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Water-based rechargeable zinc ion battery alloy type negative electrode material and preparation method and application thereof

A zinc-ion battery and anode material technology, applied in battery electrodes, secondary batteries, sustainable manufacturing/processing, etc., can solve the problems of little research, reduced working life, and easy formation of dendrites, etc., to reduce production Cost, increase binding force, effect of increasing binding force

Active Publication Date: 2020-11-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Anode materials play a key role in the performance of rechargeable secondary batteries, however, there are very few studies on anode materials for aqueous Zn-ion rechargeable batteries
Metal zinc foil is the most commonly used negative electrode material, but it is very easy to form dendrites due to the tip effect during the long-term plating / stripping cycle, and the uncontrollable dendrite growth may pierce the separator and cause a battery short circuit. Reduce its working life and may even cause safety problems

Method used

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  • Water-based rechargeable zinc ion battery alloy type negative electrode material and preparation method and application thereof
  • Water-based rechargeable zinc ion battery alloy type negative electrode material and preparation method and application thereof
  • Water-based rechargeable zinc ion battery alloy type negative electrode material and preparation method and application thereof

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Embodiment approach

[0045] The third embodiment of the present invention provides an aqueous zinc-ion battery, the negative pole is the alloy-type negative electrode material of the above-mentioned water-system rechargeable zinc-ion battery, and the electrolyte is a zinc-salt system solution, an organic solution containing zinc salt, or a zinc-containing salt standard. solid electrolyte.

[0046] The fourth embodiment of the present invention provides an application of the above-mentioned alloy-type negative electrode material for a water-based zinc ion battery as a current collector for a zinc metal negative electrode of a water-based zinc metal battery.

[0047] In the present invention, the inert metal element can be alloyed with Zn or has better solubility at low temperature. When depositing an appropriate amount of inert metal element, it can be used as a nucleation site to reduce the nucleation barrier and reduce nucleation. The overpotential can effectively inhibit the growth of zinc dendr...

Embodiment 1

[0050] On carbon cloth current collector at 1mAcm -2 In the electroplating solution with an antimony ion concentration of 0.006 moles per liter, constant current electrodeposition, deposition at room temperature without stirring for 15 minutes, then washing with ethanol and deionized water, drying in a vacuum oven at 60 degrees Celsius, and finally After heating at 220° C. for 2 hours under the condition of vacuum degree of 10 Pa, and cooling down to room temperature, an alloy-type negative electrode material carbon cloth / antimony for aqueous zinc-ion batteries can be obtained.

[0051] Main application: used as alloy negative electrode material for aqueous zinc battery, assembled aqueous zinc ion half battery, the prepared carbon cloth / antimony is used as negative electrode material for aqueous zinc ion battery, zinc foil is used for counter electrode and reference electrode, and 2M zinc trifluoromethanesulfonate or zinc sulfate is used as the electrolyte, assembled and elect...

Embodiment 2

[0054] At 1mA cm on a titanium foil (Ti) current collector -2 In the electroplating solution with an antimony ion concentration of 0.006 moles per liter, constant current electrodeposition, deposition at room temperature without stirring for 10 minutes, then washing with ethanol and deionized water, drying in a vacuum oven at 60 degrees Celsius, and finally After heating at 340° C. for 0.5 h under a vacuum of 10 Pa and cooling down to room temperature, Ti / Sb, an alloy-type negative electrode material for aqueous zinc-ion batteries, can be obtained.

[0055] Used as an alloy-type negative electrode material for water-based zinc batteries, assembled with water-based zinc-ion half-cells, the prepared Ti / Sb is used as negative electrode materials for water-based zinc-ion batteries, and zinc foil is used for counter electrodes and reference electrodes, at 2 moles per liter Zinc trifluoromethanesulfonate or zinc sulfate is used as the electrolyte, assembled and electrochemically tes...

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Abstract

The invention discloses a water-based rechargeable zinc ion battery alloy type negative electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: electrochemically depositing a particle layer of a specific metal simple substance on a current collector, then performing heating to 50-450 DEG C under a vacuum condition, and treatingfor 0.1-5 hours; wherein the current collector is carbon cloth, carbon fiber paper, graphene paper, MXene, stainless steel foil or titanium foil, and the metal simple substance is antimony, cobalt, nickel, germanium, copper, silver or gold. The material prepared by the invention can be used as a dendritic-crystal-free alloy type negative electrode material and has high theoretical specific capacity; and the deposited metals can be used as nucleation seeds to effectively inhibit zinc dendrites, and the electrode material can reduce nucleation barriers, reduce nucleation overpotential, realizeuniform zinc deposition, effectively inhibit growth of the zinc dendrites and better exert the cycle stability of the zinc dendrites.

Description

technical field [0001] The invention belongs to the field of water system zinc battery negative electrodes, and relates to a water system rechargeable zinc ion battery alloy type negative electrode material and 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] At present, the global energy storage industry still maintains a relatively fast development speed. There is an urgent need for rechargeable and dischargeable secondary batteries in grid energy storage, base station backup power supply, household optical storage systems, and electric vehicle optical storage charging stations. The demand for batteries is increasing. Compar...

Claims

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Application Information

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IPC IPC(8): H01M4/42H01M4/66H01M10/38
CPCH01M4/42H01M4/662H01M10/38Y02E60/10Y02P70/50
Inventor 冯金奎田园安永灵
Owner SHANDONG UNIV
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