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Zinc ion single-fluid battery

A zinc ion, flow battery technology, applied in fuel cells, secondary batteries, circuits, etc., can solve the problem of zinc anode dendrites, which has not been fundamentally improved, and restricts the high-efficiency and long-life operation of batteries.

Active Publication Date: 2014-02-12
华秦储能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned patents have improved the performance of the battery through the improvement of the positive electrode material and electrolyte, the dendrite problem of the zinc negative electrode has not been fundamentally improved, which restricts the high-efficiency and long-life operation of the battery

Method used

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  • Zinc ion single-fluid battery
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  • Zinc ion single-fluid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of positive electrode materials: (taking Mn oxide as an example)

[0021] Prepare 1L of 0.05mol / L MnSO 4 , 0.05mol / L ZnSO 4 and 0.05mol / L K 2 S 2 o 2 Mix the solution, add 5 mL of 98% (w) concentrated H 2 SO 4 , A colorless and clear mixed solution was obtained after thorough stirring with a glass rod. The resulting colorless solution was reacted at a constant temperature in a water bath at 40° C. for 36 h. After the reaction was completed, the black precipitate was collected by suction filtration, washed repeatedly with deionized water until the solution was neutral, and dried under vacuum in an oven at 100°C for 12 hours to obtain the positive electrode material.

[0022] Preparation of positive electrode:

[0023] The prepared cathode material was mixed with acetylene black and PTFE (5% (w)) at a mass ratio of 75:15:10, and thoroughly ground with an agate mortar. Add an appropriate amount of ethanol, scrape evenly on 3x3cm with a blade 2 On the ...

Embodiment 2

[0030] Preparation of cathode materials: (taking Ni, Mn mixed oxide as an example)

[0031] Put nickel acetate, manganese sulfate, potassium permanganate, and zinc sulfate with a molar ratio of 3:3:6:1 in an agate mortar and grind for about 0.5 hours. When the color of the system is no longer deepened, transfer the solid mixture to Put it into a small beaker, heat it in a water bath at (80±5)°C for about 10 hours, grind it finely, calcinate it in a muffle furnace at 300°C for 3 hours, and then grind it finely.

[0032] Preparation of positive electrode:

[0033] The prepared cathode material was mixed with acetylene black and PTFE (5% (w)) at a mass ratio of 75:15:10, and thoroughly ground with an agate mortar. Add an appropriate amount of ethanol, scrape evenly on 3x3cm with a blade 2 On the nickel foam, put it in a vacuum oven at 120°C to dry to constant weight, press it into thin sheets under a pressure of 10MPa, and the positive active material load is 10mg / cm 2 .

[0...

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Abstract

The invention relates to a zinc ion single-fluid battery. The zinc ion single-fluid battery comprises a cell module obtained by in-series connection of one or more single cells, an electrolyte storage tank, a circulation pump and a circulation pipe. The single cell comprises an anode and a cathode, the anode comprises a matrix and an anode material on the matrix, the cathode is a sedimentary-type electrode, and an electrolyte is a zinc ion-containing salt solution. Through use of a zinc ion insertion-deinsertion reaction in an anode reaction, the zinc ion single-fluid battery has the characteristics of high safety, high energy density, long cycle life, low cost, simple structure and simple preparation processes.

Description

technical field [0001] The invention relates to the field of a single flow battery, in particular to a zinc ion single flow battery. technical background [0002] In recent years, with economic development and environmental pressure, the development of secondary batteries is in the ascendant. Among traditional secondary batteries, lithium-ion batteries have higher performance. Lithium-ion batteries use Li + As an energy storage medium to store electrical energy, Li + The embedding and depletion of the battery realizes the charge and discharge cycle of the battery. However, because lithium is more active, the safety of lithium-ion batteries is poor. [0003] Combining lithium-ion batteries with traditional zinc-manganese dry batteries, Chinese patents such as CN101540417A disclose for the first time a rechargeable zinc-ion battery with manganese dioxide as the complete machine, zinc as the negative electrode, and a solution containing zinc ions as the electrolyte. When th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36H01M4/02
CPCH01M8/188Y02E60/50
Inventor 张华民赖勤志程元徽
Owner 华秦储能技术有限公司