Semi-solid-state zinc nickel flow cell

A zinc-nickel liquid and flow battery technology, which is applied in fuel cells, indirect fuel cells, fuel cell grouping, etc., can solve the problems that battery power and capacity cannot be independently designed, and the energy storage capacity of zinc-nickel liquid flow batteries is low.

Inactive Publication Date: 2014-06-04
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

[0005] This patent proposes the concept of semi-solid zinc-nickel flow battery in order to solve the problem of low energy s

Method used

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Embodiment 1

[0035] Electrolyte preparation

[0036] Positive electrode electrolyte: Weigh 1.5g of nickel hydroxide powder with a particle size of 50nm and 1.5g of acetylene black, grind them in a mortar for 30 minutes, then transfer the above mixed solids to a beaker, add 1.5g of beta naphthalenesulfonate sodium formaldehyde to condense The solution of compound and 56g potassium hydroxide was settled to 100mL, stirred at room temperature for 4 hours, and ultrasonicated for 2 hours to obtain a suspension containing 15g / L of active material nickel hydroxide.

[0037] Negative electrode electrolyte: Weigh 3.26g of zinc oxide and dissolve it in 100mL of potassium hydroxide solution with a concentration of 10mol / L.

[0038] Battery Assembly:

[0039] The single cell adopts 3x3cm positive terminal plate 1 and positive electrode 3 in turn 2 Porous carbon foam, microporous diaphragm 5, negative electrode 4 adopts 3x3cm 2 Pre-galvanized nickel foam, negative and positive terminal plates 2, sing...

Embodiment 2

[0044] Electrolyte preparation

[0045] Positive electrode electrolyte: Weigh 2g of nickel oxide powder with a particle size of 80nm and 1.5g of acetylene black, grind them in a mortar for 30 minutes, then transfer the above mixed solids to a beaker, add 1g of sodium hexametaphosphate, 1g of dodecane Sodium sulfonate and 40 g of sodium hydroxide solution were adjusted to 100 mL, stirred at room temperature for 6 hours, and ultrasonicated for 3 hours to obtain a suspension containing 20 g / L of active material nickel oxide.

[0046] Negative electrode electrolyte: weigh 3.26g of zinc oxide and dissolve it in 100mL of sodium hydroxide solution with a concentration of 10mol / L.

[0047] Battery Assembly:

[0048] The single cell adopts 3x3cm positive terminal plate 1 and positive electrode 3 in turn2 Porous foam nickel ion exchange membrane Nafion117 (5) negative electrode 4 adopts 3x3cm 2 Nickel sheet pre-plated with lead, negative terminal plate 2, single cell structure and sys...

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Abstract

The invention provides a semi-solid-state zinc nickel flow cell. A single cell is composed of positive and negative electrode end plates, a positive electrode, a negative electrode, a diaphragm, fluid storage tanks, a pipeline and a pump, wherein the positive electrode is a porous electrode, the negative electrode is a deposition type electrode, an active material-nickelous hydroxide in the positive electrode is suspended and dispersed in a positive electrode electrolyte, and a negative electrode electrolyte is a high-consistency alkaline zincate solution. In the charging process, the electrolytes are respectively conveyed to the positive electrode and the negative electrode from the fluid storage tanks by the pump, and the active material-nickelous hydroxide in the positive electrode electrolyte is oxidized into nickel oxide hydroxide; zinc ions in the negative electrode electrolyte is directly deposited in the negative electrode in a zinc elementary substance form. In the discharging process, the nickel oxide hydroxide in the positive electrode fluid storage tank is reduced to nickel hydroxide; a zinc elementary substance is oxidized to zinc ions which return to the negative electrode fluid storage tank by the pump. According to the semi-solid-state zinc nickel flow cell disclosed by the invention, a solid active material-nickel hydroxide involving in the reaction with the positive electrode is stored in the corresponding electrolyte, so that the power and energy can be singly designed, and the cell has the characteristics of high energy storage capacity, high safety, long circulation service life, low cost and simple structure and manufacturing process.

Description

technical field [0001] The invention relates to a zinc-nickel flow battery, in particular to a semi-solid zinc-nickel flow battery system. technical background [0002] In recent years, with the change of global energy and climate, the efficient use of clean energy has been put on the agenda, but the development and utilization of new energy is facing a common problem is the smooth and stable output of power, so it is equipped with corresponding large-scale energy storage equipment is very necessary. [0003] Flow batteries have rapidly become a research hotspot in energy storage technology due to their high energy storage capacity, high charge and discharge efficiency, safety and reliability, long operating cycle life, and environmental friendliness. Since Thaller proposed the concept of flow battery in 1974, the more mature systems include: zinc-bromine system, sodium polysulfide / bromine system and all-vanadium system. However, the above-mentioned flow batteries have pro...

Claims

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Application Information

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IPC IPC(8): H01M8/20H01M8/24
CPCY02E60/528H01M8/188H01M2300/0014Y02E60/50Y02P70/50
Inventor 张华民程元徽赖勤志
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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