CN104124432A - Positive electrode material of Mg<0.5+y>(Co<0.5y>V<0.5y>Ti<1-y>)2(PO4)3 magnesium cell and preparation method thereof - Google Patents

Positive electrode material of Mg<0.5+y>(Co<0.5y>V<0.5y>Ti<1-y>)2(PO4)3 magnesium cell and preparation method thereof Download PDF

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CN104124432A
CN104124432A CN201410334251.3A CN201410334251A CN104124432A CN 104124432 A CN104124432 A CN 104124432A CN 201410334251 A CN201410334251 A CN 201410334251A CN 104124432 A CN104124432 A CN 104124432A
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anode material
magnesium cell
cell anode
dissolved
light yellow
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CN104124432B (en
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李法强
王敏
贾国凤
彭正军
祝增虎
诸葛芹
时历杰
赵有璟
李锦丽
龚龑
王青磊
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Qinghai Institute of Salt Lakes Research of CAS
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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
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • 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
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • 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
    • H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • 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 discloses a positive electrode material of a Mg<0.5+y>(Co<0.5y>V<0.5y>Ti<1-y>)2(PO4)3 magnesium cell. The positive electrode material is prepared by the following steps: (1) weighing Mg(OH)2, H3PO4, cobalt nitrate, and NH4VO3 according to the mole ratio of Mg:Co:V:Ti:PO4<3-> in the molecular formula Mg<0.5+y>(Co<0.5y>V<0.5y>Ti<1-y>)2(PO4)3, dissolving Mg(OH)2 and H3PO4 into deionized water, dissolving cobalt nitrate into critic acid, dissolving NH4VO3 into hot water, weighing Ti(C4H9O)4, dissolving Ti(CH4H9O)4 into absolute ethanol according to a ratio of 1:4 of absolute ethanol to Ti(C4H9O)4; (2) mixing all solutions prepared in the step (1), fiercely stirring for 4 to 8 hours at a temperature of 70 to 80 DEG C to dehydrate so as to obtain yellow gel, drying the yellow gel at a temperature of 80 to 100 DEG C so as to obtain light-yellow xerogel; (3) grinding the light-yellow xerogel, placing the powder into an atmosphere tube furnace, introducing N2-H2 mixed gas into the atmosphere tube furnace, pre-burning for 3 to 5 hours at a temperature of 300 to 500 DEG C, and finally burning for 20 to 26 hours at a temperature of 700 DEG C so as to obtain the black powder, namely the positive electrode material of a Mg<0.5+y>(Co<0.5y>V<0.5y>Ti<1-y>)2(PO4)3 magnesium cell, wherein the y is in a range of 0.1 to 0.5. The prepared positive material has a large discharge capacity and capacity retention ratio.

Description

A kind of Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material and preparation method thereof
Technical field
The present invention relates to the preparation field of secondary cell, particularly, the present invention relates to a kind of Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material and preparation method thereof.
Background technology
In recent years, along with the development of consumer electronics, electric tool and electric motor car, market constantly increases the demand of battery.In current existing battery system, zinc-manganese dioxide dry cell mercury pollution is outstanding, capacity is not high, be not suitable for long-time heavy-current discharge, and the price of zinc is higher.In plumbic acid and cobalt vanadium cadmium cell, contain harmful elements Pb and Cd, environment is had to potential danger.Obtain great progress taking lithium ion battery as the battery exploitation of main representative, and be widely applied to every field.But because Li is active especially, lithium ion battery is easy at negative pole precipitating metal Li while being used for high current charge-discharge, thereby cause potential safety hazard.This is just in the urgent need to exploitation and the application of cheapness, safety, environmental protection and heavy-duty battery.Under this background, Mg secondary cell, as one of possibility, has been subject to scientific research personnel's attention.Still in the Primary Study stage, there are many an open questions in magnesium cell now.Wherein the Electrochemical Properties synthetic and in magnesium cell system of novel anode material is one of important research direction wherein.
With respect to Li +, Mg 2+charge density large, solvation is even more serious, therefore great majority can all can not directly apply to Mg secondary cell for the positive electrode of lithium secondary battery.The general lithium that adopts is following several as having of the positive electrode of secondary cell: transient metal sulfide and organic sulfur compound, transition metal oxide, organic substance or have the phosphate Mg of NASICION structure 0.5ti 2(PO 4) 3(MTP), but above-mentioned positive electrode all has certain disadvantages, such as transient metal sulfide as positive electrode major defect is: prepare more difficultly, require under vacuum or argon gas atmosphere high temperature synthetic; Easily be corroded compared with oxide, its oxidation stability is undesirable.However, its good charge-discharge performance has become desirable insertion/deintercalation material.Oxide is as the positive electrode Shortcomings of Mg secondary cell: Mg 2+the kinetic rate embedding is very slow; Concerning most material, Mg in discharge process 2+embedding degree low; Most insert material cycle performances are bad, in circulation, can decompose very soon.Organic substance and traditional without machine battery MnO 2, HgO, CuO, Ag 2the capacity that O etc. have relatively had, has good cryogenic property, but along with the rising of temperature, battery capacity and cell voltage all can decline.For the phosphate Mg with NASICION structure 0.5ti 2(PO 4) 3(MTP), Mg 2+can be at Mg 0.5ti 2(PO 4) 3in reversible embedding/deintercalation, but their invertibitys are subject to Mg 2+the kinetic limitation of diffusion.
Summary of the invention
The object of the invention is to, a kind of Mg is provided 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material and preparation method thereof, this positive electrode has good discharge capacity and capability retention.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material, described positive electrode is prepared from by following methods:
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 4～8h at 70～80 DEG C, makes its dehydration generate yellow sol, at 80～100 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 3～5h at 300～500 DEG C, finally, at 700 DEG C of calcination 20～26h, obtains black powder and is Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material;
Wherein, y=0.1～0.5.
Preferably, described y=0.5.
Preferably, described step 3) in, after each solution mixes, vigorous stirring 6h at 75 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel.
Preferably, described step 4) in, passing into after gaseous mixture, pre-burning 4h at 300～500 DEG C, finally at 700 DEG C of calcination 24h.
The present invention also provides a kind of Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3the preparation method of magnesium cell anode material, described method comprises the steps:
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 4～8h at 70～80 DEG C, makes its dehydration generate yellow sol, at 80～100 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 3～5h at 300～500 DEG C, finally, at 700 DEG C of calcination 20～26h, obtains black powder and is Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material;
Wherein, y=0.1～0.5.
Preferably, described y=0.5.
Preferably, described step 3) in, after each solution mixes, vigorous stirring 6h at 75 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel.
Preferably, described step 4) in, passing into after gaseous mixture, pre-burning 4h at 300～500 DEG C, finally at 700 DEG C of calcination 24h.
Magnesium cell anode material prepared by the present invention first discharge capacity can reach 191mAh/g, and capability retention is more than 90%, and high energy reaches 95.3%.
Brief description of the drawings
Fig. 1 is the XRD figure that difference is mixed sample under cobalt vanadium amount;
Embodiment
With embodiment, the present invention is further detailed explanation below.
Embodiment 1
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 8h at 70 DEG C, makes its dehydration generate yellow sol, at 100 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 5h at 500 DEG C, finally, at 700 DEG C of calcination 26h, obtains black powder and is Mg 0.6(Co 0.05v 0.05ti 0.9) 2(PO 4) 3magnesium cell anode material.
Embodiment 2
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 4h at 80 DEG C, makes its dehydration generate yellow sol, at 80 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 5h at 300 DEG C, finally, at 700 DEG C of calcination 20h, obtains black powder and is Mg 0.7(Co 0.1v 0.1ti 0.8) 2(PO 4) 3magnesium cell anode material.
Embodiment 3
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 6h at 75 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 4h at 400 DEG C, finally, at 700 DEG C of calcination 24h, obtains black powder and is Mg 0.8(Co 0.15v 0.15ti 0.7) 2(PO 4) 3magnesium cell anode material.
Embodiment 4
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 5h at 78 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 4h at 400 DEG C, finally, at 700 DEG C of calcination 24h, obtains black powder and is Mg 0.9(Co 0.2v 0.2ti 0.6) 2(PO 4) 3magnesium cell anode material.
Embodiment 5
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 6h at 75 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 4h at 400 DEG C, finally at 700 DEG C of calcination 24h, obtains black powder and is Mg (Co 0.25v 0.25ti 0.5) 2(PO 4) 3magnesium cell anode material.
Comparative example 1
Prepare Mg according to the method identical with the application 0.5ti 2(PO 4) 3, carry out electric performance test.
Comparative example 2
Prepare Mg according to the method identical with the application 0.5v 2(PO 4) 3, carry out electric performance test.
Comparative example 3
Prepare Mg according to the method identical with the application 0.5co 2(PO 4) 3, carry out electric performance test.
Comparative example 4
Prepare Mg according to the method identical with the application 0.5(V 0.5ti 0.5) 2(PO 4) 3, carry out electric performance test.
Comparative example 5
Prepare Mg according to the method identical with the application 0.5(Co 0.5ti 0.5) 2(PO 4) 3, carry out electric performance test.
Comparative example 6
Prepare Mg according to the method identical with the application 0.5(V 0.5co 0.5) 2(PO 4) 3, carry out electric performance test.
The sign of sample
Analyze the thing phase of synthetic material with the automatic X-ray diffractometer of X ' Pert PRO type (Holland produces), Cu target (λ=0.154056nm), pipe is pressed 20kV, pipe stream 40mA.XRD data are carried out to analyzing and processing with MDI Jade5.0 and Origin8.0.Sample prepared by embodiment 1-5, y=0.6 prepared by the employing method identical with embodiment 3 or 0.7 or 0.8 magnesium cell anode material have carried out XRD test, and result as shown in Figure 1.In Fig. 1, be respectively y=0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8 X-ray diffraction spectrum.As can be seen from the figure, y=0.1～0.5 o'clock, Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3the XRD diffraction pattern of magnesium cell anode material and the main peaks of base peak are substantially identical, in the time of y=0.6～0.8, and Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3the XRD diffraction pattern of magnesium cell anode material has other impurity peaks; By analysis, impurity component be can not determine.Therefore, doping y is in 0.1～0.5 scope time, Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material crystalline structure does not change, and in the time of y>0.5, occurs not clear impurity peaks, and crystalline structure is influenced.
Electric performance test
The sample that embodiment 1-5 is made with comparative example 1-6 mixes and puts into agate mortar grinding evenly and add appropriate organic solvent NMP (1-METHYLPYRROLIDONE) by the mass ratio of 75:15:10 with acetylene black and polyvinylidene fluoride (PVDF), grind to form after even pastel, evenly be coated on anodal disk, at 95 DEG C, vacuumize 4h obtains positive plate.In the glove box that is full of high-purity argon, taking metal magnesium sheet as negative pole, microporous polypropylene membrane Celgard2400 is barrier film, with 0.25mol/L Mg (AlCl 2buEt) 2tHF solution be electrolyte, be assembled into experimental cell, carry out charge and discharge cycles test, result is as shown in table 1.
The magnesium cell anode material electric performance test result that table 1 embodiment 1-5 and comparative example 1-6 make
The discharge capacity of as can be seen from the above table, mixing the magnesium cell anode material after cobalt vanadium increases along with mixing the increase of cobalt vanadium amount.Capability retention after 500 discharge cycles is more than 90%, and high energy reaches 95.3%.

Claims (8)

1. a Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material, described positive electrode is prepared from by following methods:
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 4～8h at 70～80 DEG C, makes its dehydration generate yellow sol, at 80～100 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 3～5h at 300～500 DEG C, finally, at 700 DEG C of calcination 20～26h, obtains black powder and is Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material;
Wherein, y=0.1～0.5.
2. Mg according to claim 1 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material, is characterized in that, described y=0.5.
3. Mg according to claim 1 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material, is characterized in that, described step 3) in, after each solution mixes, vigorous stirring 6h at 75 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel.
4. Mg according to claim 1 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material, is characterized in that, described step 4) in, passing into after gaseous mixture, pre-burning 4h at 300～500 DEG C, finally at 700 DEG C of calcination 24h.
5. a Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3the preparation method of magnesium cell anode material, described method comprises the steps:
1) press Mg:Co:V:Ti:PO in gained magnesium cell anode material molecular formula 4 3-mol ratio, take Mg (OH) 2and H 3pO 4, and cobalt nitrate and NH 4vO 3, by Mg (OH) 2and H 3pO 4be dissolved in deionized water, cobalt nitrate is dissolved in citric acid, NH 4vO 3be dissolved in hot water;
Take Ti (C 4h 9o) 4, and in the ratio of 1:4 with absolute ethyl alcohol by Ti (C 4h 9o) 4dissolve;
2) by step 1) the each solution mixing of gained, vigorous stirring 4～8h at 70～80 DEG C, makes its dehydration generate yellow sol, at 80～100 DEG C, is dried, and obtains light yellow xerogel;
3) light yellow xerogel is ground and is placed in atmosphere tube type stove and passes into N 2-H 2gaseous mixture, pre-burning 3～5h at 300～500 DEG C, finally, at 700 DEG C of calcination 20～26h, obtains black powder and is Mg 0.5+y(Co 0.5yv 0.5yti 1-y) 2(PO 4) 3magnesium cell anode material;
Wherein, y=0.1～0.5.
6. method according to claim 5, is characterized in that, described y=0.5.
7. method according to claim 5, is characterized in that, described step 3) in, after each solution mixes, vigorous stirring 6h at 75 DEG C, makes its dehydration generate yellow sol, at 90 DEG C, is dried, and obtains light yellow xerogel.
8. method according to claim 5, is characterized in that, described step 4) in, passing into after gaseous mixture, pre-burning 4h at 300～500 DEG C, finally at 700 DEG C of calcination 24h.
CN201410334251.3A 2014-07-14 2014-07-14 A kind of Mg0.5+y(Co0.5yv0.5yti1-y)2(PO4)3magnesium cell anode material and preparation method thereof Expired - Fee Related CN104124432B (en)

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WO2024021822A1 (en) * 2022-07-27 2024-02-01 宜宾南木纳米科技有限公司 Magnesium-based solid electrolyte, preparation method therefor, and battery

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