CN104393234A - Modified lithium ion battery composite positive pole material and preparation method thereof - Google Patents

Modified lithium ion battery composite positive pole material and preparation method thereof Download PDF

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Publication number
CN104393234A
CN104393234A CN201410673262.4A CN201410673262A CN104393234A CN 104393234 A CN104393234 A CN 104393234A CN 201410673262 A CN201410673262 A CN 201410673262A CN 104393234 A CN104393234 A CN 104393234A
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lithium
ion battery
modification
battery composite
lithium ion
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毛玉琴
韩珽
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Haining Mei Darui New Material Science And Technology Ltd
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Haining Mei Darui New Material Science And Technology Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • 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 modified lithium ion battery composite positive pole material and a preparation method thereof. The modified lithium ion battery composite positive pole material comprises a positive pole material and a lithium fast ion conductor material, wherein the positive pole material is nickel-cobalt lithium manganate, nickel-cobalt lithium aluminate, lithium manganate, lithium cobaltate, lithium iron phosphate, iron manganese lithium phosphate, nickel lithium cobaltate or nickel lithium manganate; the lithium fast ion conductor material is Li10GeP2S12; and the mole ratio of the lithium fast ion conductor material to the positive pole material is (0.001-0.2):1. According to the modified lithium ion battery composite positive pole material, the lithium fast ion conductor material coats the positive pole material or carries out bulk phase doping modification on the positive pole material, so that the conductivity of the positive pole material is enhanced, and the first-time efficiency and magnification property of a battery are enhanced; the charge and discharge are completed, and the decomposition of electrolyte at high voltage is prevented, so that the cycle life of an ion battery is prolonged and the stability of the ion battery is enhanced.

Description

Lithium ion battery composite cathode material of a kind of modification and preparation method thereof
Technical field
The present invention relates to a kind of lithium ion battery, particularly relate to lithium ion battery composite cathode material of a kind of modification and preparation method thereof.
Background technology
The plurality of advantages such as energy density is high owing to having for lithium ion battery, discharge voltage is comparatively stable, memory-less effect, operating temperature range are wide, pollution-free, have extended cycle life, security performance is good, since appearance, be widely used in mobile communications tool and the portable electric appts such as camera, notebook.Along with the enhancing of mobile battery product function, and lithium ion battery is to the development in small-sized electric tool field, had higher requirement in the energy density of lithium ion battery, security performance, the aspect such as cycle life and multiplying power discharging, and the development of these aspects is mainly limited to positive electrode.
The maximum lithium ion anode material of current application mainly contains cobalt acid lithium, lithium nickelate, LiMn2O4 and cobalt nickel lithium manganate ternary material.Cobalt acid lithium is industrialization the earliest and business-like material, the chemical property of cobalt acid lithium is comparatively stablized, conduct electricity very well, voltage platform is higher, good cycle, compacted density can reach 4.0g/cm3, but the specific capacity of cobalt acid lithium is relatively low, only has 140mAh/g, and cobalt toxicity is larger, cobalt resource is rare, expensive, and its over-charge safety performance is poor.Lithium nickelate synthesis difficulty, the poor reproducibility of material; Although layered lithium manganate has higher specific capacity, structural stability is poor, and the LiMn2O4 specific capacity of spinel-type is lower, and the structure under high temperature has to be strengthened.Although cobalt nickel lithium manganate ternary material combines the performance of cobalt acid lithium, lithium nickelate and LiMn2O4, there is Heat stability is good, the features such as under high potential the high and cost of material of specific capacity is low, but ternary material voltage platform is lower, platform discharge time is short, compacted density also lower, cycle performance is poor.
In order to improve positive electrode, conventional method carries out coating modification to positive pole material surface.At present, the Surface coating reported comprises: containing metal oxides such as magnesium, aluminium, zirconium, titaniums, containing metal fluorides etc. such as aluminium, magnesium, titanium, zirconiums.Metal oxide effectively can stop the reaction of positive electrode and electrolyte, improves the cycle performance of lithium ion battery; Metal fluoride layer can suppress the hydrofluoric acid of electrolyte and the reaction of active material, reduce the capacity attenuation of battery in charge and discharge cycles, but metallic compound does not have good conductivity, the diffusion velocity of lithium ion in this coating layer is slower, positive electrode conductive capability is caused to be deteriorated, increase the internal resistance of cell, have impact on the discharge-rate of battery, reduce the chemical property of battery.
Summary of the invention
The object of the invention is to, lithium ion battery composite cathode material of a kind of modification and preparation method thereof is provided, the method adopts lithium fast-ionic conductor material to carry out modification to lithium ion anode material, effectively can improve the electric conductivity of positive electrode, high rate performance and cycle performance.
To achieve these goals, present invention employs following technical scheme:
Technical scheme one: a kind of lithium ion battery composite cathode material of modification, is characterized in that, is made up of positive electrode and lithium fast-ionic conductor material.
As preferably, described positive electrode is nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiMn2O4, cobalt acid lithium, LiFePO4, lithium ferric manganese phosphate, lithium nickel cobalt dioxide or nickel ion doped; Described lithium fast-ionic conductor material is Li 10geP 2s 12; Described lithium fast-ionic conductor material and the mol ratio of positive electrode are 0.001 ~ 0.2:1.
As further preferred, described lithium fast-ionic conductor material and the mol ratio of positive electrode are 0.005 ~ 0.1:1.
Technical scheme two: a kind of preparation method of lithium ion battery composite cathode material of the modification as described in technical scheme one, is characterized in that, is coated on positive electrode surface by described lithium fast-ionic conductor material.
Technical scheme three: a kind of preparation method of lithium ion battery composite cathode material of the modification as described in technical scheme one, is characterized in that, carries out bulk phase-doped modified by described lithium fast-ionic conductor material to positive electrode.
Technical scheme four: a kind of preparation method of lithium ion battery composite cathode material of the modification as described in technical scheme one, it is characterized in that, described lithium fast-ionic conductor material is carried out bulk phase-doped modified to positive electrode and is coated on positive electrode surface simultaneously.
Technical scheme five: a kind of preparation method of lithium ion battery composite cathode material of the modification as described in technical scheme one, it is characterized in that, comprise the following steps: after being mixed according to the stoichiometric proportion of modification lithium-ion battery composite positive pole to be prepared by the raw material prepared needed for positive electrode and lithium fast-ionic conductor, in atmosphere furnace, namely obtain the lithium ion battery composite cathode material of modification through high temperature solid-phase sintering.
Technical scheme six: a kind of preparation method of lithium ion battery composite cathode material of the modification as described in technical scheme one, it is characterized in that, comprise the following steps: first take according to the stoichiometric proportion of the lithium ion battery composite cathode material of modification to be prepared and prepare positive electrode and lithium fast-ionic conductor needed raw material prepares positive electrode and lithium fast-ionic conductor respectively, then, after adopting solid phase method or liquid phase method to make the two mix, in atmosphere furnace, namely high temperature solid-phase sintering obtains the lithium ion battery composite cathode material of modification.
Technical scheme seven: a kind of preparation method of lithium ion battery composite cathode material of the modification as described in technical scheme one, it is characterized in that, comprise the following steps: first taking according to the stoichiometric proportion of the lithium ion battery composite cathode material of modification to be prepared the raw material prepared required for positive electrode prepares positive electrode, take according to the stoichiometric proportion of the lithium ion battery composite cathode material of modification to be prepared the raw material prepared required for lithium fast-ionic conductor material again and be mixed with solution, then obtained positive electrode is joined after mixing in this solution, in atmosphere furnace, namely high temperature solid-phase sintering obtains the lithium ion battery composite cathode material of modification.
Compared with prior art, great advantage of the present invention and beneficial effect as follows:
(1) Li 10geP 2s 12it is a kind of material with three-dimensional lattice structure, its three dimensional skeletal structure is that the conduction of lithium ion provides continuous print spatial channel, there is in lattice the aperture allowing ion to pass through, the passage that layer structure has become to allow ion move, there is larger thermal vibration in lithium ion above-below direction, thus improve the conductivity of material, improve efficiency first and the high rate performance of battery.
(2) utilize lithium fast-ionic conductor to carry out surface modification to positive electrode, coating layer is made while isolated electrolyte and positive electrode, lithium ion freely to be passed through, thus while completing discharge and recharge, avoid electrolyte decomposition under high voltages, improve cycle life and the stability of ion battery.
Accompanying drawing explanation
Fig. 1 is the first charge-discharge curve chart of the lithium ion battery composite cathode material of the modification of embodiment 1.
Fig. 2 is the cycle charge-discharge curve chart of the lithium ion battery composite cathode material of the modification of embodiment 1.
Fig. 3 is the discharge curve of lithium ion battery composite cathode material under different multiplying of the modification of embodiment 1.
Embodiment
In order to have darker understanding to the present invention; below in conjunction with embodiment, technical scheme is clearly and completely described; but embodiments of the invention are only used to explain the present invention; and unrestricted the present invention; the every other case study on implementation that those skilled in the art obtain under the prerequisite not making creative work, all belongs to protection scope of the present invention.
Embodiment 1:
With nickel hydroxide, cobaltosic oxide, aluminium oxide and lithium carbonate for LiNi pressed by raw material 0.8co 0.15al 0.05o 2stoichiometric proportion prepare burden, after mixing, 800 DEG C of constant temperature 20h in oxygen atmosphere.With lithium sulfide, germanium sulfide and phosphoric sulfide for Li pressed by raw material 10geP 2s 12stoichiometric proportion prepare burden, after mixing, 550 DEG C of constant temperature 8h in air atmosphere.Again with LiNi 0.8co 0.15al 0.05o 2for matrix, by Li 10geP 2s 12be coated on blapharoplast surface, wherein LiNi 0.8co 0.15al 0.05o 2and Li 10geP 2s 12mol ratio be 1:0.05.
The electrochemical property test of material adopts blue electric battery test system to test at 25 DEG C, high rate performance test condition: test voltage scope be 3V ~ 4.3V, 0.2C discharge and recharge once, the 0.2C 0.5C/1C/5C/10C that charges respectively discharges once; Cycle performance test condition: test voltage scope is 2.7V ~ 4.3V, carries out discharge and recharge with 1C multiplying power, circulates 500 weeks, investigates capability retention.The specific discharge capacity of material under 0.2C multiplying power is 190mAh/g, under 0.5C multiplying power, specific discharge capacity is 185 mAh/g, specific discharge capacity under 1C multiplying power is 180mAh/g, specific discharge capacity under 5C multiplying power is 171mAh/g, specific discharge capacity under 10C multiplying power is 161.5mAh/g, 10C/0.2C electric discharge ratio is 85%, and high rate performance is better.1C charge and discharge cycles 500 weeks capability retentions are greater than 93%, and cycle performance is better.
Embodiment 2:
With nickel hydroxide, cobaltosic oxide, manganese oxide, lithium carbonate, lithium sulfide, germanium sulfide and phosphoric sulfide for raw material, be LiNi by the lithium ion battery composite cathode material composition of gained modification 0.5co 0.2mn 0.3o 20.01Li 10geP 2s 12stoichiometric proportion prepare burden, after mixing, in oxygen atmosphere, 800 DEG C of constant temperature 20h, obtain Li 10geP 2s 12bulk phase-doped LiNi 0.5co 0.2mn 0.3o 2composite positive pole.
Embodiment 3:
With ferrous oxalate, ammonium dihydrogen phosphate and lithium carbonate for LiFePO pressed by raw material 4stoichiometric proportion prepare burden, after mixing, in nitrogen atmosphere, 800 DEG C of constant temperature 24h, obtain LiFePO 4positive electrode.With lithium sulfide, germanium sulfide and phosphoric sulfide for Li pressed by raw material 10geP 2s 12stoichiometric proportion prepare burden, and above-mentioned raw materials is joined in weak caustic solution, under the condition stirred, adds LiFePO 4positive electrode, after drying in air atmosphere 550 DEG C of constant temperature 8h, obtain Li 10geP 2s 12coated LiFePO 4composite positive pole, wherein LiFePO 4and Li 10geP 2s 12mol ratio be 1:0.03.
Embodiment 4:
With cobaltosic oxide, lithium carbonate, lithium sulfide, germanium sulfide and phosphoric sulfide for raw material, be LiCoO by the lithium ion battery composite cathode material composition of gained modification 20.01Li 10geP 2s 12stoichiometric proportion prepare burden, after mixing, in oxygen atmosphere, 800 DEG C of constant temperature 20h, obtain Li 10geP 2s 12bulk phase-doped LiCoO 2positive electrode.With lithium sulfide, germanium sulfide and phosphoric sulfide for Li pressed by raw material 10geP 2s 12stoichiometric proportion prepare burden, after mixing, 550 DEG C of constant temperature 8h in air atmosphere.Again with LiCoO 20.01Li 10geP 2s 12for matrix, by Li 10geP 2s 12be coated on blapharoplast surface, wherein LiFePO 40.01Li 10geP 2s 12and Li 10geP 2s 12mol ratio be 1:0.04.
Embodiment 5:
With manganese dioxide and lithium carbonate for raw material, by LiMn 2o 4stoichiometric proportion prepare burden, after mixing, 750 DEG C of constant temperature 15h in oxygen atmosphere, cooling, after pulverizing, 820 DEG C of constant temperature 20h, obtain LiMn 2o 4positive electrode.With with lithium sulfide, germanium sulfide and phosphoric sulfide for Li pressed by raw material 10geP 2s 12stoichiometric proportion prepare burden, after mixing, 600 DEG C of constant temperature 7h in air atmosphere.Again with LiMn 2o 4for matrix, by Li 10geP 2s 12be coated on blapharoplast surface, wherein LiMn 2o 4and Li 10geP 2s 12mol ratio be 1:0.05.
The present invention is equally applicable to other lithium ion anode materials and Li 10geP 2s 12the compound of lithium fast-ionic conductor, as lithium ferric manganese phosphate, lithium nickel cobalt dioxide or nickel ion doped.

Claims (9)

1. a lithium ion battery composite cathode material for modification, is characterized in that, is made up of positive electrode and lithium fast-ionic conductor material.
2. the lithium ion battery composite cathode material of modification as claimed in claim 1, is characterized in that, described positive electrode is nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiMn2O4, cobalt acid lithium, LiFePO4, lithium ferric manganese phosphate, lithium nickel cobalt dioxide or nickel ion doped; Described lithium fast-ionic conductor material is Li 10geP 2s 12; Described lithium fast-ionic conductor material and the mol ratio of positive electrode are 0.001 ~ 0.2:1.
3. the lithium ion battery composite cathode material of modification as claimed in claim 1 or 2, it is characterized in that, described lithium fast-ionic conductor material and the mol ratio of positive electrode are 0.005 ~ 0.1:1.
4. a preparation method for the lithium ion battery composite cathode material of modification as claimed in claim 1 or 2, is characterized in that, described lithium fast-ionic conductor material is coated on positive electrode surface.
5. a preparation method for the lithium ion battery composite cathode material of modification as claimed in claim 1 or 2, is characterized in that, carries out bulk phase-doped modified by described lithium fast-ionic conductor material to positive electrode.
6. a preparation method for the lithium ion battery composite cathode material of modification as claimed in claim 1 or 2, is characterized in that, carries out bulk phase-doped modified and be coated on positive electrode surface simultaneously by described lithium fast-ionic conductor material to positive electrode.
7. the preparation method of the lithium ion battery composite cathode material of a modification as claimed in claim 1 or 2, it is characterized in that, comprise the following steps: after being mixed according to the stoichiometric proportion of modification lithium-ion battery composite positive pole to be prepared by the raw material prepared needed for positive electrode and lithium fast-ionic conductor, in atmosphere furnace, namely obtain the lithium ion battery composite cathode material of modification through high temperature solid-phase sintering.
8. the preparation method of the lithium ion battery composite cathode material of a modification as claimed in claim 1 or 2, it is characterized in that, comprise the following steps: first take according to the stoichiometric proportion of the lithium ion battery composite cathode material of modification to be prepared and prepare positive electrode and lithium fast-ionic conductor needed raw material prepares positive electrode and lithium fast-ionic conductor respectively, then, after adopting solid phase method or liquid phase method to make the two mix, in atmosphere furnace, namely high temperature solid-phase sintering obtains the lithium ion battery composite cathode material of modification.
9. the preparation method of the lithium ion battery composite cathode material of a modification as claimed in claim 1 or 2, it is characterized in that, comprise the following steps: first taking according to the stoichiometric proportion of the lithium ion battery composite cathode material of modification to be prepared the raw material prepared required for positive electrode prepares positive electrode, take according to the stoichiometric proportion of the lithium ion battery composite cathode material of modification to be prepared the raw material prepared required for lithium fast-ionic conductor material again and be mixed with solution, then obtained positive electrode is joined after mixing in this solution, in atmosphere furnace, namely high temperature solid-phase sintering obtains the lithium ion battery composite cathode material of modification.
CN201410673262.4A 2014-11-21 2014-11-21 Modified lithium ion battery composite positive pole material and preparation method thereof Pending CN104393234A (en)

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Cited By (11)

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CN105304905A (en) * 2015-09-23 2016-02-03 合肥国轩高科动力能源有限公司 Modified material for positive electrode of lithium ion battery and preparation method of modified material
CN106340646A (en) * 2016-09-22 2017-01-18 合肥国轩高科动力能源有限公司 Spherical multiphase LiMnFePO4 material and preparation method thereof
CN107017388A (en) * 2017-02-09 2017-08-04 上海蔚来汽车有限公司 A kind of preparation method of composite positive pole for solid lithium ion battery
CN108206277A (en) * 2016-12-20 2018-06-26 宁德时代新能源科技股份有限公司 Modified high-nickel ternary cathode material, preparation method thereof and lithium ion battery
CN108520947A (en) * 2018-04-08 2018-09-11 广州鹏辉能源科技股份有限公司 Modified phosphate iron lithium material, lithium ion battery, power battery pack and its application
CN108963246A (en) * 2018-06-19 2018-12-07 中航锂电（洛阳）有限公司 A kind of anode material for lithium-ion batteries and preparation method thereof, lithium ion battery
CN109818048A (en) * 2019-03-04 2019-05-28 江西星盈科技有限公司 All solid lithium metal battery and its preparation process
CN110459753A (en) * 2019-08-29 2019-11-15 北京理工大学 A kind of solid lithium ion battery composite positive pole
CN113471414A (en) * 2020-03-31 2021-10-01 北京卫蓝新能源科技有限公司 Lithium ion battery composite positive electrode material and preparation method and application thereof
CN113517424A (en) * 2021-04-27 2021-10-19 湖南杉杉能源科技股份有限公司 Cobalt-free positive electrode material of high-voltage lithium ion battery and preparation method thereof
CN114068889A (en) * 2020-08-06 2022-02-18 东莞新能安科技有限公司 Cathode material, electrochemical device and electronic device containing the same

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Publication number Priority date Publication date Assignee Title
CN105304905A (en) * 2015-09-23 2016-02-03 合肥国轩高科动力能源有限公司 Modified material for positive electrode of lithium ion battery and preparation method of modified material
CN106340646A (en) * 2016-09-22 2017-01-18 合肥国轩高科动力能源有限公司 Spherical multiphase LiMnFePO4 material and preparation method thereof
CN108206277A (en) * 2016-12-20 2018-06-26 宁德时代新能源科技股份有限公司 Modified high-nickel ternary cathode material, preparation method thereof and lithium ion battery
CN107017388A (en) * 2017-02-09 2017-08-04 上海蔚来汽车有限公司 A kind of preparation method of composite positive pole for solid lithium ion battery
CN108520947A (en) * 2018-04-08 2018-09-11 广州鹏辉能源科技股份有限公司 Modified phosphate iron lithium material, lithium ion battery, power battery pack and its application
CN108963246A (en) * 2018-06-19 2018-12-07 中航锂电（洛阳）有限公司 A kind of anode material for lithium-ion batteries and preparation method thereof, lithium ion battery
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CN110459753A (en) * 2019-08-29 2019-11-15 北京理工大学 A kind of solid lithium ion battery composite positive pole
CN110459753B (en) * 2019-08-29 2020-12-04 北京理工大学 Composite positive electrode material for solid-state lithium ion battery
CN113471414A (en) * 2020-03-31 2021-10-01 北京卫蓝新能源科技有限公司 Lithium ion battery composite positive electrode material and preparation method and application thereof
CN114068889A (en) * 2020-08-06 2022-02-18 东莞新能安科技有限公司 Cathode material, electrochemical device and electronic device containing the same
CN113517424A (en) * 2021-04-27 2021-10-19 湖南杉杉能源科技股份有限公司 Cobalt-free positive electrode material of high-voltage lithium ion battery and preparation method thereof

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Application publication date: 20150304