CN110518222A - The preparation method and lithium ion/sodium-ion battery cathode and its battery of a kind of ion battery cathode material - Google Patents

The preparation method and lithium ion/sodium-ion battery cathode and its battery of a kind of ion battery cathode material Download PDF

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Publication number
CN110518222A
CN110518222A CN201910838637.0A CN201910838637A CN110518222A CN 110518222 A CN110518222 A CN 110518222A CN 201910838637 A CN201910838637 A CN 201910838637A CN 110518222 A CN110518222 A CN 110518222A
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ion battery
preparation
ball milling
powder
battery cathode
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李文武
王彬
廖俊
余家乐
张海燕
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Guangdong University of Technology
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Guangdong University of 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
    • 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
    • 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
    • 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
    • H01M4/364—Composites as mixtures
    • 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
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • 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
    • H01M4/621—Binders
    • 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
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention belongs to the preparation method and lithium ion/sodium-ion battery cathode of electrochemistry and battery technology more particularly to a kind of ion battery cathode material and its batteries.The present invention provides a kind of preparation methods of ion battery cathode material, comprising the following steps: according to chemical general formula: SbBiSyTe3‑y, wherein y is molal quantity, and at least one of S powder or Te powder material and Sb powder and Bi powder are carried out ball milling mixing, obtain ion battery cathode material by the positive number of 0≤y≤3.It can be obtained through measuring, ion battery cathode material made from technical solution provided by the invention, capacitance is high；Meanwhile after multiple charge and discharge test, capacitance is not decreased obviously, stable structure.A kind of layered ion cell negative electrode material provided by the invention, preparation method and applications, solve in the prior art, lithium ion battery negative material is difficult to take into account the technological deficiency of high capacity and stable structure.

Description

A kind of preparation method and lithium ion/sodium-ion battery of ion battery cathode material Cathode and its battery
Technical field
The invention belongs to electrochemistry and battery technology more particularly to the preparation methods and lithium of a kind of ion battery cathode material Ion/sodium-ion battery cathode and its battery.
Background technique
Along with the development of electronic equipment, universal and electric car very fast development, along with lithium ion battery is compared with ni-mh Battery and nickel-cadmium cell have higher energy density, bigger power density, more cater to the demand in market；Therefore, in recent years It is numerous to study the exploitation and improvement for being all inclined to lithium ion battery.
The cell negative electrode material of earliest period is lithium metal, there are problems that poor circulation；Though the Zinc-lithium alloy material of improvement Lithium metal improves security performance, but since the variation of volume in cyclic process causes material to be destroyed, and decaying is serious；It is excellent Change performance, negative electrode material is studied always, the negative electrode material of Carbon materials solves safety problem, but first charge-discharge is imitated Rate is lower；Transition metal oxide MO stability is preferable, reduces with oxide particle, and chemical mobility of the surface is caused to increase.Have The Bi of layer structure2S3Nano material is advantageous in terms of energy storage, is higher than stone as its theoretical capacity of lithium ion battery negative material Ink still since volume is increased up to 70% or more in charge and discharge process for it, causes its layer structure to be more easily damaged, leads Cause capacity that will soon decay.Electric conductivity and cycle performance are improved by effectively controlling volume expansion with carbon coating, according to grinding Study carefully show it is compound after lithium ion battery head charge/discharge capacity increase, the service life has been improved.
Now, lithium ion battery is usually using graphite as negative electrode material, but graphite cathode material capacity is not high, only 372mAh/g becomes an important research side of lithium ion battery development accordingly, for the research and development of lithium ion battery negative material To.
Therefore, a kind of ion battery cathode material, preparation method and applications are developed, for solving in the prior art, The technological deficiency for lacking a kind of lithium ion battery negative material with mass property, becomes those skilled in the art urgently It solves the problems, such as.
Summary of the invention
In view of this, the present invention provides a kind of preparation methods of ion battery cathode material and lithium ion/sodium ion electricity The cathode and its battery in pond, for solving in the prior art, lithium ion battery negative material is difficult to take into account high capacity and structure Stable technological deficiency.
The present invention provides a kind of preparation methods of ion battery cathode material, comprising the following steps:
According to chemical general formula: SbBiSyTe3-y, wherein y be molal quantity, the positive number of 0≤y≤3, by S powder or Te powder at least A kind of material and Sb powder and Bi powder carry out ball milling mixing, obtain ion battery cathode material.
It is highly preferred that the chemical general formula: SbBiSyTe3-y, wherein y is molal quantity, the positive number of 0 < y < 3.
Preferably, the y is selected from 0,0.5,1,1.5 or 2.5.
It should be noted that the application can be direct using more simple ball milling when y is selected from 0,0.5,1,1.5 or 2.5 SbBiS is madeyTe3-yCompound.
Preferably, the Ball-milling Time is 2-20 hours.
It is further preferred that the Ball-milling Time is 5-20 hours.
Preferably, the step further include: mix the ion battery cathode material with binder and conductive constituent element.
Preferably, the conductive constituent element is selected from active carbon, natural graphite, graphene, graphite flake, carbon with conductive capability Aeroge, artificial graphite, carbon nanotube, carbon fiber, graphite oxide, carbon black, reduced graphene, acetylene black, RuO2、TiN、 TiC, one of polyaniline, polypyrrole and polythiophene or a variety of.
Preferably, the binder is in lithium substitutional crylic acid, Kynoar, butadiene-styrene rubber and polytetrafluoroethylene (PTFE) It is one or more.
Preferably, the feed ratio of the ion battery cathode material and the conductive constituent element, the binder is (7~9): (0~2): (0~2).
It is highly preferred that the feed ratio of the ion battery cathode material and the conductive constituent element, the binder is 7:2: 1。
Specifically, greatly improving the electron transport ability of electrode material, while also increasing by introducing conductive constituent element Specific surface area；Buffered to when I lithium is embedded in the Study of Volume Expansion of the electrode, so as to avoid cycle performance substantially under The phenomenon that drop.
Preferably, the ball milling specifically includes: after every ball milling 15-120min, stopping ball milling 10-30min, repeats the above step Suddenly, Ball-milling Time is 2-20 hours；The ratio of grinding media to material of the ball milling is (10-30): 1, the revolving speed of the ball milling is 100~1200r/ min。
It is highly preferred that the ball milling specifically includes: after every ball milling 15-30min, stop ball milling 10-15min, repeat more than Step, Ball-milling Time are 5-20 hours；The ratio of grinding media to material of the ball milling is 20:1, and the revolving speed of the ball milling is 1000~1200r/ min。
The present invention also provides a kind of cathode of lithium ion/sodium-ion battery, are prepared including the preparation method Ion battery cathode material is mixed to get.
The present invention also provides a kind of lithium ion/sodium-ion battery, the cathode including the lithium ion/sodium-ion battery.
In conclusion the application discovery uses Sb the present invention provides a kind of preparation method of ion battery cathode material In powder, Bi powder, S powder and Te powder after a variety of progress ball millings, SbBiS is obtainedyTe3-y, wherein y is molal quantity, the positive number of 0≤y≤3. The present invention also provides a kind of cathode of lithium ion/sodium-ion battery and a kind of lithium ion/sodium-ion battery.It can through measuring , ion battery cathode material made from technical solution provided by the invention, capacitance height；Meanwhile through multiple charge and discharge test Afterwards, capacitance is not decreased obviously, stable structure.A kind of preparation method of ion battery cathode material provided by the invention is born Pole and battery solve in the prior art, and lithium ion battery negative material is difficult to take into account the technology of high capacity and stable structure Defect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.
Fig. 1 is the SbBiSTe of the embodiment of the present invention 12X-ray diffractogram；
Fig. 2 is the SbBiS of the embodiment of the present invention 21.5Te1.5X-ray diffractogram；
Fig. 3 is the SbBiTe of the embodiment of the present invention 33X-ray diffractogram；
Fig. 4 is the SbBiS of the embodiment of the present invention 40.5Te2.5X-ray diffractogram；
Fig. 5 is the SbBiS of the embodiment of the present invention 52.5Te0.5X-ray diffractogram；
Fig. 6 is the SbBiSTe of the embodiment of the present invention 12Storage lithium charge and discharge volt-ampere curve figure；
Fig. 7 is the SbBiTe of the embodiment of the present invention 33Storage lithium charge and discharge volt-ampere curve figure；
Fig. 8 is the SbBiS of the embodiment of the present invention 40.5Te2.5Storage lithium charge and discharge volt-ampere curve figure；
Fig. 9 is the SbBiS of the embodiment of the present invention 52.5Te0.5Storage lithium charge and discharge volt-ampere curve figure.
Specific embodiment
The embodiment of the invention provides a kind of preparation methods of ion battery cathode material and lithium ion/sodium-ion battery Cathode and its battery lack a kind of lithium ion battery negative material with mass property in the prior art for solving Technological deficiency.
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.
In order to which the present invention is described in more detail, below with reference to embodiment to a kind of ion battery cathode material provided by the invention Material, preparation method and applications, are specifically described, wherein lithium substitutional crylic acid (LiPAA), Kynoar (PVDF), Polytetrafluoroethylene (PTFE) (PTFE), butadiene-styrene rubber (SBR).
Embodiment 1
The present embodiment is to prepare stoichiometric compound SbBiSTe2Specific embodiment.
Bismuth meal 1.0145g, 99.99% antimony powder 0.5912g, 99.99% sulphur powder by purity for 99.99% 0.1556g, 99.99% tellurium powder 1.2387g mixing after, be put into dry ball grinder, with the revolving speed of 1200r/min, ball material Than carrying out ball milling for 20:1, SbBiSTe is obtained2；Wherein, the method for ball milling are as follows: after every ball milling 30min, stop ball milling 15min, Circulation 16 times, samples, then ball milling 30min after being co-mulled and made into 8 hours, stops ball milling 15min, samples again after circulation 10 times, 5 hours.
SbBiSTe is detected through X-ray diffraction2, shown according to the image of Fig. 1, SbBiSTe2With simple substance Sb, Bi, S, Te peak value Comparison, SbBiSTe2Material preparation is purer.
Embodiment 2
The present embodiment is preparation SbBiSyTe3-y, the specific embodiment of y=1.5.
Bismuth meal 1.0994g, 99.99% antimony powder 0.6407g, 99.99% sulphur powder by purity for 99.99% 0.2530g, 99.99% tellurium powder 1.0069g mixing after, be put into dry ball grinder, with the revolving speed of 1200r/min, ball material Than carrying out ball milling for 20:1, SbBiS is obtained1.5Te1.5；Wherein, the method for ball milling are as follows: after every ball milling 30min, stop ball milling 15min is recycled 16 times, is sampled after being co-mulled and made into 8 hours, then ball milling 30min, stops ball milling 15min, after recycling 10 times, 5 hours again Sampling.
SbBiS is detected through X-ray diffraction1.5Te1.5, image according to fig. 2 shows, simple substance S in figure, simple substance Bi, simple substance Te, Simple substance Sb and SbBiS1.5Te1.5The comparison of peak value, can get material in elemental impurities almost without；SbBiS1.5Te1.5With mark Quasi- PDF card (number 17-0320) is corresponding, has absolutely proved the material for obtaining pure phase again.
Embodiment 3
The present embodiment is to prepare stoichiometric compound SbBiSyTe3-y, the specific embodiment of y=0.
Bismuth meal 0.8786g, 99.99% antimony powder 0.5120g, 99.99% sulphur powder by purity for 99.99% 0.0000g, 99.99% tellurium powder 1.6093g mixing after, be put into dry ball grinder, with the revolving speed of 1200r/min, ball material Than carrying out ball milling for 20:1, SbBiTe is obtained3；Wherein, the method for ball milling are as follows: after every ball milling 30min, stop ball milling 15min, follow It ring 16 times, is sampled after being co-mulled and made into 8 hours, then ball milling 30min, stops ball milling 15min, sampled again after circulation 10 times, 5 hours.
SbBiTe is detected through X-ray diffraction3, shown according to the image of Fig. 3, simple substance S, simple substance Bi, simple substance Sb and SbBiTe3 XRD peak value comparison, can get material in elemental impurities almost without；SbBiTe3With PDF card (the number 15- of standard 0863) corresponding, the material for obtaining pure phase has been absolutely proved again.
Embodiment 4
The present embodiment is to prepare nonstoichiometric compound SbBiSyTe3-y, the specific embodiment of y=0.5.
Bismuth meal 0.9416g, 99.99% antimony powder 0.5487g, 99.99% sulphur powder by purity for 99.99% 0.0722g, 99.99% tellurium powder 1.4373g mixing after, be put into dry ball grinder, with the revolving speed of 1200r/min, ball material Than carrying out ball milling for 20:1, SbBiS is obtained0.5Te2.5；Wherein, the method for ball milling are as follows: after every ball milling 30min, stop ball milling 15min is recycled 16 times, is sampled after being co-mulled and made into 8 hours, then ball milling 30min, stops ball milling 15min, after recycling 10 times, 5 hours again Sampling.
SbBiS is detected through X-ray diffraction0.5Te2.5, shown according to the image of Fig. 4, SbBiS0.5Te2.5Product purity is high, miscellaneous Matter is few.
Embodiment 5
The present embodiment is preparation SbBiSyTe3-y, the specific embodiment of y=2.5.
Bismuth meal 1.3206g, 99.99% antimony powder 0.7697g, 99.99% sulphur powder by purity for 99.99% 0.5065g, 99.99% tellurium powder 0.4032g mixing after, be put into dry ball grinder, with the revolving speed of 1200r/min, ball material Than carrying out ball milling for 20:1, SbBiS is obtained2.5Te0.5；Wherein, the method for ball milling are as follows: after every ball milling 30min, stop ball milling 15min is recycled 16 times, is sampled after being co-mulled and made into 8 hours, regrind 10 times, sample again after 5 hours.
SbBiS is detected through X-ray diffraction2.5Te0.5, shown according to the XRD diagram picture of Fig. 5, pass through simple substance and product curve Comparison, product SbBiS2.5Te0.5Finished product impurity is almost without preparation purity is high.
The preparation of electrode slice
(1) it is coated with: taking out sample, according to sample: acetylene black: adhesive=7:2:1 ratio weighs sample, acetylene respectively Black grinding sufficiently, is applied on copper foil and forms suitable uniform thickness, dry.
(2) it is sliced: selecting and be coated with most uniform part in copper foil and be sliced, cut diameter 10mm and its corresponding gasket, And weigh the weight of electrode slice.
The assembling of button battery
The assembling of button battery will carry out in the glove box of inert atmosphere, and respective material is placed in glove box, is pressed According to negative electrode casing-elastic slice-gasket-negative electrode tab-electrolyte-diaphragm-lithium piece-gasket-anode cover sequence assembled battery.
Embodiment 6
The present embodiment is the specific embodiment for measuring 1~5 current potential of negative electrode material made from Examples 1 to 5, capacity.
Charge-discharge test (GCD)
Charge and discharge are carried out to sample under certain current condition, image is observed in the image recording variation of current potential Changeement charge-discharge performance.Lithium ion is migrated in insertion active material by cathode and is caused under cell potential in discharge process Drop, the amount after stablizing is discharge capacity.Lithium ion is deviate from from active material in charging process, and current potential increases, corresponding to hold Amount is charging capacity.
Referring to Fig. 6, the SbBiSTe of embodiment 12In the case where current density is 100mA/g, the ratio of second of electric discharge Capacity reaches 514.9mAh/g, and the specific capacity of charging is 468.8mAh/g, then the ratio of the specific capacity of charge and discharge is 91.0%.
Referring to Fig. 7, the SbBiTe of embodiment 33Charging and discharging curve, secondary specific discharge capacity are 475.2mAh/g, Charge specific capacity is 473.1mAh/g, initial coulomb efficiency 99.56%；The specific discharge capacity of third time is 480.8mAh/ G, charge specific capacity 474.0mAh/g, coulombic efficiency 98.6%.Coulombic efficiency is big, and battery loss is small, the charging of the material Cycle performance is high.
Referring to Fig. 8, the SbBiS of testing example 40.5Te2.5Charging and discharging curve, secondary specific discharge capacity are 477.5mAh/g, charge specific capacity 474.8mAh/g, coulombic efficiency 99.43%；The specific discharge capacity of third time is 466.4mAh/g, charge specific capacity 461.6mAh/g, coulombic efficiency 98.97%.Coulombic efficiency is big, and battery loss is small, should The charging cycle performance of material is high.
Referring to Fig. 9, the SbBiS of embodiment 52.5Te0.5The specific capacity of charge and discharge is big than before, second of specific discharge capacity Reach 723.4mAh/g, charge specific capacity 696.5mAh/g, the specific capacity ratio of third time is 96.28%.
From foregoing invention content and specific embodiment, it can be concluded that, technical solution provided by the invention has following excellent Point:
1, the more traditional high-pressure synthesis of ball-milling method of the present invention or the vehement burnt together of high temperature are at technique is simpler.
2, the polynary full active cathode material of carbon composite layer shape of the invention shows excellent storage in lithium ion battery Capacity and cycle performance.
3, the present invention replaces original material using raw material more from a wealth of sources, has good volume application prospect.
In conclusion can be obtained the present invention provides a kind of preparation method of ion battery cathode material through measuring, this Product made from the technical solution provided is invented, capacitance is high；Meanwhile after multiple charge and discharge test, capacitance is simultaneously not apparent from Decline, stable structure.A kind of layered ion cell negative electrode material provided by the invention, preparation method and applications solve existing Have in technology, lithium ion battery negative material is difficult to take into account the technological deficiency of high capacity and stable structure.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (10)

1. a kind of preparation method of ion battery cathode material, which comprises the following steps:
According to chemical general formula: SbBiSyTe3-y, wherein y is molal quantity, the positive number of 0≤y≤3, by least one of S powder or Te powder Material and Sb powder and Bi powder carry out ball milling mixing, obtain ion battery cathode material.
2. preparation method according to claim 1, which is characterized in that the y is selected from 0,0.5,1,1.5 or 2.5.
3. preparation method according to claim 1, which is characterized in that the Ball-milling Time is 2-20 hours.
4. preparation method according to claim 1, which is characterized in that the step further include: bear the ion battery Pole material is mixed with binder and conductive constituent element.
5. the preparation method according to claim 4, which is characterized in that the conduction constituent element is selected from the work with conductive capability Property charcoal, natural graphite, graphene, graphite flake, carbon aerogels, artificial graphite, carbon nanotube, carbon fiber, graphite oxide, charcoal Black, reduced graphene, acetylene black, RuO2, TiN, TiC, one of polyaniline, polypyrrole and polythiophene or a variety of.
6. the preparation method according to claim 4, which is characterized in that the binder is selected from lithium substitutional crylic acid, gathers partially One of vinyl fluoride, butadiene-styrene rubber and polytetrafluoroethylene (PTFE) are a variety of.
7. the preparation method according to claim 4, which is characterized in that in terms of mass parts, the ion battery cathode material Feed ratio with the conductive constituent element, the binder is (7~9): (0~2): (0~2).
8. preparation method according to claim 3, which is characterized in that the ball milling specifically includes: every ball milling 15-120min Afterwards, stop ball milling 10-30min, repeat above step, Ball-milling Time is 2-20 hours；The ratio of grinding media to material of the ball milling is (10- 30): 1, the revolving speed of the ball milling is 100~1200r/min.
9. a kind of cathode of lithium ion/sodium-ion battery, which is characterized in that including system as claimed in any one of claims 1 to 8 The ion battery cathode material that Preparation Method is prepared is mixed to get.
10. a kind of lithium ion/sodium-ion battery, which is characterized in that including lithium ion as claimed in claim 9/sodium ion electricity The cathode in pond.
CN201910838637.0A 2019-09-05 2019-09-05 The preparation method and lithium ion/sodium-ion battery cathode and its battery of a kind of ion battery cathode material Pending CN110518222A (en)

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Publication number Priority date Publication date Assignee Title
CN113130908A (en) * 2021-04-20 2021-07-16 安徽大学 Bismuth antimony telluride/graphene potassium ion battery cathode material with high-stability structure and preparation method thereof
CN113130908B (en) * 2021-04-20 2022-12-02 安徽大学 Bismuth antimony telluride/graphene potassium ion battery cathode material with high-stability structure and preparation method thereof

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Application publication date: 20191129