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A zinc-nickel flow battery structure and a zinc-nickel flow battery system

A technology for flow batteries and batteries, applied in fuel cells, fuel cell additives, regenerative fuel cells, etc., can solve the problems of complex structure and low battery operating current density, and achieve the goal of increasing operating current density, improving material transfer, simplifying Effects of battery system structure

Active Publication Date: 2017-03-15
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still complex structures, and the battery operating current density is low at 10-20mA / cm 2 The problem with the same type of all-vanadium redox flow battery 80mA / cm 2 far from

Method used

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  • A zinc-nickel flow battery structure and a zinc-nickel flow battery system
  • A zinc-nickel flow battery structure and a zinc-nickel flow battery system
  • A zinc-nickel flow battery structure and a zinc-nickel flow battery system

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Experimental program
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Effect test

Embodiment 1

[0022] The battery structure and system consist of figure 1 As shown, it is composed of negative terminal plate, negative electrode, positive electrode flow field plate, positive electrode, positive electrode current collector, and positive terminal plate in turn; the battery system is composed of batteries, circulation pumps and pipelines, and the electrolyte is filled in the flow channels in the battery. The inlet and outlet of the electrolyte are connected through a pipeline through a circulation pump. When the battery is charged and discharged, the electrolyte is self-circulated inside the single cell or battery module through the pipeline under the action of the circulation pump.

[0023] The effective area of ​​the positive and negative electrodes is 10*10cm; the material of the positive electrode current collector is graphite, and the positive electrode collector of the battery is equipped with a serpentine flow field with a flow channel depth of 0.4cm; the material of t...

Embodiment 2

[0025] The battery structure and system consist of figure 2 As shown, the battery is composed of negative terminal plate, negative electrode, positive electrode flow field plate, positive electrode, positive electrode current collector, and positive terminal plate in sequence; the battery system is composed of battery, liquid storage tank, circulation pump and pipeline, and the liquid storage tank is filled with Electrolyte, the liquid storage tank is connected to the electrolyte inlet and outlet of the battery through pipelines, and a circulation pump is installed on the liquid storage tank and the electrolyte inlet or outlet pipeline of the battery; when the battery is charged and discharged, the electrolyte is circulated through the circulation pump Circulation between single cells or battery modules and liquid storage tanks.

[0026] The effective area of ​​the positive and negative electrodes is 10*10cm; the material of the positive electrode collector is graphite, and t...

Embodiment 3

[0028] The battery structure and system consist of image 3 As shown, the battery is composed of negative terminal plate, negative electrode, positive flow field plate 1, positive electrode, positive flow field plate 2, positive current collector, and positive terminal plate; In the flow channel in the battery, the electrolyte inlet and outlet of the battery are connected through a pipeline through a circulation pump. When the battery is charged and discharged, the electrolyte is self-circulated inside the single cell or battery module through the pipeline under the action of the circulation pump.

[0029] The effective area of ​​the positive and negative electrodes is 10*10cm; the material of the positive electrode current collector is graphite, and the positive electrode collector of the battery is equipped with a serpentine flow field with a depth of 0.8cm; the material of the positive electrode flow field plate is PC, the thickness is 0.3cm, and the flow path is serpentine ...

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Abstract

The invention relates to a zinc-nickel flow battery structure and a battery system containing it. The battery is composed of a single battery or a battery module composed of two or more single batteries, and positive and negative terminal plates on both sides of the battery. The positive electrode current collector, the positive electrode, the positive electrode flow field plate, and the negative electrode are sequentially included. The battery system is composed of a battery, a circulation pump and a pipeline. The electrolyte is filled in the flow channel in the battery. The inlet and outlet of the battery electrolyte are connected through the pipeline through the circulation pump. When the battery is charged and discharged, the electrolyte is in the circulation pump. Under the action of the pipeline, self-circulation is carried out inside the single battery or battery module. The battery has a double-sided flow field structure on both sides of the positive electrode, and adopts the design of built-in electrolyte circulation, abandoning the external electrolyte storage tank. It has the advantages of simple structure, high energy density, high power density, and simple processing and manufacturing processes.

Description

technical field [0001] The invention relates to a zinc-nickel single liquid flow structure and a zinc-nickel liquid flow battery system. [0002] technical background [0003] Zinc-nickel flow energy storage battery is a new type of low-cost, high-efficiency, and environment-friendly flow energy storage battery. It has the advantages of high energy density and current efficiency, simple and easy operation of the device, long service life, and low cost. It is mainly used in power grid peak shaving, renewable energy power generation such as wind energy and solar energy, electric vehicles and other fields. The electrolyte of the zinc-nickel flow energy storage battery is a flowing zincate alkaline solution. The battery does not use an ion exchange membrane, and the current loop is formed by the free flow of ions in the battery cavity and the directional movement of the external circuit electrons. However, there are still complex structures, and the battery operating current den...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04276H01M8/18
CPCH01M8/0258H01M8/04201H01M8/04276H01M8/04283H01M8/188Y02E60/50
Inventor 赖勤志张华民程元徽
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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