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Collector plate for all-vanadium redox flow battery

A flow battery, vanadium oxidation technology, applied in fuel cells, battery electrodes, circuits, etc., can solve problems such as the inability to meet the high efficiency of vanadium batteries, and achieve excellent corrosion resistance, strong tensile and strain resistance, and excellent mechanical properties. Effect

Inactive Publication Date: 2010-06-16
XIANGFAN DALI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the conductive plastic current collector cannot meet the requirements of high efficiency, high power and long life of vanadium batteries

Method used

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  • Collector plate for all-vanadium redox flow battery
  • Collector plate for all-vanadium redox flow battery
  • Collector plate for all-vanadium redox flow battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A current collecting plate made of a composite of single-layer carbon fiber cloth and conductive plastic (4). See figure 1 with figure 2 , the width of the longitudinal carbon fiber bundle (1) and the weft carbon fiber bundle (2) of the carbon fiber cloth used are both 2.8mm, and the thickness is 0.25mm; the warp direction carbon fiber bundle (1) and the weft direction carbon fiber bundle (2) The tensile strength is ≥ 2.5Gpa, and the tensile modulus is ≥ 220Gpa; the area of ​​the uniformly distributed holes (3) of the carbon fiber cloth is 0.25mm 2 . The volume resistivity of the conductive plastic (4) adopted is 2×10 -1 Ω·cm. The thickness (5) of the layer of conductive plastic (4) on both sides of the collector plate is 0.1mm. The volume resistivity of the plane vertical direction of the carbon fiber cloth and the conductive plastic (4) composite current collector made under the above-mentioned conditions is 6 × 10 -2 -7×10 -2 Ω·cm. The tensile strength in th...

Embodiment 2

[0027] A current collecting plate made of a composite of single-layer carbon fiber cloth and conductive plastic (4). See figure 1 with figure 2 , the width of the longitudinal carbon fiber bundle (1) and the weft carbon fiber bundle (2) of the carbon fiber cloth used are both 2.8mm, and the thickness is 0.25mm; the warp direction carbon fiber bundle (1) and the weft direction carbon fiber bundle (2) The tensile strength is ≥ 2.5Gpa, and the tensile modulus is ≥ 220Gpa; the area of ​​the uniformly distributed holes in the carbon fiber cloth is 0.25mm 2 . The volume resistivity of the conductive plastic (4) adopted is 1×10 -1 Ω·cm. The thickness (5) of the layer of conductive plastic (4) on both sides of the collector plate is 0.1mm. The carbon fiber cloth and the conductive plastic (4) composite current collecting plate prepared under the above-mentioned conditions have a volume resistivity of 3 × 10 in the vertical direction of the plane. -2 -4×10 -2 Ω·cm. The tensile...

Embodiment 3

[0029] A current collecting plate made of double-layer carbon fiber cloth and conductive plastic (4). See figure 1 with image 3 , the width of the carbon fiber bundles (1) and the weft carbon fiber bundles (2) of the carbon fiber cloth used is 2.8mm, and the thickness is 0.25mm; Tensile strength ≥ 2.5Gpa, and its tensile modulus ≥ 220Gpa; the area of ​​carbon fiber cloth uniformly distributed holes (3) is 0.25mm 2 . The volume resistivity of the conductive plastic (4) adopted is 2×10 -1 Ω·cm. The thickness (5) of the conductive plastic (4) layer on both sides of the current collector plate is 0.1mm; the thickness (6) of the conductive plastic (4) layer between the two layers of carbon fiber cloth is 0.2mm. The carbon fiber cloth and the conductive plastic (4) composite current collector made under the above conditions have a resistivity of 6 × 10 in the vertical direction of the plane. -2 -7×10 -2 Ω·cm. The tensile strength in the plane direction is ≥0.8Gpa. The tens...

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Abstract

The invention relates to a collector plate for an all-vanadium redox flow battery, belonging to the technical field of flow battery collector plate manufacture. The collector plate is characterized by being compounded from carbon fiber cloth and conductive plastic (4), wherein warp-wise carbon fiber bundles (1) and weft-wise carbon fiber bundles (2) of the adopted carbon fiber cloth have volume resistivity not more than 2*10-3 ohm.cm, tensile strength not less then 2.5 Gpa and tensile modulus not less than 220 Gpa; the carbon fiber cloth is provided with uniform distribution holes (3); the volume resistivity of the adopted conductive plastic (4) is not more than 5*10-1 ohm.cm; and the carbon fiber cloth can be divided into 1 to 3 layers. The invention can realize large-area and large-scale production; in addition, the manufactured collector plate has good conductive property, mechanical property and corrosion resisting property and overcomes the defects of poor conductive property and low mechanical strength of a collector plate used for the traditional flow battery.

Description

technical field [0001] The invention belongs to the technical field of manufacturing a collector plate for an all-vanadium redox flow battery. Background technique [0002] The massive development and utilization of solar energy and wind energy is the only way for energy development, and these energy sources have unstable characteristics. When using these energy sources to generate electricity, they need to be equipped with corresponding electric energy storage devices. All-vanadium redox flow batteries have the preferred superior conditions. However, if vanadium batteries are to be widely used in wind and solar power generation systems as energy storage devices, or to be used in peak shaving of power grids, large-scale production must be achieved, and the power of a single battery must be large. A single vanadium battery The power must reach hundreds of kilowatts or even megawatts. Otherwise, in large-scale wind and solar power generation systems, a large number of vanadium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86
CPCH01M4/8615Y02E60/528Y02E60/50H01M8/188Y02P70/50
Inventor 綦明刚
Owner XIANGFAN DALI ELECTRICAL
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