CN103996843B - A kind of porous LiMn2O4 nanometer sheet and preparation method thereof - Google Patents

A kind of porous LiMn2O4 nanometer sheet and preparation method thereof Download PDF

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CN103996843B
CN103996843B CN201410221391.XA CN201410221391A CN103996843B CN 103996843 B CN103996843 B CN 103996843B CN 201410221391 A CN201410221391 A CN 201410221391A CN 103996843 B CN103996843 B CN 103996843B
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nanometer sheet
bagasse
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nitrate
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CN103996843A (en
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徐华蕊
颜东亮
朱归胜
张欢
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Guilin University of Electronic Technology
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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
    • H01M4/48—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • 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
    • 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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  • Condensed Matter Physics & Semiconductors (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
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Abstract

The invention discloses a kind of porous LiMn2O4 nanometer sheet and preparation method thereof, the present invention adopts bagasse as going back Template preparation porous LiMn2O4 nanometer sheet, and processing step is: (1) bagasse process, (2) mixed liquor is prepared, (3) adsorb, (4) calcine, and (5) are cleaned.Passing through and detecting this porous LiMn2O4 nanometer sheet gauge is 20-50 nanometer, because it has good chemical property, can be used as water system lithium electricity electrode material.The present invention compared with prior art, preparation technology is simple, low cost, environmental protection, aboundresources, product has application advantage, has good economic benefit, social benefit and ecological benefits.

Description

A kind of porous LiMn2O4 nanometer sheet and preparation method thereof
Technical field
The present invention relates to the technical field of aquo-lithium ion battery, particularly a kind of porous LiMn2O4 nanometer sheet and preparation method thereof.
Background technology
The charge-discharge principle of lithium ion battery is a kind of motion state that lithium ion is in from positive pole → negative pole → positive pole.This is just as a rocking chair, and the two ends of rocking chair are the two poles of the earth of battery, and lithium ion just moves back and forth at rocking chair two ends.People call this electrochemical energy storage system " rocking chair type battery " visually.Lithium ion battery at portable electric appts, as: to obtain in mobile phone, notebook computer and camera etc. applying widely.But the electrolyte used due to the lithium ion battery used at present is organic electrolyte, its fail safe and quick charge and discharge performance are limited by very large.And aquo-lithium ion battery, namely adopt the aqueous solution to be that the lithium ion battery of electrolyte just in time overcomes above-described deficiency, therefore aquo-lithium ion battery receives increasing concern, has also become future development to obtain important directions.
Due to promoter manganese rich content, cheap, LiMn2O4 (LiMn 2o 4) to receive as the electrode material of lithium ion battery and pay close attention to widely.The general preparation method of LiMn2O4 is that the LiMn2O4 that this method prepares has larger particle size, generally from several microns to tens microns by calcining manganese salt and lithium salts.The nanometer of electrode material is improve the main striving direction of its chemical property always.Particularly two-dimension nano materials amasss because significantly increase with the contact of electrolyte in recent years, shortens lithium ion transport path, has been subjected to extensive research, as the people such as Li report V 2o 5the preparation of two-dimensional nano sheet, shows good chemical property (YanweiLi, JinhuanYao, EvanUchaker, JianwenYang, YunxiaHuang, MingZhang, GuozhongCao.Leaf-likeV 2o 5nanosheetsfabricatedbyafacilegreenapproachashighenergyca thodematerialforlithium-ionbatteries [J] .AdvancedEnergyMaterials, 2013, 3:1171-1175) and the people such as Liu report ultra-thin two-dimension TiOx nano sheet and excellent energy-storage property (JiehuaLiu thereof, JunSongChen, XiangfengWei, XiongWenLou, XueWeiLiu.Sandwich-like, stackedultrathintitanatenanosheetsforultrafastlithiumsto rage [J] .AdvancedMaterials, 2011, 23 (8): 998-1002).
Environmental protection, recycle be modern society advocate life style, the processing mode of therefore environmental protection is the key subjects that people are badly in need of.But, existing nanometer lithium manganate processing mode is complicated, cost is higher, the technical disadvantages such as not environmentally, there is a lot of deficiencies in the mangaic acid reason electrode material relative two dimensional material of the loose structure of the one dimension of preparation, be therefore badly in need of finding a kind ofly have that processing is easy, method that porous two dimension LiMn2O4 nanometer sheet is prepared in low cost, environmental protection.
Summary of the invention
The object of the invention is the deficiency of the technology of preparing for existing porous LiMn2O4 nanometer sheet, discarded bagasse is adopted to be Template preparation porous LiMn2O4 nanometer sheet, obtained porous LiMn2O4 nanometer sheet is porous two dimension LiMn2O4 nanometer sheet electrode material, this material has good capacitance characteristic and higher energy storage characteristic, of the present inventionly has that preparation method is easy, a kind of porous LiMn2O4 nanometer sheet of low cost and environmental protection and preparation method thereof.
The present invention is achieved in that
A kind of porous LiMn2O4 nanometer sheet, is characterized in that: described porous LiMn2O4 nanometer sheet is porous two dimension LiMn2O4 nanometer sheet, and LiMn2O4 nanometer sheet thickness is 20-50 nanometer; Described porous LiMn2O4 nanometer sheet is that the manganese nitrate of template and 75-85 weight portion and the mixed aqueous solution of lithium nitrate are prepared from by the bagasse of 15-25 weight portion.
Above-described porous LiMn2O4 nanometer sheet is that the manganese nitrate of template and 80 weight portions and the mixed aqueous solution of lithium nitrate are prepared from by the bagasse of 20 weight portions.
A preparation method for porous LiMn2O4 nanometer sheet, is characterized in that: concrete steps:
(1) bagasse process: by the bagasse washed with de-ionized water post-drying gathered, the bagasse that oven dry obtains is for subsequent use;
(2) prepare mixed liquor: the manganese nitrate and lithium nitrate that necessarily mix mol ratio are mixed with mixed solution by a certain amount of and a certain amount of deionized water, obtained lithium nitrate and manganese nitrate mixed solution for subsequent use;
(3) adsorb: the bagasse of step (1) is immersed in the mixed liquor of step (2), after bagasse soaks into completely, bagasse is taken out, and dry under being placed in uniform temperature;
(4) calcine: a period of time calcined by the bagasse after step (3) being dried;
(5) clean: the products in water cleaning after step (4) is calcined, and dry at a certain temperature, obtain porous LiMn2O4 nanometer sheet.
Manganese nitrate described in above step (2) and the mixed aqueous solution of lithium nitrate are prepared into by the deionized water of the manganese nitrate of 5-15 weight portion and lithium nitrate mixture and 85-95 weight portion; The mixing mol ratio of described manganese nitrate and lithium nitrate mixture is 2:1.
The control temperature of the oven dry described in above step (3) is 55-65 DEG C.
The temperature that calcining described in above step (4) controls is 600-800 DEG C, and the time is 2-5 hour.
Bake out temperature described in above step (5) is 100-120 DEG C.
Advantage of the present invention and good effect:
1, the present invention adopts discarded bagasse to be Template preparation porous LiMn2O4 nanometer sheet, provides a kind of better method, resource can be utilized more fully for recycling discarded bagasse.
2, the present invention take bagasse as Template preparation porous ultra-thin two-dimension LiMn2O4 nanometer sheet, obtained two-dimentional LiMn2O4 nanometer sheet is 20-50 nanometer through detecting the thickness of nanometer sheet, it is thin that this two-dimentional LiMn2O4 nanometer sheet has thickness, the design feature of porous, and the electrode material of porous also can increase the contact area with electrolyte, improve the utilance of active material, thus improve its chemical property, therefore obtained porous ultra-thin two-dimension LiMn2O4 nanometer sheet has good chemical property, it is good electrode material, the electrode material of obtained aquo-lithium ion battery advantageously, be applicable to using widely.
3, compared with the LiMn2O4 nanometer sheet that prepared by the present invention and prior art, the advantages such as the preparation method had is simple, cost is low, environmental protection, aboundresources, electrode material more has application advantage, has good economic benefit, social benefit and ecological benefits.
Accompanying drawing explanation
Fig. 1 is the X-ray diffractogram of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into;
Fig. 2 is the scanning electron microscope (SEM) photograph under the low enlargement ratio of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into;
Fig. 3 is the scanning electron microscope (SEM) photograph under the high magnification of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into;
Fig. 4 is the transmission electron microscope picture of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into;
Fig. 5 is that the electrode of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into is at 0.5MLi 2sO 4in cyclic voltammetry curve;
Fig. 6 is that the electrode of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into is at 0.5MLi 2sO 4in, current density is 0.5Ag -1time-measuring electric potential curve;
Fig. 7 is that the electrode of the porous LiMn2O4 nanometer sheet that the embodiment of the present invention 1 is prepared into is at 0.5MLi 2sO 4in the test of 200 cyclical stabilities (current density is 1Ag -1).
Embodiment
Further illustrate outstanding feature of the present invention below by example, and never limit the present invention.
Embodiment 1:
The bagasse water collected is cleaned post-drying, preparation lithium nitrate (LiNO 3) and manganese nitrate (Mn (NO 3) 24H 2o) mixed solution, is dissolved in the lithium nitrate of 10 kilograms and the mixture of manganese nitrate in 90 kilograms of deionized waters, and keeps lithium nitrate and manganese nitrate mol ratio to be 1:2.Then the bagasse of 20 kilograms is immersed in 80 kilograms of preparation lithium nitrates and manganese nitrate mixed solution, after bagasse soaks into completely, bagasse is taken out, dry under being placed in 60 DEG C of environment.Then the bagasse being adsorbed with lithium nitrate and manganese nitrate 700 DEG C of calcinings 3 hours in air atmosphere.Porous LiMn2O4 nanometer sheet is obtained finally by washing and oven dry.
Detect: it is lithium manganate having spinel structure (shown in accompanying drawing 1) that XRD characterizes this product of display, spread out peak and the LiMn of sample 2o 4(JCPDS card number: 35-0782) standard card coincide better.Can learn that the pattern of LiMn2O4 is sheet (shown in accompanying drawing 2) from the ESEM photograph of product, the photograph of ESEM shown in 3 can find out that gained nanometer sheet thickness is about 30-40 nanometer with reference to the accompanying drawings, with reference to the accompanying drawings 3 ESEM photograph and accompanying drawing 4 transmission electron microscope picture shown in can find out the porosity characteristic of gained nanometer sheet.
The sheet LiMn2O4 powder prepared is prepared into electrode, at 0.5MLi 2sO 4in, potential region is that 0-1 volt carries out cyclic voltammetric performance test, can find that electrode has good electrochemical properties (described in accompanying drawing 5).By the electrode for preparing at 0.5MLi 2sO 4middle current density is 0.5Ag -1lower test constant current charge and discharge performance (described in accompanying drawing 6), can find that the specific capacity of electrode of the present invention is 136mAh/g, can be used as lithium electricity electrode material and uses.In addition, electrode has good cyclical stability, and after 200 circulations, capacitance loss is only 2%(current density is 1Ag -1) (described in accompanying drawing 7).
Embodiment 2:
The bagasse water collected is cleaned post-drying, preparation lithium nitrate (LiNO 3) and manganese nitrate (Mn (NO 3) 24H 2o) mixed solution, is dissolved in the lithium nitrate of 10 kilograms and the mixture of manganese nitrate in 90 kilograms of deionized waters, and keeps lithium nitrate and manganese nitrate mol ratio to be 1:2.Then the bagasse of 15 kilograms is immersed in 85 kilograms of preparation lithium nitrates and manganese nitrate mixed solution, after bagasse soaks into completely, bagasse is taken out, dry under being placed in 65 DEG C of environment.Then the bagasse being adsorbed with lithium nitrate and manganese nitrate 700 DEG C of calcinings 2.5 hours in air atmosphere, finally by washing and dry and obtain porous LiMn2O4 nanometer sheet.
Detect: it is lithium manganate having spinel structure that XRD characterizes this product of display, spread out peak and the LiMn of sample 2o 4(JCPDS card number: 35-0782) standard card coincide better.Can learn that the pattern of LiMn2O4 is sheet from the ESEM photograph of product, ESEM photograph can find out that gained nanometer sheet thickness is about 20-40 nanometer, from the porosity characteristic can finding out gained nanometer sheet shown in ESEM photograph and transmission electron microscope picture.
The sheet LiMn2O4 powder prepared is prepared into electrode, at 0.5MLi 2sO 4in, potential region is that 0-1 volt carries out cyclic voltammetric performance test, can find that electrode has good electrochemical properties.Be 0.5Ag by the electrode prepared in current density -1lower test constant current charge and discharge performance, can find that the specific capacity of electrode of the present invention is 130mAh/g, can be used as lithium electricity electrode material and uses.In addition, electrode has good cyclical stability, and after 200 circulations, capacitance loss is only 2.5%(current density is 1Ag -1).
Embodiment 3:
The bagasse water collected is cleaned post-drying, preparation lithium nitrate (LiNO 3) and manganese nitrate (Mn (NO 3) 24H 2o) mixed solution, is dissolved in the lithium nitrate of 5 kilograms and the mixture of manganese nitrate in 95 kilograms of deionized waters, and keeps lithium nitrate and manganese nitrate mol ratio to be 1:2.Then the bagasse of 23 kilograms is immersed in 80 kilograms of preparation lithium nitrates and manganese nitrate mixed solution, after bagasse soaks into completely, bagasse is taken out, dry under being placed in 63 DEG C of environment.Then the bagasse being adsorbed with lithium nitrate and manganese nitrate 700 DEG C of calcinings 4 hours in air atmosphere, finally by washing and dry and obtain porous LiMn2O4 nanometer sheet.
Detect: it is lithium manganate having spinel structure that XRD characterizes this product of display, spread out peak and the LiMn of sample 2o 4(JCPDS card number: 35-0782) standard card coincide better.Can learn that the pattern of LiMn2O4 is sheet from the ESEM photograph of product, ESEM photograph can find out that gained nanometer sheet thickness is about 30-40 nanometer, from the porosity characteristic can finding out gained nanometer sheet shown in ESEM photograph and transmission electron microscope picture.
The sheet LiMn2O4 powder prepared is prepared into electrode, at 0.5MLi 2sO 4in, potential region is that 0-1 volt carries out cyclic voltammetric performance test, can find that electrode has good electrochemical properties.Be 0.5Ag by the electrode prepared in current density -1lower test constant current charge and discharge performance, can find that the specific capacity of electrode of the present invention is 118mAh/g, can be used as lithium electricity electrode material and uses.In addition, electrode has good cyclical stability, and after 200 circulations, capacitance loss is only 2.8%(current density is 1Ag -1).
Embodiment 4:
The bagasse water collected is cleaned post-drying, preparation lithium nitrate (LiNO 3) and manganese nitrate (Mn (NO 3) 24H 2o) mixed solution, is dissolved in the lithium nitrate of 7 kilograms and the mixture of manganese nitrate in 93 kilograms of deionized waters, and keeps lithium nitrate and manganese nitrate mol ratio to be 1:2.Then the bagasse of 17 kilograms is immersed in 83 kilograms of preparation lithium nitrates and manganese nitrate mixed solution, after bagasse soaks into completely, bagasse is taken out, dry under being placed in 55 DEG C of environment.Then the bagasse being adsorbed with lithium nitrate and manganese nitrate 800 DEG C of calcinings 5 hours in air atmosphere, finally by washing and dry and obtain porous LiMn2O4 nanometer sheet.
Detect: it is lithium manganate having spinel structure that XRD characterizes this product of display, spread out peak and the LiMn of sample 2o 4(JCPDS card number: 35-0782) standard card coincide better.Can learn that the pattern of LiMn2O4 is sheet from the ESEM photograph of product, ESEM photograph can find out that gained nanometer sheet thickness is about 40-50 nanometer, from the porosity characteristic can finding out gained nanometer sheet shown in ESEM photograph and transmission electron microscope picture.
The sheet LiMn2O4 powder prepared is prepared into electrode, at 0.5MLi 2sO 4in, potential region is that 0-1 volt carries out cyclic voltammetric performance test, can find that electrode has good electrochemical properties.Be 0.5Ag by the electrode prepared in current density -1lower test constant current charge and discharge performance, can find that the specific capacity of electrode of the present invention is 112mAh/g, can be used as lithium electricity electrode material and uses.In addition, electrode has good cyclical stability, and after 200 circulations, capacitance loss is only 3%(current density is 1Ag -1).
Embodiment 5:
The bagasse water collected is cleaned post-drying, preparation lithium nitrate (LiNO 3) and manganese nitrate (Mn (NO 3) 24H 2o) mixed solution, is dissolved in the lithium nitrate of 25 kilograms and the mixture of manganese nitrate in 75 kilograms of deionized waters, and keeps lithium nitrate and manganese nitrate mol ratio to be 1:2.Then the bagasse of 15 kilograms is immersed in 85 kilograms of preparation lithium nitrates and manganese nitrate mixed solution, after bagasse soaks into completely, bagasse is taken out, dry under being placed in 58 DEG C of environment.Then the bagasse being adsorbed with lithium nitrate and manganese nitrate 600 DEG C of calcinings 3 hours in air atmosphere, finally by washing and dry and obtain porous LiMn2O4 nanometer sheet.
Detect: it is lithium manganate having spinel structure that XRD characterizes this product of display, spread out peak and the LiMn of sample 2o 4(JCPDS card number: 35-0782) standard card coincide better.Can learn that the pattern of LiMn2O4 is sheet from the ESEM photograph of product, ESEM photograph can find out that gained nanometer sheet thickness is about 20-40 nanometer, from the porosity characteristic can finding out gained nanometer sheet shown in ESEM photograph and transmission electron microscope picture.
The sheet LiMn2O4 powder prepared is prepared into electrode, at 0.5MLi 2sO 4in, potential region is that 0-1 volt carries out cyclic voltammetric performance test, can find that electrode has good electrochemical properties.Be 0.5Ag by the electrode prepared in current density -1lower test constant current charge and discharge performance, can find that the specific capacity of electrode of the present invention is 110mAh/g, can be used as lithium electricity electrode material and uses.In addition, electrode has good cyclical stability, and after 200 circulations, capacitance loss is only 2.7%(current density is 1Ag -1).
Above-described embodiment, just one of more preferably concrete mode of the present invention, the usual change that those skilled in the art carry out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.

Claims (7)

1. a porous LiMn2O4 nanometer sheet, it is characterized in that: described porous LiMn2O4 nanometer sheet is porous two dimension LiMn2O4 nanometer sheet, LiMn2O4 nanometer sheet thickness is 20-50 nanometer, and raw material components and weight portion are: bagasse 15-25 part, mixed aqueous solution 75-85 part of manganese nitrate and lithium nitrate.
2. a kind of porous LiMn2O4 nanometer sheet according to claim 1, is characterized in that: described porous LiMn2O4 nanometer sheet is prepared from by following raw material components and weight portion: bagasse 20 parts, the mixed aqueous solution of manganese nitrate and lithium nitrate 80 parts.
3. the preparation method of a kind of porous LiMn2O4 nanometer sheet according to claim 1, is characterized in that: concrete steps:
(1) bagasse process: by the bagasse washed with de-ionized water post-drying gathered, the bagasse that oven dry obtains is for subsequent use;
(2) prepare mixed liquor: the manganese nitrate and lithium nitrate that necessarily mix mol ratio are mixed with mixed solution by a certain amount of and a certain amount of deionized water, obtained lithium nitrate and manganese nitrate mixed solution for subsequent use;
(3) adsorb: the bagasse of step (1) is immersed in the mixed liquor of step (2), after bagasse soaks into completely, bagasse is taken out, and dry under being placed in uniform temperature;
(4) calcine: a period of time calcined by the bagasse after step (3) being dried;
(5) clean: the products in water cleaning after step (4) is calcined, and dry at a certain temperature, obtain porous LiMn2O4 nanometer sheet.
4. the preparation method of a kind of porous LiMn2O4 nanometer sheet according to claim 3, is characterized in that: the manganese nitrate described in step (2) and the mixed aqueous solution of lithium nitrate are prepared into by the deionized water of the manganese nitrate of 5-15 weight portion and lithium nitrate mixture and 85-95 weight portion; The mixing mol ratio of described manganese nitrate and lithium nitrate mixture is 2:1.
5. the preparation method of a kind of porous LiMn2O4 nanometer sheet according to claim 3, is characterized in that: the oven dry control temperature described in step (3) is 55-65 DEG C.
6. the preparation method of a kind of porous LiMn2O4 nanometer sheet according to claim 3, is characterized in that: the temperature that the calcining described in step (4) controls is 600-800 DEG C, and the time is 2-5 hour.
7. the preparation method of a kind of porous LiMn2O4 nanometer sheet according to claim 3, is characterized in that: the drying control temperature described in step (5) is 100-120 DEG C.
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CN106830090B (en) * 2017-03-27 2018-04-24 洛阳理工学院 LiMn with porous laminated structure2O4The preparation method of positive electrode
CN110729476B (en) * 2019-10-22 2021-08-17 中国科学院宁波材料技术与工程研究所 Pseudo-capacitance composite high-capacity lithium manganate positive electrode material and preparation method thereof, and lithium ion battery

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CN102107862A (en) * 2011-01-20 2011-06-29 铜陵金泰电池材料有限公司 Method for preparing lithium iron phosphate by using wood fibers as carbon source
CN102328953A (en) * 2011-07-28 2012-01-25 华南农业大学 Preparation method of lithium titanate with special morphology

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN102107862A (en) * 2011-01-20 2011-06-29 铜陵金泰电池材料有限公司 Method for preparing lithium iron phosphate by using wood fibers as carbon source
CN102328953A (en) * 2011-07-28 2012-01-25 华南农业大学 Preparation method of lithium titanate with special morphology

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