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Zinc ion battery and electric device using same

A zinc ion battery and zinc salt technology, applied in the field of electrochemistry, to achieve the effects of inhibiting pH changes, inhibiting generation, and reducing electrode reaction impedance

Pending Publication Date: 2021-04-20
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for the aforementioned secondary zinc-ion battery, there are three reaction mechanisms of zinc ion intercalation, zinc ion and proton co-intercalation, zinc ion intercalation and proton conversion.

Method used

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  • Zinc ion battery and electric device using same
  • Zinc ion battery and electric device using same
  • Zinc ion battery and electric device using same

Examples

Experimental program
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Effect test

Embodiment 1

[0062] Preparation of the positive electrode sheet: 70 mg of manganese-based oxide, 20 mg of acetylene black and 10 mg of polytetrafluoroethylene were stirred evenly and coated on stainless steel foil, dried in a vacuum oven at 80 degrees Celsius, and then punched to obtain a diameter of 1.2 cm first positive electrode piece and second positive electrode piece.

[0063] Preparation of negative electrode sheet: Stir 0.35 grams of zinc powder, 0.05 grams of acetylene black, 0.05 grams of carbon nanotubes and 0.05 grams of binder evenly and coat them on a 0.1 mm thick copper foil, bake in a vacuum oven at 80°C dry, and then punched to obtain a first negative electrode sheet and a second negative electrode sheet with a diameter of 1.2 cm.

[0064] Electrolyte preparation: 2mol / L ZnSO 4 and 0.5mol / L MnSO 4 The first electrolyte was prepared from an aqueous solution, and the second electrolyte was prepared by adding 0.1 mol / L potassium dihydrogen phosphate (pH buffer) to the first...

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Abstract

The invention provides a zinc ion battery, which comprises a positive electrode, a negative electrode and an electrolyte, the electrolyte infiltrates the positive electrode and the negative electrode: the positive electrode comprises a manganese-based compound; the negative electrode contains a zinc element; the electrolyte comprises a pH buffer agent, the pH buffer agent contains a weak acid group, and the weak acid group comprises at least one of phosphoric acid, citric acid, carbonic acid, acetic acid, barbituric acid, trihydroxymethyl aminomethane and phthalic acid. The invention also provides an electric device using the zinc ion battery.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and in particular relates to a zinc ion battery and an electrical device using the same. Background technique [0002] Compared with primary batteries, secondary batteries can be recycled repeatedly, effectively reducing the waste of resources and pollution to the environment. CN101540417A Chinese patent discloses a kind of zinc ion battery, and it uses MnO 2 As the positive electrode, the zinc sheet is used as the negative electrode, and the aqueous solution containing zinc ions is used as the electrolyte to form a rechargeable zinc-ion battery; the invention of this rechargeable zinc-ion battery is based on Zn 2+ Two behaviors of : Zn 2+ There are fast and reversible intercalation and deintercalation behaviors in manganese dioxide materials with large tunnels. On the other hand, Zn 2+ Can contain Zn 2+ Fast and reversible dissolution and deposition in neutral electrolytes such as zinc sulfat...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M10/38H01M4/02
CPCY02E60/10Y02P70/50
Inventor 康飞宇刘文宝徐成俊李佳
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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