CN108269978A - Quantum dot/carbon pipe carries sulphur composite positive pole and preparation method and application - Google Patents

Quantum dot/carbon pipe carries sulphur composite positive pole and preparation method and application Download PDF

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CN108269978A
CN108269978A CN201711446664.0A CN201711446664A CN108269978A CN 108269978 A CN108269978 A CN 108269978A CN 201711446664 A CN201711446664 A CN 201711446664A CN 108269978 A CN108269978 A CN 108269978A
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carbon pipe
positive pole
sulphur
preparation
quantum dot
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CN108269978B (en
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聂华贵
禅丹
郭泽青
杨植
阮春平
赖玉崇
丁欣慰
黄少铭
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Wenzhou University
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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
    • 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
    • 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
    • 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
    • H01M4/625—Carbon or graphite
    • 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
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • 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 present invention provides quantum dot/carbon pipes to carry sulphur composite positive pole and preparation method and application, and technical solution is including preparation method：By carbon pipe and sulphur simple substance mixed grinding, CS is added in2It is dried after being sufficiently stirred and carbon pipe load sulphur composite material is made；It with carbon black, Kynoar by certain mass ratio is mixed, then adds in N methyl pyrrolidones and selenium（Or sulphur）Compound quantum dot stirring and ultrasonic disperse is uniform, control viscosity obtains slurry in 1000 ~ 10000cps, and gained slurry is coated in the thickness of 150 ~ 400mm in current collector aluminum foil, then dries, obtains selenium（Or sulphur）Compound quantum dot carries sulphur composite positive pole with carbon pipe；Selenium provided by the invention（Or sulphur）The preparation method of compound quantum dot carbon pipe composite positive pole, it is easy to operate, it is easy to mass produce；Composite positive pole obtained is used in lithium-sulfur cell, can solve dissolving of more sulphions in liquid electrolyte in lithium-sulfur cell charge and discharge process, effectively inhibits shuttle effect, improves the coulombic efficiency and cyclical stability of lithium-sulfur cell.

Description

Quantum dot/carbon pipe carries sulphur composite positive pole and preparation method and application
Technical field
The invention belongs to nanocomposite research fields, more particularly to a kind of to improve its electrochemistry for lithium-sulfur cell It can and inhibit the selenium of polysulfide shuttle effect etc.（Or sulphur）The preparation side of compound quantum dot/carbon pipe composite positive pole Method.
Background technology
With growing day by day, the increasingly exhausted and burning of fossil fuel reserves of rapid economic development and energy-output ratio Caused by environmental pollution so that demand of the people to novel alternative energy source is more and more urgent.New energy, particularly chemical energy source have Have clean environment firendly and it is safe and efficient the features such as, meet the requirement of human kind sustainable development strategy and gain great popularity.Energy storage, which is used as, is permitted The key of more innovative technologies, battery technology achieve huge advance, various mechanism under the promotion of the emerging concept such as electric vehicle Battery developed, but lithium-sulfur cell is most potential in next-generation energy storage technology.Because lithium ion battery is certainly Since commercialization in 1991, by the development of more than 20 years, the performance of the positive and negative pole material of conventional lithium ion battery was close to it Theoretical limit, but it is still unsatisfactory in face of increasingly huger energy-storage system.And lithium-sulfur cell has many advantages, its reason It is 1675 mAhg by specific capacity-1, it is 10 times of conventional lithium ion battery, and the rich reserves of sulphur, cheap, low toxicity It is nuisanceless.It is imitated however, more lithium sulfides that lithium-sulfur cell is formed in charge and discharge process are soluble in liquid electrolyte to cause to shuttle Should and the volume expansion in charge and discharge process and the problems such as corrosion of lithium metal cause lithium-sulfur cell active material utilization It is low, coulombic efficiency is low, poor circulation, become obstruction of the lithium-sulfur cell during business application.
In order to solve these problems, its large-scale use is realized, it is necessary to research and development simplicity and low-cost preparation Method improves the chemical property of lithium-sulfur cell, so as to promoting the actual application prospect of lithium-sulfur cell.
Invention content
Technical problem to be solved of the embodiment of the present invention is, provides a kind of quantum dot/carbon pipe composite positive pole Preparation method, this method is easy to operate, mild condition, is easy to mass produce.
Second object of the present invention is to provide a kind of quantum dot/carbon pipe composite positive pole.
Third object of the present invention is to provide a kind of quantum dot/carbon pipe composite positive pole answering in lithium-sulfur cell With, dissolving of more sulphions in liquid electrolyte in lithium-sulfur cell charge and discharge process can be solved, effectively inhibits shuttle effect, Improve the coulombic efficiency and cyclical stability of lithium-sulfur cell.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of quantum dot/carbon pipe carries the preparation method of sulphur composite positive pole, includes the following steps：
（1）Carbon pipe carries the preparation of sulphur composite material：
Carbon pipe and elemental sulfur are pressed 1:1-2 is mixed, and 3-6mLCS is added in after grinding uniformly2It stirs, is subsequently placed at room temperature in feed liquid To CS2After volatilization completely, surplus materials keeps the temperature 8 ~ 12h in 120 ~ 160 DEG C of baking ovens, is cooled to room temperature is carried to get carbon pipe later Sulphur composite material；
（2）Quantum dot/carbon pipe carries the preparation of sulphur composite positive pole：
By step（1）Gained carbon pipe carries sulphur composite material and presses 3-8 with conductive additive, binding agent:1:1 mixing, then adds in 2- Simultaneously ultrasonic disperse is uniform for 5mL N-Methyl pyrrolidones and selenium or sulfide quantum dots reagent 1-20mg stirrings, selenium or vulcanization The mass ratio that the additive amount of object quantum dot reagent carries sulphur composite material with carbon pipe is 1:20-200, control viscosity 1000 ~ 10000cps obtains slurry, and gained slurry scraper is coated in current collector aluminum foil, aluminium foil then is transferred to 40 ~ 60 DEG C Drying in oven carries sulphur composite positive pole to get selenium or sulfide quantum dots with carbon pipe.
Be further arranged to, the thickness of the current collector aluminum foil is 30um, before use with N-Methyl pyrrolidone and Alcohol washes, to remove surface oxide layer and impurity, natural air drying.
It is further arranged to, the conductive additive is carbon black, and binding agent is Kynoar.
It is further arranged to, step（2）In, the selenium or sulfide quantum dots reagent are to have absorption to polysulfide The reagent of ability.
Realize second object of the present invention and third purpose, the present invention provides based on the quantum prepared by the above method Point/carbon pipe carries sulphur composite positive pole, at the same the present invention also provides using the quantum dot/carbon pipe carry sulphur composite positive pole as The application of the anode electrode of lithium-sulfur cell.
The beneficial effects of the present invention are：
（1）Using selenium（Or sulphur）Compound quantum dot is stronger as the adsorbent adsorption capacity of polysulfide；
（2）The selenium of preparation（Or sulphur）Compound quantum dot carries sulphur composite positive pole with carbon pipe, can be additionally provided electrons/ions biography Approach is led, reduces the internal resistance of cell, greatly enhances the discharge capacity and stable circulation performance of battery；
（3）Containing selenium（Or sulphur）The composite positive pole of compound quantum dot can enhance accelerates chemistry with the reactivity of polysulfide Kinetics so as to inhibit shuttle effect, improves lithium-sulfur cell performance；
（4）Carrier porous carbon provides storage sulphur space, and can limit polysulfide, lithium sulfide diffusion and transport；
In summary, on the one hand, the present invention provides selenium（Or sulphur）Compound quantum dot carbon pipe carries the preparation of sulphur composite positive pole Method, it is easy to operate, it is not related to high temperature and pressure, can be completed at room temperature, is easy to mass produce；On the other hand, by made from The composite positive pole is used in lithium-sulfur cell, can solve in lithium-sulfur cell charge and discharge process more sulphions in liquid electrolyte In dissolving, effectively inhibit shuttle effect, improve the coulombic efficiency and cyclical stability of lithium-sulfur cell.
Description of the drawings
Selenide quantum dots made from Fig. 1 embodiment of the present invention 1 carry sulphur composite positive pole with carbon pipe and are used for lithium-sulfur cell With charge and discharge platform comparison diagram of the lithium-sulfur cell without selenide quantum dots material under 0.2C；
Different proportion selenide quantum dots made from Fig. 2 embodiment of the present invention 1 carry sulphur composite positive pole with carbon pipe and are used for lithium sulphur The high rate performance comparison diagram of battery and the lithium-sulfur cell without selenide quantum dots material；
When sulfide quantum dots made from Fig. 3 embodiment of the present invention 2 and carbon pipe graphite composite positive pole are for lithium-sulfur cell High areal density cycle performance figure.
Specific embodiment
The present invention is further detailed below by specific embodiment, but protection scope of the present invention and is not only limited In this.
Embodiment 1
Selenide quantum dots carry the preparation of sulphur composite positive pole with carbon pipe and are applied in lithium-sulfur cell
（1）Carbon pipe carries the preparation of sulphur composite material：The carbon pipe of 200mg is taken, in mortar, porous carbon and sulphur to be filled with 200mg elemental sulfurs Divide grinding uniform, gained mixture is transferred in 25ml measuring cups, and add in 3.2mL CS2It is sufficiently stirred, treats CS2It is evaporated completely Entirely, mixture is transferred to 120 DEG C of baking oven heat preservation 12h, be cooled to room temperature later, it is compound up to carbon pipe load sulphur to collect products therefrom Material；
（2）Selenide quantum dots carbon pipe carries the preparation of sulphur composite positive pole：Carbon pipe load sulphur composite material 300mg is added with conduction Add agent carbon black 15mg, the mixing of bonding agent Kynoar 15mg, 1mg selenide quantum dots, then add in 2.5mL NMP and ultrasound Disperse, be sufficiently stirred, control the viscosity of slurry in 10000cps, collector is then coated in the thickness of 150mm scraper On aluminium foil（Aluminium foil twice of NMP and alcohol washes, to remove surface oxide layer and impurity, natural air drying, aluminum foil thickness is 30um）.Then aluminium foil is transferred in 40 DEG C of baking ovens, dried to get to required positive electrode；
（3）The assembling of battery：By step（2）Combination electrode material obtained is cut into the circular piece of a diameter of 14mm, dry It weighs under environment, and deducts blank aluminium flake quality, anode pole piece is made, for use.As control experiment, without selenide quantum dots Carbon pipe carry sulphur composite positive pole be also made in the same way control anode pole piece it is for use；Contain full of argon gas, water and oxygen Amount is respectively less than the assembling that battery is carried out in the glove box of lppm.Using commercial metals lithium piece as reference electrode and to electrode, use LiTFSI/DOL.DMC（1：1）And dissolved with 1%LiNO3Liquid electrolyte, diaphragm use Celgard2400, be assembled into CR2025 After button cell, stand for 24 hours, then carry out charge-discharge test；
（4）New prestige battery test system carries out battery charging and discharging test under different multiplying, and test condition is room temperature environment, window Starting voltage is 1.5V, final voltage 3.0V；
Fig. 1 is that selenide quantum dots carbon pipe made from the present embodiment carries sulphur composite positive pole for lithium-sulfur cell with not adding Charge and discharge platform comparison diagram of the lithium-sulfur cell of selenide quantum dots under 0.2C, it can be seen from the figure that with selenizing object amount The carbon pipe of son point carries the lithium-sulfur cell capacity of sulphur composite material and acquisition rate is substantially better than the lithium for not adding selenide quantum dots Two kinds of batteries of sulphur.
Fig. 2 is that selenide quantum dots carbon pipe carries sulphur composite positive pole for lithium-sulfur cell with being free of selenide quantum dots Lithium-sulfur cell high rate performance comparison diagram, from the graph, it is apparent that the lithium sulphur electricity of the positive electrode containing selenide quantum dots Pond is owned by higher discharge capacity under each multiplying power.
Embodiment 2
Sulfide quantum dots carry the preparation of sulphur composite positive pole with carbon pipe and are applied in lithium-sulfur cell
（1）Carbon pipe carries the preparation of sulphur composite material：The carbon pipe composite material of the above-mentioned gained of 200mg and 400mg elemental sulfurs are taken in grinding Porous carbon and sulphur are fully ground uniformly, gained mixture are transferred in 25ml measuring cups, and add in 6mL CS by alms bowl2Fully Stirring, treats CS2Volatilization is complete, and mixture is transferred to 150 DEG C of baking oven heat preservation 10h, is cooled to room temperature later, collects products therefrom Sulphur composite material is carried up to carbon pipe；
（2）Sulfide quantum dots carbon pipe carries the preparation of sulphur composite positive pole：Carbon pipe load sulphur composite material 400mg is added with conduction Add agent carbon black 50mg, the mixing of bonding agent Kynoar 50mg, 2mg sulfide quantum dots, then add in 3.5mL NMP and ultrasound Disperse, be sufficiently stirred, control the viscosity of slurry in 6000cps, collector aluminium is then coated in the thickness of 150mm scraper On foil（Aluminium foil twice of NMP and alcohol washes, to remove surface oxide layer and impurity, natural air drying, aluminum foil thickness 30um）. Then aluminium foil is transferred in 50 DEG C of baking ovens, dried to get to required positive electrode；
（3）The assembling of battery：By step（2）Combination electrode material obtained is cut into the circular piece of a diameter of 14mm, dry It weighs under environment, and deducts blank aluminium flake quality, anode pole piece is made, for use.As control experiment, without sulfide quantum dots Carbon pipe carry sulphur composite positive pole be also made in the same way control anode pole piece it is for use；Contain full of argon gas, water and oxygen Amount is respectively less than the assembling that battery is carried out in the glove box of lppm.Using commercial metals lithium piece as reference electrode and to electrode, use LiTFSI/DOL.DMC（1：1）And dissolved with 1%LiNO3Liquid electrolyte, diaphragm use Celgard2400, be assembled into CR2025 After button cell, stand for 24 hours, then carry out charge-discharge test；
（4）New prestige battery test system carries out battery charging and discharging test under different multiplying, and test condition is room temperature environment, window Starting voltage is 1.5V, final voltage 3.0V；
When Fig. 3 carries sulphur composite positive pole for lithium-sulfur cell for sulfide quantum dots carbon pipe, in 3.6mgcm-2High face it is close Under degree, with 1.97mAcm-2Current density carry out cyclical stability test, it can be seen that containing sulfide quantum dots Stability test and capacity are good.

Claims (6)

1. a kind of quantum dot/carbon pipe carries the preparation method of sulphur composite positive pole, which is characterized in that includes the following steps：
（1）Carbon pipe carries the preparation of sulphur composite material：
Carbon pipe and elemental sulfur are pressed 1:1-2 is mixed, and 3-6mLCS is added in after grinding uniformly2It stirs, is subsequently placed at room temperature in feed liquid To CS2After volatilization completely, surplus materials keeps the temperature 8 ~ 12h in 120 ~ 160 DEG C of baking ovens, is cooled to room temperature is carried to get carbon pipe later Sulphur composite material；
（2）Quantum dot/carbon pipe carries the preparation of sulphur composite positive pole：
By step（1）Gained carbon pipe carries sulphur composite material and presses 3-8 with conductive additive, binding agent:1:1 mixing, then adds in 2- Simultaneously ultrasonic disperse is uniform for 5mL N-Methyl pyrrolidones and selenium or sulfide quantum dots reagent 1-20mg stirrings, selenium or vulcanization The mass ratio that the additive amount of object quantum dot reagent carries sulphur composite material with carbon pipe is 1:20-200, control viscosity 1000 ~ 10000cps obtains slurry, and gained slurry scraper is coated in current collector aluminum foil, aluminium foil then is transferred to 40 ~ 60 DEG C Drying in oven carries sulphur composite positive pole to get selenium or sulfide quantum dots with carbon pipe.
2. preparation method as described in claim 1, which is characterized in that the thickness of the current collector aluminum foil is 30um, is made N-Methyl pyrrolidone and alcohol washes are used with preceding, to remove surface oxide layer and impurity, natural air drying.
3. preparation method as described in claim 1, which is characterized in that the conductive additive is carbon black, and binding agent is poly- Vinylidene.
4. preparation method as described in claim 1, which is characterized in that step（2）In, the selenium or sulfide quantum dots examination Agent is the reagent for having adsorption capacity to polysulfide.
5. a kind of quantum dot/carbon pipe prepared such as any one of claim 1-4 preparation methods carries sulphur composite positive pole.
6. a kind of quantum dot as claimed in claim 5/carbon pipe carries sulphur composite positive pole in lithium-sulfur cell as anode electricity The application of pole, which is characterized in that the quantum dot and carbon pipe are carried into sulphur composite positive pole and are processed into lithium-sulphur cell positive electrode electricity The specification shape and size of pole, as its anode electrode piece.
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CN109473640A (en) * 2018-09-30 2019-03-15 温州大学 Silicon substrate molecular sieve/carbon pipe carries sulphur composite positive pole and its preparation method and application
CN109494346A (en) * 2018-10-25 2019-03-19 电子科技大学 A kind of preparation method of carbon quantum dot modification lithium sulfur battery anode material
CN109698331A (en) * 2018-12-11 2019-04-30 温州大学 Lithium-sulfur cell sulfite salt/carbon pipe carries the preparation method of sulphur composite positive pole
CN109728297A (en) * 2018-12-11 2019-05-07 温州大学 Metal phthalocyanine/carbon pipe composite material preparation method and its application in lithium-sulphur cell positive electrode
CN109728267A (en) * 2018-12-11 2019-05-07 温州大学 The composite material and preparation method thereof of phosphorous Small Molecule Functionalization carbon nanotube and application
CN109755503A (en) * 2018-12-13 2019-05-14 温州大学 The preparation method and its application in lithium-sulfur cell that manganese sub-group compound/carbon pipe carries sulphur composite material
CN109755504A (en) * 2018-12-13 2019-05-14 温州大学 Application containing ferriporphyrin/carbon/carbon nano tube compound anode material preparation method and its in lithium-sulphur cell positive electrode
CN113410463A (en) * 2021-06-03 2021-09-17 江苏智泰新能源科技有限公司 Selenium metal compound-carbon material-sulfur composite cathode material, preparation method and application

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109473640A (en) * 2018-09-30 2019-03-15 温州大学 Silicon substrate molecular sieve/carbon pipe carries sulphur composite positive pole and its preparation method and application
CN109494346A (en) * 2018-10-25 2019-03-19 电子科技大学 A kind of preparation method of carbon quantum dot modification lithium sulfur battery anode material
CN109494346B (en) * 2018-10-25 2021-09-24 电子科技大学 Preparation method of carbon quantum dot modified lithium-sulfur battery positive electrode material
CN109728267B (en) * 2018-12-11 2021-09-07 温州大学 Preparation method and application of composite material of phosphorus-containing micromolecule functionalized carbon nanotube
CN109698331A (en) * 2018-12-11 2019-04-30 温州大学 Lithium-sulfur cell sulfite salt/carbon pipe carries the preparation method of sulphur composite positive pole
CN109728297A (en) * 2018-12-11 2019-05-07 温州大学 Metal phthalocyanine/carbon pipe composite material preparation method and its application in lithium-sulphur cell positive electrode
CN109728267A (en) * 2018-12-11 2019-05-07 温州大学 The composite material and preparation method thereof of phosphorous Small Molecule Functionalization carbon nanotube and application
CN109698331B (en) * 2018-12-11 2021-04-23 温州大学 Preparation method of sulfite/carbon tube sulfur-carrying composite positive electrode material in lithium-sulfur battery
CN109755504A (en) * 2018-12-13 2019-05-14 温州大学 Application containing ferriporphyrin/carbon/carbon nano tube compound anode material preparation method and its in lithium-sulphur cell positive electrode
CN109755504B (en) * 2018-12-13 2021-09-07 温州大学 Preparation method of ferriporphyrin/carbon nanotube composite positive electrode material and application of ferriporphyrin/carbon nanotube composite positive electrode material in positive electrode of lithium-sulfur battery
CN109755503A (en) * 2018-12-13 2019-05-14 温州大学 The preparation method and its application in lithium-sulfur cell that manganese sub-group compound/carbon pipe carries sulphur composite material
CN113410463A (en) * 2021-06-03 2021-09-17 江苏智泰新能源科技有限公司 Selenium metal compound-carbon material-sulfur composite cathode material, preparation method and application
CN113410463B (en) * 2021-06-03 2023-03-10 江苏智泰新能源科技有限公司 Selenium metal compound-carbon material-sulfur composite cathode material, preparation method and application

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