Dry-type chargeable vanadium cell manufacturing technique

A vanadium battery, dry-type technology, applied in the direction of battery electrodes, secondary batteries, circuits, etc., can solve the problems of affecting the service life of the battery, the number of charging and discharging cycles, etc., achieve good electrochemical reversibility, increase energy density, increase Effect of Cycle Number and Lifetime

Inactive Publication Date: 2008-06-04
BEIJING PRUDENT CENTURY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solid-state batteries have complex solid-state reactions and battery memory effects, resulting in fewer charge-discharge cycles and affecting battery life

Method used

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  • Dry-type chargeable vanadium cell manufacturing technique

Examples

Experimental program
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Embodiment Construction

[0006] 1. 26g of a mixture of 3-valent vanadium and 4-valent vanadium sulfate (wherein 3-valent vanadium and 4-valent vanadium sulfate each account for 50%), plus 0.3 grams of sulfuric acid, 0.6 grams of lithium sulfate, 2.5 grams of graphite Powder, 1.2 grams of polyvinyl alcohol, 6 grams of water, mixed evenly, divided into two parts evenly, filled the above mixture in the mold, inserted a carbon rod collector in the middle, and made positive and negative electrodes. Conductive separators use ultra-high molecular weight polyethylene microporous membranes to make battery tests. The constant voltage charging voltage is 1.95 volts, the charging capacity is 0.3Ah, the constant resistance discharge is 0.5 ohms, the average discharging voltage is 1.45 volts, and the discharging capacity is 0.26Ah.

[0007] 2. 26g of a mixture of 3-valent vanadium and 4-valent vanadium sulfate (wherein 3-valent vanadium and 4-valent vanadium sulfate each account for 50%), plus 6.5 grams of sulfuric...

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Abstract

The invention relates to a novel battery which adopts vanadic sulfate as active material for an anode and a cathode of the battery. The active material for the anode is paste solid material of mixture of sulfates with 5 valence vanadium and 4 valence vanadium respectively (among which the content of sulfates with 5 valence vanadium and 4 valence vanadium is 50 percent respectively. ), sulfate, lithium sulfate, graphite powder, polyviny1 alcohol and water mixed evenly by the proportion of 40 to 80 per cent: 1 to 10 per cent:1 to 10 per cent:5 to 20 per cent:1 to 5 per cent:5 to 15 per cent and filled solidly. The active material for the cathode is the paste solid material of mixture of sulfates with 3 valence vanadium and 2 valence vanadium respectively (among which the content of sulfates with 3 valence vanadium and 2 valence vanadium is 50 per cent respectively), sulfate, lithium sulfate, graphite powder, polyviny1 alcohol and water mixed evenly in the proportion of 40 to 80 per cent: 1 to 10 per cent:1 to 10 per cent:5 to 20 per cent:1 to 5 per cent:5 to 5 per cent and filled solidly. The battery provided by the invention is a rechargeable vanadium battery of dry type. The invention is characterized by good electrochemical reversibility and long cycle life due to adopting vanadium element of ionic status as the active material. The vanadic sulfate of the active material is made into paste solid, thus presenting the advantages of a dry battery.

Description

technical field [0001] The invention relates to a novel storage battery, in particular to a manufacturing technology of a dry-type rechargeable vanadium battery. Background technique [0002] Batteries are portable power sources that are widely used in all aspects of modern social life. Solid batteries include zinc-manganese dry batteries, nickel-metal hydride batteries, lithium batteries, etc. zinc-manganese dry batteries are disposable non-rechargeable batteries, nickel-hydrogen batteries and lithium batteries are storage batteries, and other liquid batteries include lead-acid batteries and all-vanadium ion flow batteries. Liquid batteries have comparative advantages in terms of storage capacity, and solid batteries have advantages in miniaturization and certain sports occasions and other application fields. Solid-state batteries have complex solid-state reactions and battery memory effects, resulting in fewer charge and discharge cycles and affecting battery life. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36H01M10/38H01M4/58
CPCY02E60/12Y02E60/10
Inventor 李林德俞振华吴正宇鲁湛
Owner BEIJING PRUDENT CENTURY TECH CO LTD
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