.Active material layer 2 thickness that adopt are 1 micron to 100 millimeters.
Further, be 1 nanometer to 10 micron for the battery that adapts to different size uses needs, silicon oxide layer 4 thickness of the present invention.
In conjunction with actual operating position of the present invention, its preparation process is simply as follows: at first, at the traditional electrode of collector preparation, during adopt conventional method to get final product, do not repeat them here.Afterwards, the requirement according to needed silicon oxide layer thickness prepares with corresponding way.When needed silicon oxide layer during less than 100nm, can with the way of vacuum sputtering, silica be attached to electrode surface; When required silicon oxide layer surpasses 100nm, sodium metasilicate and sulfuric acid can be reacted in aqueous systems, then electrode slice be immersed in the reaction tank, soak 5-20 and take out oven dry after second, and then take out oven dry after immersing, by repeatedly obtaining the silicon oxide layer of different-thickness; When required silicon oxide layer surpasses 1 micron, sodium metasilicate and sulfuric acid can be reacted in aqueous systems, the while is cleaned the orthosilicic acid sedimentation and filtration that obtains, and then, utilizes scraper with the surface of orthosilicic acid blade coating to electrode, then dries to get final product.
Each material proportioning situation of actual preparation is as follows:
Can find out by above-mentioned character express, behind employing the present invention, be applied in the lithium battery, as its electrode assemblie, can effectively promote the battery performance of lithium battery.Simultaneously, make lithium battery good cycle, security performance height.Can effectively reduce the appearance of short trouble, improve the volume and capacity ratio of battery.
Claims (10)
1. battery combination electrode, include collector body, it is characterized in that: described collector body upper surface is distributed with active material layer, be distributed with active electrode particle and conductive agent and binding agent in the described active material layer, described active electrode particle includes the transition metal oxide that contains lithium, the phosphate that contains the transition metal of lithium, the transition metal oxide that does not contain lithium, the transition metal phosphate that does not contain lithium, can form with lithium the metal or alloy of alloy, can form with lithium the oxide of the metal of alloy, a kind of or its composition in sulphur or the sulfide is distributed with silicon oxide layer on the described active material layer.
2. battery electrode assembly according to claim 1, it is characterized in that: the described transition metal oxide that contains lithium is with Li
xM
yO
zBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y and z decide according to valence state and the molecular structure of contained transition metal.
3. battery electrode assembly according to claim 1, it is characterized in that: the described phosphate that contains the transition metal of lithium is with Li
xM
y(PO
4)
zBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y and z decide according to valence state and the molecular structure of contained transition metal.
4. battery electrode assembly according to claim 1, it is characterized in that: the described transition metal phosphate that does not contain lithium is with M
x(PO
4)
yBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y decide according to valence state and the molecular structure of contained transition metal.
5. battery electrode assembly according to claim 1, it is characterized in that: the described transition metal oxide that does not contain lithium is with M
xO
yBe the electrode material of general formula, M is a kind of or two kinds or two or more metal, and x, y decide according to valence state and the molecular structure of contained transition metal.
6. battery electrode assembly according to claim 1 is characterized in that: describedly can include Al, Si, Ga, Ge, In, Sn, Sb, Pb, Bi with the metal that lithium forms alloy, comprise simultaneously the alloy of above-mentioned metal.
7. battery electrode assembly according to claim 1, it is characterized in that: the described oxide that can form with lithium the metal of alloy is with M
xO
yBe the electrode material of general formula, M comprises Ga, Ge, In, Sn, Sb, Pb, Bi, and x and y decide according to the metallic valence state of institute and molecular structure.
8. battery electrode assembly according to claim 1 is characterized in that: described sulphur or sulfide comprise S and with M
xS
yBe the electrode material of general formula, x, y decide according to valence state and the molecular structure of contained transition metal.
9. battery combination electrode according to claim 1, it is characterized in that: described active material layer thickness is 1 micron to 100 millimeters.
10. battery combination electrode according to claim 1 is characterized in that: described silicon oxide layer thickness is 1 nanometer to 10 micron.
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| CN2012101301609A CN103378346A (en) | 2012-04-28 | 2012-04-28 | Composite electrode for battery |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427495A (en) * | 2001-12-07 | 2003-07-02 | 三星Sdi株式会社 | Electrode, lithium cell with same and mfg. method thereof |
| CN101331630A (en) * | 2006-05-23 | 2008-12-24 | 索尼株式会社 | Negative electrode and its manufacturing method, and battery and its manufacturing method |
| US20100143799A1 (en) * | 2008-12-05 | 2010-06-10 | Samsung Sdi Co., Ltd Of | Cathode and lithium battery using the same |
| CN101796670A (en) * | 2007-11-12 | 2010-08-04 | 日立麦克赛尔株式会社 | Electrode for nonaqueous secondary battery, nonaqueous secondary battery using the same, and method for producing electrode |
| CN102201565A (en) * | 2011-04-14 | 2011-09-28 | 杭州万好万家动力电池有限公司 | High-capacity metal lithium powder composite cathode and preparation method thereof, and multi-layer composite electrode |
| CN102318126A (en) * | 2009-05-14 | 2012-01-11 | 松下电器产业株式会社 | Electrode for lithium ion secondary battery and lithium rechargeable battery |
-
2012
- 2012-04-28 CN CN2012101301609A patent/CN103378346A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427495A (en) * | 2001-12-07 | 2003-07-02 | 三星Sdi株式会社 | Electrode, lithium cell with same and mfg. method thereof |
| CN101331630A (en) * | 2006-05-23 | 2008-12-24 | 索尼株式会社 | Negative electrode and its manufacturing method, and battery and its manufacturing method |
| CN101796670A (en) * | 2007-11-12 | 2010-08-04 | 日立麦克赛尔株式会社 | Electrode for nonaqueous secondary battery, nonaqueous secondary battery using the same, and method for producing electrode |
| US20100143799A1 (en) * | 2008-12-05 | 2010-06-10 | Samsung Sdi Co., Ltd Of | Cathode and lithium battery using the same |
| CN102318126A (en) * | 2009-05-14 | 2012-01-11 | 松下电器产业株式会社 | Electrode for lithium ion secondary battery and lithium rechargeable battery |
| CN102201565A (en) * | 2011-04-14 | 2011-09-28 | 杭州万好万家动力电池有限公司 | High-capacity metal lithium powder composite cathode and preparation method thereof, and multi-layer composite electrode |
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Application publication date: 20131030 |