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An aqueous copper-ion battery suitable for large-scale energy storage applications

A copper ion, large-scale technology, applied in the field of electrochemical energy storage, can solve the problems of unrealized water-based copper-based secondary battery battery energy storage, no matching positive electrode material, etc., and achieve stable rate performance and cycle, good electrochemical performance. , the effect of avoiding dynamic problems

Active Publication Date: 2022-04-29
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Cu 2+ The carrier redox potential is high (0.153V vs. standard hydrogen electrode), and the hydrogen evolution reaction is not easy to occur in the aqueous electrolyte, but at the same time, it also faces the problem that there is no matching positive electrode material, and the aqueous copper-based secondary battery has not yet been realized. battery energy storage technology

Method used

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  • An aqueous copper-ion battery suitable for large-scale energy storage applications
  • An aqueous copper-ion battery suitable for large-scale energy storage applications
  • An aqueous copper-ion battery suitable for large-scale energy storage applications

Examples

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Embodiment 1

[0040] This embodiment is an aqueous copper ion battery suitable for large-scale energy storage applications, including a positive electrode, a negative electrode, a diaphragm for separating the positive and negative electrodes, and an aqueous solution containing copper ions.

[0041] 1、 The positive electrode consists of active material activated carbon (specific surface area: 950m 2 / G), conductive agent (acetylene black) and binder (polytetrafluoroethylene). The preparation method is prepared according to the following method:

[0042] Put the active material activated carbon, conductive agent acetylene black and binder polytetrafluoroethylene in the organic solvent N-methylpyrrolidone according to the mass ratio of 70:20:10, mix and disperse to form a slurry; Then press the slurry into a self-supporting film (film thickness 0.02-1mm), put the film in the oven and dry it at 80 ℃ for 12h. After drying, cut the film electrode into a circular positive plate with a diameter of 10mm...

Embodiment 2

[0048] This embodiment is an aqueous copper ion battery suitable for large-scale energy storage applications, including a positive electrode, a negative electrode, a diaphragm for separating the positive and negative electrodes, and an aqueous solution containing copper ions.

[0049] 1、 The positive electrode consists of active material activated carbon (specific surface area: 950m 2 / G), conductive agent (Kerqin black) and binder (polytetrafluoroethylene). The preparation method is prepared according to the following method:

[0050] Put the active material activated carbon, conductive agent corqin black and binder polytetrafluoroethylene in the organic solvent n, N-dimethylformamide according to the mass ratio of 80:10:10, mix and disperse to form a slurry, then "press the slurry into a self-supporting film (thickness: 0.02-1mm), put the film in an oven and dry it at 80 ℃ for 12h. After drying, cut the membrane electrode into a circular positive electrode with a diameter of 10m...

Embodiment 3

[0056]This embodiment is an aqueous copper ion battery suitable for large-scale energy storage applications, including a positive electrode, a negative electrode, a diaphragm for separating the positive and negative electrodes, and an aqueous solution containing copper ions.

[0057] 1、 The positive electrode consists of active material activated carbon (specific surface area: 950m 2 / G), conductive agent (super-p carbon black) and binder (polyvinylidene fluoride). The preparation method is prepared according to the following method:

[0058] Put the active material activated carbon, the conductive agent super-p carbon black and the binder polyvinylidene fluoride in the organic solvent n, N-Dimethylacetamide according to the mass ratio of 90:5:5, mix and disperse to form a slurry, then coat the slurry on the titanium mesh collector (the coated film thickness is 0.02-1mm), put the titanium mesh collector in the oven and dry it at 80 ℃ for 12h, and cut the electrode into a circular ...

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Abstract

The invention discloses a water-based copper ion battery suitable for large-scale energy storage applications, which uses an aqueous solution composed of choline chloride and copper chloride as an electrolyte, activated carbon as a positive electrode, and metal copper foil as a negative electrode. The positive and negative electrodes are separated by a diaphragm to form a battery. The positive and negative materials of the battery and the electrolyte are respectively low-cost carbon materials, metal copper foil and cheap metal chloride salts containing copper ions. The preparation process is simple, the preparation price is extremely low, and the cycle is short. The ion mobility is high, and it only involves the redox reaction of carrier metal copper ions, which avoids the kinetic problems caused by the charge shielding effect of metal ions in the process of intercalation and deintercalation in the material. The battery has high capacity, high energy density, and rate performance. Good and cycle stability, environment-friendly characteristics, with good electrochemical performance. The invention is suitable for preparing water system copper ion battery.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage and relates to an aqueous copper ion battery suitable for large-scale energy storage applications. Background technology [0002] With the increasing attention of the international community to issues such as ensuring energy security and addressing climate change, the development of renewable energy has become a universal consensus and concerted action of all countries in the world. However, renewable energy has the characteristics of volatility, randomness and intermittent. Large-scale grid connection will bring severe challenges to the safe and stable operation of power grid, and the development of large-scale energy storage technology is an effective solution. Battery energy storage technology is one of the key technologies supporting large-scale energy storage system. It plays an important role in the development of power system and energy reform. However, different from mobi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/36H01M10/38H01M4/583
CPCH01M10/36H01M10/38H01M4/583H01M2220/10H01M2300/0091H01M2300/0002H01M2004/021Y02P70/50Y02E60/10
Inventor 张璐段泽昂韩树民王文凤王雨
Owner YANSHAN UNIV