CN104638247A - Preparation method of lithium battery - Google Patents

Preparation method of lithium battery Download PDF

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Publication number
CN104638247A
CN104638247A CN201410750186.2A CN201410750186A CN104638247A CN 104638247 A CN104638247 A CN 104638247A CN 201410750186 A CN201410750186 A CN 201410750186A CN 104638247 A CN104638247 A CN 104638247A
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China
Prior art keywords
preparation
lithium battery
battery
tube
carbon nano
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CN201410750186.2A
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Chinese (zh)
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程如铁
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Individual
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Priority to CN201410750186.2A priority Critical patent/CN104638247A/en
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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
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Nanotechnology (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention relates to the technical field of novel chemical materials and in particular relates to a preparation method of a lithium battery. The preparation method of the lithium battery comprises the following steps: 1, preparing active materials; 2, preparing an anode plate; and 3, assembling a battery. According to the preparation method disclosed by the invention, elemental sulfur is embedded into a porous carbon material with nanometer micropores to prepare an anode composite, the anode composite is good in conductivity, large in specific surface area and strong in adsorption capability to a reduction product, and therefore, the conductivity, the utilization ratio and the cyclicity of a sulfur electrode are wholly improved, and the energy density of a lithium/sulfur battery prepared by the sulfur electrode is high.

Description

A kind of preparation method of lithium battery
Technical field
The present invention relates to New Chemical Materials technical field, be specifically related to a kind of preparation method of lithium battery.
Background technology
Elemental sulfur, because having the multiple advantages such as very high theoretical energy density, abundant natural resources and nontoxicity, becomes the preferred material substituting existing various anode material of lithium battery in lithium battery of future generation.And have and design, namely changing its physical and chemical performance by the method such as coated, is potential practical high-energy-density positive electrode, larger investigation and application is had to be worth, but it is non-conductive to there is elemental sulfur, the phenomenons such as active material utilization is low, this seriously constrains the practicalization of this battery.
Summary of the invention
The present invention is intended to the preparation method proposing a kind of lithium battery.
Technical program of the present invention lies in:
A preparation method for lithium battery, comprises the following steps:
Step 1: the preparation of active material:
(1) carbon nano-tube is impregnated in the KOH solution of 6mol/L, is mixed with mixed serum, then carry out ultrasonic process 2h; Then 110 DEG C of dryings after standing 12h; Put into active 4-6h in Muffle furnace, active temperature 700 DEG C; Make solution be acid by salt acid soak after cooling, repeatedly rinse to neutrality with distilled water, dry, obtain the carbon nano-tube after activating;
(2) after the carbon nano-tube after activation and elemental sulfur being pressed the mass ratio grinding evenly of 1:5, put into sealed reactor, first carbon nano-tube and elemental sulfur mixture are heated to 120 DEG C, keep 2h at this temperature, after be heated to 150 DEG C keep 1h, be heated to 150 DEG C after cooling to 120 DEG C again, keep 1h, obtain black active material.
Step 2: the preparation of anode pole piece:
By the positive electrode active materials porphyrize of above-mentioned acquisition, active material, acetylene black and politef are mixed, adds dispersant, repeatedly rolling to desired thickness, then its punching is become disk, take nickel foam as collector, make positive plate, finally vacuumize 12h at 60 DEG C.
Step 3: the assembling of battery:
With lithium sheet for cathode pole piece, take Celgard2400 as serondary lithium battery barrier film, electrolyte is the LiPF of 1mol/L 6, in the glove box constantly passing into dry air, assemble simulated battery, after leaving standstill 24h afterwards, obtain lithium battery.
Preferably, the mixing quality of described active material, acetylene black and politef is than being 70:20:10.
Or preferably, described dispersant is absolute ethyl alcohol.
Technique effect of the present invention is:
Elemental sulfur embeds by the present invention to be had nanometer level microporous porous carbon materials and makes positive pole and meet material, this material have good conductivity, specific area large, to the reduzate of sulphur, there is powerful adsorption capacity, therefore the conductivity of sulfur electrode, utilance and cyclicity can be improved on the whole, high with the lithium prepared by it/sulphur battery energy density.
Embodiment
A preparation method for lithium battery, comprises the following steps:
Step 1: the preparation of active material:
(1) carbon nano-tube is impregnated in the KOH solution of 6mol/L, is mixed with mixed serum, then carry out ultrasonic process 2h; Then 110 DEG C of dryings after standing 12h; Put into active 4-6h in Muffle furnace, active temperature 700 DEG C; Make solution be acid by salt acid soak after cooling, repeatedly rinse to neutrality with distilled water, dry, obtain the carbon nano-tube after activating;
(2) after the carbon nano-tube after activation and elemental sulfur being pressed the mass ratio grinding evenly of 1:5, put into sealed reactor, first carbon nano-tube and elemental sulfur mixture are heated to 120 DEG C, keep 2h at this temperature, after be heated to 150 DEG C keep 1h, be heated to 150 DEG C after cooling to 120 DEG C again, keep 1h, obtain black active material.
Step 2: the preparation of anode pole piece:
By the positive electrode active materials porphyrize of above-mentioned acquisition, active material, acetylene black and politef are mixed, adds dispersant, repeatedly rolling to desired thickness, then its punching is become disk, take nickel foam as collector, make positive plate, finally vacuumize 12h at 60 DEG C.
Step 3: the assembling of battery:
With lithium sheet for cathode pole piece, take Celgard2400 as serondary lithium battery barrier film, electrolyte is the LiPF of 1mol/L 6, in the glove box constantly passing into dry air, assemble simulated battery, after leaving standstill 24h afterwards, obtain lithium battery.
Wherein, the mixing quality of active material, acetylene black and politef is than being 70:20:10.Dispersant is absolute ethyl alcohol.

Claims (3)

1. a preparation method for lithium battery, is characterized in that: comprise the following steps:
Step 1: the preparation of active material:
(1) carbon nano-tube is impregnated in the KOH solution of 6mol/L, is mixed with mixed serum, then carry out ultrasonic process 2h; Then 110 DEG C of dryings after standing 12h; Put into active 4-6h in Muffle furnace, active temperature 700 DEG C; Make solution be acid by salt acid soak after cooling, repeatedly rinse to neutrality with distilled water, dry, obtain the carbon nano-tube after activating;
(2) after the carbon nano-tube after activation and elemental sulfur being pressed the mass ratio grinding evenly of 1:5, put into sealed reactor, first carbon nano-tube and elemental sulfur mixture are heated to 120 DEG C, keep 2h at this temperature, after be heated to 150 DEG C keep 1h, be heated to 150 DEG C after cooling to 120 DEG C again, keep 1h, obtain black active material;
Step 2: the preparation of anode pole piece:
By the positive electrode active materials porphyrize of above-mentioned acquisition, active material, acetylene black and politef are mixed, adds dispersant, repeatedly rolling to desired thickness, then its punching is become disk, take nickel foam as collector, make positive plate, finally vacuumize 12h at 60 DEG C;
Step 3: the assembling of battery:
With lithium sheet for cathode pole piece, take Celgard2400 as serondary lithium battery barrier film, electrolyte is the LiPF of 1mol/L 6, in the glove box constantly passing into dry air, assemble simulated battery, after leaving standstill 24h afterwards, obtain lithium battery.
2. as the preparation method of claim 1 lithium battery, it is characterized in that: the mixing quality of described active material, acetylene black and politef is than being 70:20:10.
3. as the preparation method of claim 1 lithium battery, it is characterized in that: described dispersant is absolute ethyl alcohol.
CN201410750186.2A 2014-12-10 2014-12-10 Preparation method of lithium battery Pending CN104638247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410750186.2A CN104638247A (en) 2014-12-10 2014-12-10 Preparation method of lithium battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410750186.2A CN104638247A (en) 2014-12-10 2014-12-10 Preparation method of lithium battery

Publications (1)

Publication Number Publication Date
CN104638247A true CN104638247A (en) 2015-05-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107732284A (en) * 2017-10-11 2018-02-23 镇江乐科信息科技有限公司 A kind of environmentally friendly lithium battery preparation of batch method
CN114597411A (en) * 2022-03-02 2022-06-07 陕西科技大学 Acetylene black flexible sulfur fixation material, preparation method thereof, sulfur fixation method and lithium-sulfur battery positive electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107732284A (en) * 2017-10-11 2018-02-23 镇江乐科信息科技有限公司 A kind of environmentally friendly lithium battery preparation of batch method
CN114597411A (en) * 2022-03-02 2022-06-07 陕西科技大学 Acetylene black flexible sulfur fixation material, preparation method thereof, sulfur fixation method and lithium-sulfur battery positive electrode
CN114597411B (en) * 2022-03-02 2023-03-14 陕西科技大学 Acetylene black flexible sulfur fixation material, preparation method thereof, sulfur fixation method and lithium-sulfur battery positive electrode

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