CN114388902B - Method for inhibiting zinc dendrite growth in zinc ion battery - Google Patents

Method for inhibiting zinc dendrite growth in zinc ion battery Download PDF

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Publication number
CN114388902B
CN114388902B CN202210006718.6A CN202210006718A CN114388902B CN 114388902 B CN114388902 B CN 114388902B CN 202210006718 A CN202210006718 A CN 202210006718A CN 114388902 B CN114388902 B CN 114388902B
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zinc
dendrite growth
ion battery
self
electrolyte
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CN114388902A (en
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徐林
刘琴
麦立强
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/36Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/38Construction or manufacture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/30Batteries in portable systems, e.g. mobile phone, laptop
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Primary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to a method for preparing an electrolyte with ultra-fast self-repairing performance to construct an electrolyte/zinc cathode dynamic self-adaptive interface to inhibit dendrite growth in a zinc battery. According to the invention, a certain amount of guar gum is completely dissolved into zinc salt solution to form uniform colloid. Subsequently, glycerol was added to the colloid prepared as described above to form a binary solvent system. And finally, adding a neutral organic boron crosslinking agent and curing the gel to obtain the gel with ultra-fast self-repairing performance. The gel is used for electrolyte in quasi-solid state battery, can construct dynamic continuous electrolyte/zinc cathode interface, inhibit dendrite growth and greatly prolong service life of zinc battery. The method has the advantages of low price, simple process, safety and environmental protection, and has the potential of large-scale application.

Description

Method for inhibiting zinc dendrite growth in zinc ion battery
Technical Field
The invention belongs to the technical field of material chemistry, and particularly relates to a method for inhibiting zinc dendrite growth in a zinc ion battery.
Background
The rapid growth in today's society has stimulated a need for flexible and wearable devices, mainly including portable electronics and smart wearable systems. Over the past few years, efforts have been made to produce high performance flexible lithium ion batteries. However, while lithium ion batteries offer higher energy and power densities, safety issues and limitations of lithium metal resources face significant hurdles for their practical use. Indeed, safety and non-toxicity are critical preconditions for wearable energy storage devices. In this case, an alternative strategy, zinc ion batteries, are of great interest due to their inherent safety, ease of manufacture, and low cost performance. However, the aqueous zinc ion battery is influenced by serious zinc dendrite and side reaction in the aqueous electrolyte for a long time, and finally the interface impedance is increased, so that a series of problems such as battery short circuit and the like are caused, and the cycle performance, the service life and the like of the zinc-based battery are influenced.
Scientific researchers construct three-dimensional polymer electrolytes, including anti-aging gels, ion-limited gels and artificial interface layers, and demonstrate effective inhibition of interfacial side reactions between electrolytes and zinc cathodes. However, in quasi-solid state battery construction, solid-solid interfacial contact is a challenge. 1) In the charge and discharge process, dendrite grows and dissolves dynamically, so that the static electrolyte interface and the dynamic zinc cathode interface cannot be tightly connected, micro-gaps appear, poor interface contact is caused, and the multiplying power capability of the battery is reduced. 2) Most hydrogels tend to lose water severely under dry conditions, which is a fatal drawback for practical use of the hydrogels. Therefore, it is important to construct a hydrogel with dynamic and strong interface contact and reliable water retention capability, which is a key principle of an efficient quasi-solid zinc ion battery interface strategy.
The hydrogel with ultra-fast self-repairing and excellent water retention performance is finally obtained by crosslinking natural polymers and introducing a second layer of network structure.
Disclosure of Invention
The invention aims to solve the problem of discontinuous solid-solid interface in a quasi-solid zinc ion battery and serious zinc dendrite growth caused by the discontinuous solid-solid interface, and provides a method for inhibiting zinc dendrite growth in the zinc ion battery.
In order to achieve the above object, the technical scheme of the present invention is as follows: a method of inhibiting zinc dendrite growth in a zinc ion battery comprising the steps of:
1) Completely dissolving a certain amount of guar gum into zinc salt solution to form uniform colloid;
2) Adding an appropriate amount of glycerol to the colloid prepared above to form a binary solvent system;
3) Adding a neutral organic boron crosslinking agent and curing the neutral organic boron crosslinking agent to obtain a self-repairing and self-adapting quasi-solid electrolyte;
4) And assembling the zinc anode, the cathode material and the self-adaptive quasi-solid electrolyte into the quasi-solid zinc ion battery without dendrite growth.
According to the scheme, the mass ratio of guar gum to zinc salt solution in the step 1) is 1% -6%.
According to the scheme, the zinc salt solution in the step 1) is any one of zinc sulfate, zinc trifluoromethane sulfonate and zinc chloride.
According to the scheme, in the step 2), glycerol: the volume ratio of the zinc salt solution is 0.15-2%.
According to the scheme, the cathode material in the step 4) is any one of polypyrrole, polyaniline, vanadium oxide, prussian blue and manganese oxide.
The electrolyte with ultra-fast self-repairing performance is prepared by the method, the shrinkage and expansion of a zinc cathode are dynamically adapted, a self-adaptive interface is constructed, the growth of zinc dendrites is restrained, a charge-discharge cycle experiment of a symmetrical battery is carried out under the condition of a certain current density, after 750 times of cycles, the zinc surface is uniformly deposited, no dendrite grows, and the electrolyte and the cathode interface are tightly connected.
The beneficial effects of the invention are as follows: the invention constructs an electrolyte with ultra-fast self-repairing performance by utilizing dynamic boric acid ester formed between an organic boron crosslinking agent and cis-diol in guar gum. The electrolyte has high water retention, and can dynamically adapt to expansion and contraction of the zinc cathode, so that the electrolyte/electrode interface always maintains a continuous and tight contact state, and growth of zinc cathode dendrite is inhibited. Wherein, glycerol can form a large number of intermolecular hydrogen bonds with water molecules to inhibit evaporation of water molecules, thereby enhancing water locking capacity of the gel. In addition, the glycerol-water binary system greatly enhances the mechanical toughness of the gel by introducing non-covalent bonds into the polymer network.
The invention has the characteristics of cheap and degradable raw materials, simple and environment-friendly process and excellent electrochemical performance of the material, and has the potential of large-scale application.
Drawings
FIG. 1 is an SEM image of a self-healing electrolyte prepared according to example 1;
FIG. 2 is a FTIR plot of a self-healing electrolyte prepared in example 1;
FIG. 3 is a graph showing the water retention property of the self-repairing electrolyte prepared in example 1;
FIG. 4 is a macroscopic characterization of the self-healing properties of the self-healing electrolyte prepared in example 1;
FIG. 5 is an optical plot of the in situ self-healing properties of the self-healing electrolyte prepared in example 1;
FIG. 6 is a self-healing electrolyte and a normal guar electrolyte obtained using the present inventionRespectively used as electrolyte in zinc// zinc symmetrical cell with current density of 0.5mA cm -2 In the case of a zinc// zinc symmetric cell.
Detailed Description
For a better understanding of the present invention, the following examples are further illustrated, but are not limited to the following examples.
Example 1:
1) 0.4g guar gum was dissolved in 10mL of a 1.5M zinc trifluoromethane sulfonate solution.
2) After the solution was completely dissolved, 0.1ml of glycerol was added thereto and magnetically stirred for 30 minutes.
3) 1ml of a neutral organoboron crosslinking agent was slowly added dropwise to the above mixed solution, and stirred with a glass rod to obtain a quasi-solid electrolyte with self-repairing and self-adaptation.
4) The zinc anode, the manganese oxide cathode and the gel electrolyte are assembled into a quasi-solid zinc ion battery without dendrite growth.
With the guar gum electrolyte obtained in this example as a porous network structure (fig. 1), FTIR spectra showed the generation of dynamic B-O bonds (fig. 2), and the gel electrolyte had excellent water retention properties (fig. 3) and ultra-fast self-healing properties (fig. 4 and 5). As can be seen from fig. 3, the water locking capacity of the pure guar hydrogel is the lowest, the water loss weight is 3 g, and the weight is reduced by 70% compared with the initial mass. In contrast, the water locking capacity of the self-healing electrolyte prepared by the invention slowly rises to 102% in the first 2 days, which can be attributed to the hygroscopicity of guar molecules. Thereafter, although fluctuating, it remained stable and remained around 100% for the next 6 days. Fig. 4 demonstrates macroscopically the self-healing properties of the gel, and fig. 5 demonstrates microscopically that the self-healing properties of the gel can be achieved within 30 seconds. When the self-repairing electrolyte in the present invention is not used in a zinc cell, the current density is 1mA cm -2 In the case of (2), after 550 hours of charge-discharge cycle of the battery, the voltage suddenly increases; when the self-healing electrolyte in the present invention is used in a zinc cell, the current density is 1mA cm -2 In the case of (a), the battery is charged and dischargedThe voltage is stable after 1500 hours (figure 6), which shows that zinc is deposited uniformly on the electrode, zinc dendrite growth is inhibited, and the service life of the zinc electrode is prolonged.
Example 2:
1) 0.4g guar gum was dissolved in 10mL of a 1.5M zinc trifluoromethane sulfonate solution.
2) After the solution was completely dissolved, 0.2ml of glycerol was added thereto and magnetically stirred for 30 minutes.
3) 1ml of a neutral organoboron crosslinking agent was slowly added dropwise to the above mixed solution, and stirred with a glass rod to obtain a quasi-solid electrolyte with self-repairing and self-adaptation.
4) The zinc anode, polyaniline cathode and gel electrolyte are assembled into a quasi-solid zinc ion battery without dendrite growth.
The materials prepared above were subjected to SEM, FTIR, water retention performance test analysis, and electrochemical performance test. The water retention performance remained stable over the 8 day test period. The electrochemical performance test shows that uniform zinc deposition is realized, zinc dendrite growth is inhibited, and the service life of the zinc electrode is prolonged.
Example 3:
1) 0.4g guar gum was dissolved in 10mL of a 1.5M zinc trifluoromethane sulfonate solution.
2) After the solution was completely dissolved, 0.1ml of glycerol was added thereto and magnetically stirred for 30 minutes.
3) 2ml of a neutral organoboron crosslinking agent was slowly added dropwise to the above mixed solution, and stirred with a glass rod to obtain a quasi-solid electrolyte with self-repairing and self-adaptation.
4) And assembling the zinc anode, the polypyrrole cathode and the gel electrolyte into a quasi-solid zinc ion battery without dendrite growth.
The materials prepared above were subjected to SEM, FTIR, water retention performance test analysis, and electrochemical performance test. The water retention performance remained stable over the 8 day test period. The electrochemical performance test shows that uniform zinc deposition is realized, zinc dendrite growth is inhibited, and the service life of the zinc electrode is prolonged.
Example 4:
1) 0.6g guar gum was dissolved in 10mL of a 1.5M zinc trifluoromethane sulfonate solution.
2) After the solution was completely dissolved, 0.1ml of glycerol was added thereto and magnetically stirred for 30 minutes.
3) 1ml of a neutral organoboron crosslinking agent was slowly added dropwise to the above mixed solution, and stirred with a glass rod to obtain a quasi-solid electrolyte with self-repairing and self-adaptation.
4) The zinc anode, vanadium oxide cathode and gel electrolyte are assembled into a quasi-solid zinc ion cell without dendrite growth.
The prepared material is subjected to SEM, FTIR, mechanical property test analysis and electrochemical property test. The water retention performance remained stable over the 8 day test period. The electrochemical performance test shows that uniform zinc deposition is realized, zinc dendrite growth is inhibited, and the service life of the zinc electrode is prolonged.
Example 5:
1) 0.6g guar gum was dissolved in 10mL of a 1.5M zinc chloride solution.
2) After the solution was completely dissolved, 0.1ml of glycerol was added thereto and magnetically stirred for 30 minutes.
3) 1ml of a neutral organoboron crosslinking agent was slowly added dropwise to the above mixed solution, and stirred with a glass rod to obtain a quasi-solid electrolyte with self-repairing and self-adaptation.
4) And assembling the zinc anode, the Prussian blue cathode and the gel electrolyte into a quasi-solid zinc ion battery without dendrite growth.
The prepared material is subjected to SEM, FTIR, mechanical property test analysis and electrochemical property test. The water retention performance remained stable over the 8 day test period. The electrochemical performance test shows that uniform zinc deposition is realized, zinc dendrite growth is inhibited, and the service life of the zinc electrode is prolonged.

Claims (5)

1. A method of inhibiting zinc dendrite growth in a zinc ion battery comprising the steps of:
1) Completely dissolving a certain amount of guar gum into zinc salt solution to form uniform colloid;
2) Adding an appropriate amount of glycerol to the colloid prepared above to form a binary solvent system;
3) Adding a neutral organoboron crosslinking agent and curing the solution, and obtaining self-repairing and self-adapting quasi-solid electrolyte by utilizing dynamic boric acid ester formed between the organoboron crosslinking agent and cis-diol in guar gum;
4) And assembling the zinc anode, the cathode material and the self-adaptive quasi-solid electrolyte into the water-based quasi-solid zinc ion battery without dendrite growth.
2. The method of inhibiting zinc dendrite growth in a zinc ion battery of claim 1 wherein: the mass ratio of guar gum to zinc salt solution in the step 1) is 1% -6%.
3. A method of inhibiting zinc dendrite growth in a zinc ion battery according to claim 1 or 2 characterized by: the zinc salt solution in the step 1) is any one of zinc sulfate, zinc trifluoromethane sulfonate and zinc chloride.
4. The method of inhibiting zinc dendrite growth in a zinc ion battery of claim 1 wherein: glycerol in step 2): the volume ratio of the zinc salt solution is 0.15% -2%.
5. The method of inhibiting zinc dendrite growth in a zinc ion battery of claim 1 wherein: the cathode material in the step 4) is any one of polypyrrole, polyaniline, vanadium oxide, prussian blue and manganese oxide.
CN202210006718.6A 2022-01-05 2022-01-05 Method for inhibiting zinc dendrite growth in zinc ion battery Active CN114388902B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406827A (en) * 1979-09-04 1983-09-27 Minnesota Mining And Manufacturing Company Cohesive nonsticky electrically conductive gel composition
KR20180062188A (en) * 2016-11-30 2018-06-08 주식회사 엘지화학 Binder for electrode, anode including the same and lithium secondary battery including the anode
CN109411833A (en) * 2018-10-26 2019-03-01 北京大学深圳研究生院 A kind of solid electrolyte, preparation method and application
WO2020217782A1 (en) * 2019-04-25 2020-10-29 三洋化成工業株式会社 Negative electrode addditive for alkaline battery, and alkaline battery
CN111883857A (en) * 2020-07-22 2020-11-03 厦门理工学院 Colloidal electrolyte and zinc ion battery comprising same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW557596B (en) * 2002-06-03 2003-10-11 Ming Chi Inst Of Technology The method of preparing the solid-state polymer Zn-air battery
US20150093649A1 (en) * 2012-04-09 2015-04-02 Showa Denko K.K. Method of producing current collector for electrochemical element, method of producing electrode for electrochemical element, current collector for electrochemical element, electrochemical element, and coating liquid for fabricating current collector for electrochemical element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406827A (en) * 1979-09-04 1983-09-27 Minnesota Mining And Manufacturing Company Cohesive nonsticky electrically conductive gel composition
KR20180062188A (en) * 2016-11-30 2018-06-08 주식회사 엘지화학 Binder for electrode, anode including the same and lithium secondary battery including the anode
CN109411833A (en) * 2018-10-26 2019-03-01 北京大学深圳研究生院 A kind of solid electrolyte, preparation method and application
WO2020217782A1 (en) * 2019-04-25 2020-10-29 三洋化成工業株式会社 Negative electrode addditive for alkaline battery, and alkaline battery
CN111883857A (en) * 2020-07-22 2020-11-03 厦门理工学院 Colloidal electrolyte and zinc ion battery comprising same

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