Lead-acid flow battery

A liquid flow battery and lead-acid technology, applied in the direction of fuel cells, regenerative fuel cells, circuits, etc., can solve problems that have not been involved in the research and development of energy storage devices, and achieve the effects of reducing hydrogen evolution during charging, increasing electrode potential, and being easy to control

Pending Publication Date: 2021-02-23
JIANGSU AOXIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1970s, the United States first developed Fe 3+ / Fe 2+ and all vanadium (V 5+ / V 4+ , V 2+ / V 3+ ) liquid flow batteries are currently sold in state-owned markets in the United States, Japan, and Australia. At present, no Chinese company has entered the battery industry, and has not yet set foot in the research and development field of energy storage devices.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0023] 1. Substrate preparation:

[0024] Mix carbon powder and high-density polyethylene with a mass ratio of 6:1, and press it into a substrate.

[0025] 2. Positive plate preparation:

[0026] At a pressure of 8kg / cm 2 , at a temperature of 160 to 180°C, press-bond glassy carbon on the substrate, add 0.1% Bi 3+ and 0.5% Ni 2 or soluble salt as a catalyst to form the positive plate.

[0027] 3. Negative plate preparation:

[0028] At a pressure of 8kg / cm 2 , under the condition that the temperature is 160 to 180 DEG C, compound a nickel foam layer on the substrate, and add 0.2% sodium lignosulfonate to form a negative plate.

[0029] 3. Equipped with electrolyte:

[0030] 1.5mol / LPb(CH 3 SO 3 ) 2 and 0.9mol / LCH 3 SO 3 The electrolyte composed of H is fully mixed and then 10mmol / L of C is added 16 h 33 (CH 3 )N + Electrolyte additive.

[0031] 4. Battery charge and discharge current density control:

[0032] The electro-hydraulic flow rate of battery charge ...

Embodiment example 2

[0034] 1. Substrate preparation:

[0035] Mix carbon powder and high-density polyethylene with a mass ratio of 6:1, and press it into a substrate.

[0036] 2. Positive plate preparation:

[0037] At a pressure of 8kg / cm 2 , at a temperature of 160 to 180°C, press-bond glassy carbon on the substrate, add 0.2% Bi 3+ and 0.5% Ni 2 or soluble salt as a catalyst to form the positive plate.

[0038] 3. Negative plate preparation:

[0039] At a pressure of 8kg / cm 2 , under the condition that the temperature is 160 to 180 DEG C, compound a nickel foam layer on the substrate, and add 0.3% sodium lignosulfonate to form a negative plate.

[0040] 3. Equipped with electrolyte:

[0041] 0.5mol / LPb(CH 3 SO 3 ) 2 and 2.9mol / LCH 3 SO 3 The H composition electrolyte is thoroughly mixed.

[0042] 4. Battery charge and discharge current density control:

[0043] The electro-hydraulic flow rate of battery charge and discharge is controlled at 3mA / cm 2 , The charging and discharging...

Embodiment example 3

[0046] 1. Substrate preparation:

[0047] Mix carbon powder and high-density polyethylene with a mass ratio of 6:1, and press it into a substrate.

[0048] 2. Positive plate preparation:

[0049] At a pressure of 8kg / cm 2 , at a temperature of 160 to 180°C, press-bond glassy carbon on the substrate, add 0.2% Bi 3+ and 0.5% Ni 2 or soluble salt as a catalyst to form the positive plate.

[0050] 3. Negative plate preparation:

[0051] At a pressure of 8kg / cm 2 , under the condition that the temperature is 160 to 180 DEG C, compound a nickel foam layer on the substrate, and add 0.3% sodium lignosulfonate to form a negative plate.

[0052] 3. Equipped with electrolyte:

[0053] 0.1mol / LPb(CH 3 SO 3 ) 2 and 3.7mol / LCH 3 SO 3 The H composition electrolyte is thoroughly mixed. 4. Battery charge and discharge current density control:

[0054] The electro-hydraulic flow rate of battery charge and discharge is controlled at 1mA / cm 2 , The charging and discharging efficiency...

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PUM

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Abstract

The invention provides a lead-acid flow battery, and particularly relates to the field of storage batteries. A method comprises the steps: mixing and pressing activated carbon powder and high-densitypolyethylene into a substrate, pressing a glass-state carbon layer with a net-shaped structure on the substrate, and roughening the surface to form a positive plate; compounding a compact foamed nickel layer on a substrate to form a negative plate, wherein an electrolyte is composed of 0.1-1.5 mol / L of lead methanesulfonate and 0.9-3.7 mol / L of methanesulfonic acid. The lead-acid flow battery provided by the invention can overcome the defects of the existing redox flow battery.

Description

technical field [0001] The invention belongs to the field of accumulators, in particular to a lead-acid flow battery. Background technique [0002] Electrochemical flow cell (Electrochemical flow cell), commonly known as redox flow cell (Redox flow cell), is a large-scale energy storage device. The concept of redox flow battery was first proposed by Thaller. In the 1970s, the United States first developed Fe 3+ / Fe 2+ and all vanadium (V 5+ / V 4+ , V 2+ / V 3+ ) liquid flow batteries are currently sold in state-owned markets in the United States, Japan, and Australia. At present, no Chinese company has entered the battery industry, and has not yet set foot in the research and development field of energy storage devices. [0003] See attached figure 1 , the current typical structure of the redox flow battery, the active material of the flow battery is liquid, that is, it is used as the electrode reaction active material, and also serves as the electrolyte as the electr...

Claims

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Application Information

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IPC IPC(8): H01M8/18
CPCH01M8/188Y02E60/50
Inventor 戴德兵李中奇张文泉李忠明杨飞
Owner JIANGSU AOXIN TECH DEV
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