CN109686925A - A kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material - Google Patents

A kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material Download PDF

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CN109686925A
CN109686925A CN201710977277.3A CN201710977277A CN109686925A CN 109686925 A CN109686925 A CN 109686925A CN 201710977277 A CN201710977277 A CN 201710977277A CN 109686925 A CN109686925 A CN 109686925A
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ion battery
zinc
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electrode material
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魏春光
陈彦伊
梁燕
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Guangdong Province Shenzhen Baoan District Xixiang Peach Garden Science And Technology Innovation Park Garden 1 2 Floor 4 Points
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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
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/38—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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • 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
    • 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
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Abstract

The invention belongs to Zinc ion battery field, a kind of Zinc ion battery and its MnO are related to2The preparation method of/C positive electrode material.The Zinc ion battery is made of anode, cathode, diaphragm and its electrolyte.Negative electrode material is based on Zn-ef ficiency, and it is solute, water for solvent that electrolyte, which is using soluble zinc salt and micro manganese salt, positive electrode MnO2/C.The preparation method prepares MnCO first with coprecipitation3Presoma, after the MnO of spinel structure is made by mixed calcining2/ C micron ball.The MnO that the method for the present invention obtains2/ C micron ball dispersion effect is good, and agglomeration and electric conductivity are obviously improved, and improves the cyclical stability of battery, forthright again and security performance, has very wide application prospect in the fields such as portable electronic product and power product.

Description

A kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material
Technical field
The invention belongs to Zinc ion battery field, a kind of Zinc ion battery and its MnO are related to2The preparation of/C positive electrode material Method.
Background technique
In recent years, with the development of economy with people to the exhaustive exploitation and benefit of the resources such as petroleum, coal, natural gas With having resulted in the increasingly exhausted and environmental pollution of non-renewable resources.The energy and environment, which have become, hinders the world today The problem of sustainable development.Therefore, it finds the green energy resource of substitution conventional fossil fuel and seeks the harmonious development of human and environment Seem especially urgent.Due to Zinc ion battery because its divalent metal can increase the specific discharge capacity of battery system, also because of its tool There are small size, low cost, aqueous electrolyte, green non-pollution, so making Zinc ion battery by extensive concern.Zinc ion Battery is made of anode, cathode, electrolyte and diaphragm, just can extremely be embedded in the active material of zinc ion, cathode be zinc metal sheet or Zinc powder, based on aqueous electrolyte, diaphragm is used to prevent the direct contact of positive and negative anodes and short circuit occurs electrolyte.
MnO2Have the characteristics that high power density and high-energy density, and coulombic efficiency as Zinc ion battery positive electrode Close to 100%.In addition, manganese element nature rich reserves, environmentally protective, be used as Zinc ion battery electrode material have it is huge latent Power.But MnO2Still remain electron conduction difference and Zn+Two problems of volume expansion occur in insertion abjection process, this obstruction Its practical application in ion battery.In order to solve both of these problems, carbon coating is a kind of effectively approach.Uniformly Carbon coating can effectively improve the electron conduction of material, Zn is effectively relieved+It is embedded in the volume expansion that abjection process occurs, from And improve the cyclical stability and high rate performance of material.
105070901 A of Patent publication No CN has invented a kind of zinc lithium manganese aqoue seconary battery, but positive electrode manganese oxide The volume change that the electric conductivity of lithium occurs with insertion abjection is not resolved, so as to cause poor cyclical stability and again Rate performance.105375019 A of Patent publication No CN discloses a kind of Zinc ion battery positive electrode ZnMn2xCoxO4, cluster of grains Poly- phenomenon is improved, but the electric conductivity of material does not solve still, and cyclical stability is poor, it is impossible to be used in actual production.
Summary of the invention
There are specific capacities it is an object of the invention to overcoming existing Zinc ion battery positive electrode low, cyclical stability and again The disadvantage of forthright difference provides the preparation method of a kind of Rechargeable zinc ion battery and its positive electrode.
In order to achieve this, the technical solution adopted in the present invention is as follows:
1. a kind of Rechargeable zinc ion battery, including anode, cathode, electrolyte and diaphragm, negative electrode material is based on Zn-ef ficiency, electricity It is solute, water for solvent that solution liquid, which is using soluble zinc salt and micro manganese salt, and diaphragm is pulp layered paper, Ni-Zn diaphragm, sulfonated membrane And dust-free paper, positive electrode MnO2/C。
Negative electrode material described in above-mentioned steps 1 is zinc metal sheet or zinc powder, and positive electrode is MnO2/C。
Electrolyte described in above-mentioned steps 1 is the soluble zinc salt of 0.5 ~ 5mol/L and the manganese of 0.02 ~ 0.2mol/L Salt, solvent are water.
Soluble zinc salt described in above-mentioned steps 1 can be zinc sulfate, zinc nitrate, zinc chloride and trifluoromethayl sulfonic acid Zinc, manganese salt can be manganese sulfate, manganese nitrate, manganese chloride and trifluoromethayl sulfonic acid manganese.
Micro manganese salt can effectively improve the stable circulation of Zinc ion battery in electrolyte described in above-mentioned steps 1 Property.
Diaphragm described in above-mentioned steps 1 is one of pulp layered paper, Ni-Zn diaphragm, sulfonated membrane and dust-free paper or several Kind, the puncture of cathode dendrite can be effectively prevent.
2. a kind of MnO2The preparation method of/C positive electrode material, which is characterized in that method includes the following steps:
(1) precursor preparation: being dissolved in 70ml deionized water for manganese salt and bicarbonate respectively, wherein the concentration of manganese salt be 0.01 ~ 0.1mol/L, the solubility of bicarbonate are 0.1 ~ 1mol/L, and 3 ~ 10ml ethyl alcohol is then added into manganese salt.After being uniformly dispersed, Two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, after 1-5h, precipitating is centrifuged, wash, is dried, is obtained MnCO3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the carbon source of 1mg/ml, uses Muffle furnace in inertia after dry 300 ~ 500 °C of calcining 2-10h, obtain the MnO of spinel structure under gas atmosphere2, heating rate is 1-10 °C/min；
The concentration of manganese salt described in above-mentioned steps (1) is 0.01 ~ 0.1mol/L, and the solubility of bicarbonate is 0.1 ~ 1mol/L, The amount that ethyl alcohol is added is 3 ~ 10ml, reaction time 1-5h.
Manganese salt described in above-mentioned steps (1) is MnSO4Or MnCl2One of, bicarbonate NH4HCO3Or NaHCO3 One of.
Carbon source described in above-mentioned steps (2) is glucose, sucrose or maleic acid, and calcination temperature is 250 ~ 500 °C, calcining Time is 2-10h, and heating rate is 1-10 °C/min.
Beneficial effects of the present invention: 1, the present invention relates to a kind of Zinc ion battery and its MnO2The preparation of/C positive electrode material Method.The Zinc ion battery is made of anode, cathode, diaphragm and its electrolyte.Based on Zn-ef ficiency, electrolyte is negative electrode material It is solvent, positive electrode MnO using soluble zinc salt and micro manganese salt as solute, water2/ C, works in coordination, and effectively increases The cyclical stability of Zinc ion battery.2, the preparation method prepares MnCO first with coprecipitation3Presoma, after by with carbon source Mixed calcining be made spinel structure MnO2/ C micron ball, improves electric conductivity, forthright again to be improved.3, institute of the present invention Using preparation method, it is evenly coated, is simple process, portable strong.
Detailed description of the invention
Fig. 1 is MnO prepared by the present invention2/ C positive electrode material scanning electron microscope diagram piece.
Fig. 2 is MnO prepared by the present invention2/ C positive electrode material XRD spectrum.
Fig. 3 is the battery performance figure of example one to six.Current density is respectively 0.1A/g, 0.2A/g, 0.5A/g, 1A/g, 2A/g, each 5 circle.
Specific embodiment
The present invention provides a kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material, below with reference to embodiment The present invention will be further described.
Embodiment one:
1. Zinc ion battery includes anode, cathode, electrolyte and diaphragm, negative electrode material is zinc metal sheet, and electrolyte is the sulphur of 3mol/L Sour zinc adds the manganese sulfate of 0.1mol/L, and diaphragm is sulfonated membrane and two kinds of dust-free paper, positive electrode MnO2/C。
2. MnO2The preparation of/C positive electrode material:
(1) precursor preparation: by the MnSO of 0.05mol/L4With the NH of 0.5mol/L4HCO3It is dissolved in 70ml deionized water respectively, so Backward MnSO47ml ethyl alcohol is added in solution.After being uniformly dispersed, two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, After 2h, precipitating is centrifuged, washed, is dried, MnCO is obtained3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the sucrose solution of 1mg/ml, is existed after dry with Muffle furnace N2The lower 400 °C of calcinings 5h of atmosphere, obtains the MnO of spinel structure2/ C, heating rate are 5 °C/min；
Embodiment two:
1. Zinc ion battery includes anode, cathode, electrolyte and diaphragm, negative electrode material is zinc powder, and electrolyte is the nitre of 3mol/L Sour zinc adds the manganese nitrate of 0.1mol/L, and diaphragm is two kinds of Ni-Zn diaphragm, positive electrode MnO2/C。
2. MnO2The preparation of/C positive electrode material:
(1) precursor preparation: by the MnCl of 0.1mol/L2With the NaHCO of 1mol/L3It is dissolved in 70ml deionized water respectively, then To MnCl27ml ethyl alcohol is added in solution.After being uniformly dispersed, two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, 2h Afterwards, precipitating is centrifuged, washed, dried, obtain MnCO3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the glucose solution of 1mg/ml, uses Muffle furnace after dry In N2The lower 400 °C of calcinings 2h of atmosphere, obtains the MnO of spinel structure2/ C, heating rate are 10 °C/min；
Embodiment three:
1. Zinc ion battery includes anode, cathode, electrolyte and diaphragm, negative electrode material is zinc metal sheet, and electrolyte is the three of 3mol/L Fluoromethane sulfonic acid zinc adds the trifluoromethayl sulfonic acid manganese of 0.1mol/L, and diaphragm is sulfonated membrane and two kinds of dust-free paper, and positive electrode is MnO2/C。
2. MnO2The preparation of/C positive electrode material:
(1) precursor preparation: by the MnSO of 0.05mol/L4With the NaHCO of 0.5mol/L3It is dissolved in 70ml deionized water respectively, so Backward MnSO45ml ethyl alcohol is added in solution.After being uniformly dispersed, two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, After 5h, precipitating is centrifuged, washed, is dried, MnCO is obtained3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the maleic acid solution of 1mg/ml, uses Muffle furnace after dry In N2The lower 300 °C of calcinings 3h of atmosphere, obtains the MnO of spinel structure2/ C, heating rate are 5 °C/min；
Example IV:
1. Zinc ion battery includes anode, cathode, electrolyte and diaphragm, negative electrode material is zinc powder, and electrolyte is the sulphur of 1mol/L Sour zinc adds the manganese sulfate of 0.1mol/L, and diaphragm is pulp layered paper, positive electrode MnO2/C。
2. MnO2The preparation of/C positive electrode material:
(1) precursor preparation: by the MnCl of 0.1mol/L2With the NH of 1mol/L4HCO3It is dissolved in 70ml deionized water respectively, then To MnCl210ml ethyl alcohol is added in solution.After being uniformly dispersed, two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, After 2h, precipitating is centrifuged, washed, is dried, MnCO is obtained3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the glucose solution of 1mg/ml, uses Muffle furnace after dry 400 °C of calcining 5h under an ar atmosphere, obtain the MnO of spinel structure2/ C, heating rate are 10 °C/min；
Embodiment five:
1. Zinc ion battery includes anode, cathode, electrolyte and diaphragm, negative electrode material is zinc metal sheet, and electrolyte is the three of 1mol/L Fluoromethane sulfonic acid zinc adds the trifluoromethayl sulfonic acid manganese of 0.1mol/L, and diaphragm is sulfonated membrane and two kinds of pulp layered paper, and positive electrode is MnO2/C。
2. MnO2The preparation of/C positive electrode material:
(1) precursor preparation: by the MnSO of 0.05mol/L4With the NH of 0.5mol/L4HCO3It is dissolved in 70ml deionized water respectively, so Backward MnSO45ml ethyl alcohol is added in solution.After being uniformly dispersed, two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, After 2h, precipitating is centrifuged, washed, is dried, MnCO is obtained3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the sucrose solution of 1mg/ml, is existed after dry with Muffle furnace N2The lower 500 °C of calcinings 5h of atmosphere, obtains the MnO of spinel structure2/ C, heating rate are 5 °C/min；
Embodiment six:
1. Zinc ion battery includes anode, cathode, electrolyte and diaphragm, negative electrode material is zinc metal sheet, and electrolyte is the three of 1mol/L Fluoromethane sulfonic acid zinc adds the trifluoromethayl sulfonic acid manganese of 0.1mol/L, and diaphragm is dust-free paper, positive electrode MnO2/C。
2. MnO2The preparation of/C positive electrode material:
(1) precursor preparation: by the MnSO of 0.05mol/L4With the NH of 0.5mol/L4HCO3It is dissolved in 70ml deionized water respectively, so Backward MnSO410ml ethyl alcohol is added in solution.After being uniformly dispersed, two kinds of solution are mixed at room temperature and be co-precipitated instead It answers, after 5h, precipitating is centrifuged, wash, is dried, MnCO is obtained3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the maleic acid solution of 1mg/ml, uses Muffle furnace after dry In N2The lower 250 °C of calcinings 5h of atmosphere, obtains the MnO of spinel structure2/ C, heating rate are 10 °C/min.

Claims (10)

1. a kind of Rechargeable zinc ion battery, including anode, cathode, electrolyte and diaphragm, negative electrode material is based on Zn-ef ficiency, electricity It is solute, water for solvent that solution liquid, which is using soluble zinc salt and micro manganese salt, and diaphragm is pulp layered paper, Ni-Zn diaphragm, sulfonated membrane And dust-free paper, positive electrode MnO2/C。
2. a kind of Rechargeable zinc ion battery according to claim 1, which is characterized in that negative electrode material is zinc metal sheet or zinc Powder, positive electrode are MnO2/C。
3. a kind of Rechargeable zinc ion battery according to claim 1, which is characterized in that electrolyte is 0.5 ~ 5mol/L Soluble zinc salt and 0.02 ~ 0.2mol/L manganese salt, solvent is water.
4. a kind of Rechargeable zinc ion battery according to claim 1, which is characterized in that soluble zinc salt can be sulfuric acid Zinc, zinc nitrate, zinc chloride and trifluoromethayl sulfonic acid zinc, manganese salt can be manganese sulfate, manganese nitrate, manganese chloride and trifluoromethayl sulfonic acid Manganese.
5. a kind of Rechargeable zinc ion battery according to claim 1, which is characterized in that micro manganese salt can in electrolyte To effectively improve the cyclical stability of Zinc ion battery.
6. a kind of Rechargeable zinc ion battery according to claim 1, which is characterized in that diaphragm be pulp layered paper, Ni-Zn every One or both of film, sulfonated membrane and dust-free paper.
7. a kind of MnO2The preparation method of/C positive electrode material, which is characterized in that method includes the following steps:
(1) precursor preparation: being dissolved in 70ml deionized water for manganese salt and bicarbonate respectively, wherein the concentration of manganese salt be 0.01 ~ 0.1mol/L, the solubility of bicarbonate are 0.1 ~ 1mol/L, and 3 ~ 10ml ethyl alcohol is then added into manganese salt, after being uniformly dispersed, Two kinds of solution are mixed at room temperature and carry out coprecipitation reaction, after 1-5h, precipitating is centrifuged, wash, is dried, is obtained MnCO3Presoma；
(2) mixed calcining: by the MnCO of preparation3Presoma is dispersed in the carbon source of 1mg/ml, uses Muffle furnace in indifferent gas after dry 300 ~ 500 °C of calcining 2-10h, obtain the MnO of spinel structure under body atmosphere2, heating rate is 1-10 °C/min.
8. a kind of MnO according to claim 62The preparation method of/C positive electrode material, which is characterized in that in step (1), manganese The concentration of salt is 0.01 ~ 0.1mol/L, and the solubility of bicarbonate is 0.1 ~ 1mol/L, and the amount that ethyl alcohol is added is 3 ~ 10ml, reaction Time is 1-5h.
9. a kind of MnO according to claim 62The preparation method of/C positive electrode material, which is characterized in that in step (1), manganese Salt is MnSO4Or MnCl2One of, bicarbonate NH4HCO3Or NaHCO3One of.
10. a kind of MnO according to claim 62The preparation method of/C positive electrode material, which is characterized in that in step (2), carbon Source be glucose, sucrose or maleic acid, calcination temperature be 250 ~ 500 °C, calcination time 2-10h, heating rate be 1-10 °C/ min。
CN201710977277.3A 2017-10-19 2017-10-19 A kind of Zinc ion battery and its MnO2The preparation method of/C positive electrode material Withdrawn CN109686925A (en)

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CN110350133A (en) * 2019-07-23 2019-10-18 四川新力能源科技有限公司 Rechargeable sealed zinc ion battery
CN110416530A (en) * 2019-06-21 2019-11-05 广东工业大学 A kind of flower-shaped manganese dioxide/carbon composite material and preparation method and application
CN110828799A (en) * 2019-10-31 2020-02-21 北京科技大学 Water-system zinc ion battery MnOx@ C cathode material and preparation method thereof
CN110931779A (en) * 2019-11-21 2020-03-27 北京科技大学 High-capacity long-life aqueous zinc ion battery positive electrode material and preparation method thereof
CN111769251A (en) * 2020-04-10 2020-10-13 上海大学 Method for protecting metal electrode
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CN110416530A (en) * 2019-06-21 2019-11-05 广东工业大学 A kind of flower-shaped manganese dioxide/carbon composite material and preparation method and application
CN110350133A (en) * 2019-07-23 2019-10-18 四川新力能源科技有限公司 Rechargeable sealed zinc ion battery
CN110828799A (en) * 2019-10-31 2020-02-21 北京科技大学 Water-system zinc ion battery MnOx@ C cathode material and preparation method thereof
CN110931779A (en) * 2019-11-21 2020-03-27 北京科技大学 High-capacity long-life aqueous zinc ion battery positive electrode material and preparation method thereof
WO2021110000A1 (en) * 2019-12-06 2021-06-10 瑞海泊(青岛)能源科技有限公司 Zinc ion battery positive electrode material, preparation method therefor, and application thereof
JP2023504864A (en) * 2019-12-06 2023-02-07 リハブ （チンタオ） エナジー テクノロジー カンパニー リミテッド Cathode material for zinc ion battery, its preparation method and use
CN112952053A (en) * 2019-12-11 2021-06-11 中国科学院苏州纳米技术与纳米仿生研究所 Zinc ion battery
CN112952053B (en) * 2019-12-11 2022-04-29 中国科学院苏州纳米技术与纳米仿生研究所 Zinc ion battery
CN111769251A (en) * 2020-04-10 2020-10-13 上海大学 Method for protecting metal electrode
CN112803028A (en) * 2020-12-17 2021-05-14 华中师范大学 Ultrafast-charging manganese-zinc battery
CN112687967A (en) * 2020-12-23 2021-04-20 清华大学深圳国际研究生院 Zinc ion battery and power utilization device using same
CN112837944A (en) * 2021-01-06 2021-05-25 广州金立电子有限公司 High-voltage-resistant capacitor electrolyte and capacitor
CN112837944B (en) * 2021-01-06 2022-05-31 广州金立电子有限公司 High-voltage-resistant capacitor electrolyte and capacitor
CN115072784A (en) * 2022-05-10 2022-09-20 五邑大学 Sodium-doped manganese oxide material, and preparation and application thereof

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Application publication date: 20190426