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A kind of zinc ion battery electrolyte modifier and its preparation method and application

A zinc-ion battery, electrolyte technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of poor battery life, aggravated dendrite growth, etc., achieve low cost, reduce corrosion and passivation, and can size control effect

Active Publication Date: 2022-04-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unstable current densities and ion concentrations at dendrites will further exacerbate dendrite growth, ultimately resulting in poor rechargeable battery life

Method used

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  • A kind of zinc ion battery electrolyte modifier and its preparation method and application
  • A kind of zinc ion battery electrolyte modifier and its preparation method and application
  • A kind of zinc ion battery electrolyte modifier and its preparation method and application

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preparation example Construction

[0027] In one embodiment of the present disclosure, a method for preparing an electrolyte modifier for a zinc-ion battery includes: two-dimensional MXene colloidal solution is obtained by etching and stripping with mild fluoride and acid etchant, TiO 2 The nanosheets are obtained by oxidizing the two-dimensional MXene colloidal solution with a hydrothermal method.

[0028] In one embodiment of the present disclosure, a method for preparing an electrolyte modifier for a zinc ion battery specifically includes:

[0029] Preparation of two-dimensional MXene colloidal solution: Stir the powder of the MAX phase in a mixed solution of acid and fluoride, then add water and centrifuge to remove excess acid and fluoride, and then peel off the multilayer MXene by ultrasonic stripping or adding a layering reagent and centrifuging , the monolayer / less layered MXene colloidal solution obtained by separation;

[0030] Preparation of high safety and long life zinc ion battery electrolyte mod...

Embodiment 1

[0050] A zinc ion battery electrolyte modifier, the preparation method is as follows:

[0051] Weighing Ti in MAX phase 3 AlC 2 0.8g powder, dissolved in a mixed solution of hydrochloric acid and lithium fluoride and stirred, then added water and centrifuged to remove excess acid and fluoride, and then centrifuged at 2000r / min to peel off multi-layer MXene, and the obtained monolayer / less layer of MXene colloidal solution;

[0052] Then, 50ml of MXene colloidal solution was heated at 200°C for 48 hours, centrifuged to take the bottom solid, vacuum dried in a vacuum oven at 60°C, and ground to obtain TiO 2 Nanosheet Modifier.

[0053] Such as figure 1 Shown, TiO 2 The characteristic peaks of nanosheets correspond to PDF cards 21-1272 and 21-1276, which are mixed phases of spinel and anatase. TiO 2 It can induce the uniform distribution of the electric field on the surface of the zinc metal, effectively suppress the tip effect on the surface of the zinc negative electrode...

Embodiment 2

[0056] A zinc ion battery electrolyte modifier, the preparation method is as follows:

[0057] Weighing Ti in MAX phase 3 AlC 2 0.8g powder, dissolved in a mixed solution of hydrochloric acid and lithium fluoride and stirred, then added water and centrifuged to remove excess acid and fluoride, and then centrifuged at 2000r / min to peel off multi-layer MXene, and the obtained monolayer / less layer of MXene colloidal solution;

[0058] Then, heat 100ml of MXene colloidal solution at 150°C for 24 hours, centrifuge to get the bottom solid, vacuum dry in a vacuum oven at 80°C, and grind to obtain TiO 2 Nanosheet Modifier.

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Abstract

The invention relates to the technical field of zinc ion batteries, in particular to a zinc ion battery electrolyte modifier and its preparation method and application. The modifier is TiO obtained by hydrothermal oxidation of a two-dimensional MXene colloidal solution 2 Nanosheets. The modifier can effectively reduce the corrosion and passivation of the zinc negative electrode, inhibit the formation of zinc dendrites, and realize the high safety and long life of the zinc ion battery.

Description

technical field [0001] The invention relates to the technical field of zinc ion batteries, in particular to an electrolyte modifier for zinc ion batteries, a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the rapid development of microelectronic information technology, the demand for electric vehicles and large-scale energy storage is increasing. Based on the current urgent demand for green, efficient and practical energy storage materials, high-performance and large-capacity secondary energy storage can be recharged The development of discharge batteries is imminent. Zinc-ion secondary batteries have the advantages of hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/36C01G23/053B82Y40/00
CPCC01G23/053B82Y40/00H01M10/36C01P2004/24Y02E60/10
Inventor 冯金奎刘承凯田园安永灵
Owner SHANDONG UNIV
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