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Aqueous zinc ion battery based on pyrene-4, 5, 9, 10-tetrone positive electrode and zinc negative electrode

A zinc ion battery, zinc ion technology, applied in battery electrodes, secondary batteries, circuits, etc.

Inactive Publication Date: 2018-01-09
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether this type of enolization reaction can be applied to the reversible storage of divalent Zn ions has not been reported yet.

Method used

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  • Aqueous zinc ion battery based on pyrene-4, 5, 9, 10-tetrone positive electrode and zinc negative electrode
  • Aqueous zinc ion battery based on pyrene-4, 5, 9, 10-tetrone positive electrode and zinc negative electrode
  • Aqueous zinc ion battery based on pyrene-4, 5, 9, 10-tetrone positive electrode and zinc negative electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: The positive electrode uses carbon nanotubes as the conductive agent. The preparation of the positive electrode film is as follows: mix according to the ratio of active material (pyrene-4,5,9,10-tetraketone): conductive agent (carbon nanotubes): binder (polytetrafluoroethylene) = 60:30:10 , roll the mixed slurry on a roller press to form a thin film with uniform thickness, cut it into a size of 1cm*1cm after drying, and the loading capacity of pyrene-4,5,9,10-tetraketone is 5 mg cm -2 , and then uniformly press the positive electrode film on the titanium mesh, and lead out with nickel wire to form the positive electrode. The negative electrode is made of zinc foil, cut into a size of 1 cm*1 cm, and drawn out with nickel wire to form the negative electrode. Electrolyte is 1 M Zn 2 SO 4 solution, assembled into an aqueous zinc-ion battery. The assembled aqueous Zn-ion battery was charged and discharged on the electrochemical workstation (PARSTAT). The char...

Embodiment 2

[0024] Embodiment 2: Active carbon is used as the conductive agent in the positive electrode. The preparation of the positive electrode film is as follows: mix according to the ratio of active material (pyrene-4,5,9,10-tetraketone): conductive agent (activated carbon): binder (polytetrafluoroethylene) = 60:30:10, The mixed slurry was rolled into a thin film with uniform thickness on a roller press, dried and cut into a size of 1 cm*1 cm, and the loading capacity of pyrene-4,5,9,10-tetraketone was 5 mg cm -2, and then uniformly press the positive electrode film on the titanium mesh, and lead out with nickel wire to form the positive electrode. The negative electrode is made of zinc foil, cut into a size of 1 cm*1 cm, and drawn out with nickel wire to form the negative electrode. Electrolyte is 1 M Zn 2 SO 4 solution, assembled into an aqueous zinc-ion battery. The assembled aqueous Zn-ion battery was charged and discharged on the electrochemical workstation (PARSTAT). The ...

Embodiment 3

[0025] Example 3: Ordered mesoporous carbon (CMK-3) was used as the conductive agent in the positive electrode. The preparation of the positive electrode film is as follows: mix according to the ratio of active material (pyrene-4,5,9,10-tetraketone): conductive agent (CMK-3): binder (polytetrafluoroethylene) = 60:30:10 , roll the mixed slurry on a roller press to form a thin film with uniform thickness, cut it into a size of 1cm*1cm after drying, and the loading capacity of pyrene-4,5,9,10-tetraketone is 5 mg cm -2 , and then uniformly press the positive electrode film on the titanium mesh, and lead out with nickel wire to form the positive electrode. The negative electrode is made of zinc foil, cut into a size of 1 cm*1 cm, and drawn out with nickel wire to form the negative electrode. Electrolyte is 1 M Zn 2 SO 4 solution, assembled into an aqueous zinc-ion battery. The assembled aqueous Zn-ion battery was charged and discharged on the electrochemical workstation (PARSTA...

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Abstract

The invention belongs to the electrochemical technical field, specifically an aqueous zinc ion battery based on a pyrene-4, 5, 9, 10-tetrone positive electrode and a zinc negative electrode. The battery system specifically comprises the pyrene-4, 5, 9, 10-tetrone positive electrode, the zinc negative electrode and a zinc ion-containing aqueous electrolyte. In discharging of the battery, the negative electrode zinc loses electrons to be changed into zinc ions, the zinc ions are dispersed to the positive electrode, and the pyrene-4, 5, 9, 10-tetrone in the positive electrode obtains electrons tobe subjected to an enolization reaction to store zinc ions, and the electrons flow from the negative electrode to the positive electrode through an external circuit; and in the charging process, thezinc ions are separated from the organic matter of the positive electrode to be diffused to the negative electrode to be deposited on the surface of the negative electrode, and the electrons flow fromthe positive electrode to the negative electrode through an external circuit. Damage to the electrode material structure caused by metal ion intercalation / deintercalation in the electrode material can be avoided, so that the cycle life of the battery is prolonged; and the battery has the characteristics of long cycle life, high energy density, high safety, greenness and environmental protection and the like, and has high application prospect in the large-scale energy storage field.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a high-safety and high-stability water-based rechargeable battery. Background technique [0002] With the depletion of fossil fuels such as coal and oil and the deterioration of the environment, the development of large-scale applications of renewable energy such as solar energy and wind energy has become a global trend. However, due to the inherent instability of renewable energy such as solar energy and wind energy, its effective utilization must rely on large-scale energy storage devices. As an efficient electrochemical energy storage device, rechargeable batteries have been widely used in electric vehicles, mobile phones and mobile communications. In recent years, the application of large-scale battery systems in large-scale energy storage has also attracted much attention. However, existing rechargeable battery systems often involve environmentally unfriendly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M4/38H01M10/36
CPCY02E60/10
Inventor 王永刚马元元夏永姚
Owner FUDAN UNIV
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