Current collector of lead-acid storage battery

A lead-acid battery and current collector technology, applied in battery electrodes, electrode carriers/current collectors, circuits, etc., can solve problems such as restricting the performance of lead-acid batteries, being less than ideal, limiting the application level and development space of lead-acid batteries, etc. The effect of material with low apparent density, strong electrical conductivity and high mechanical strength
CN106876718AInactive Publication Date: 2017-06-20杨ζ˜₯ζ™“
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
杨ζ˜₯ζ™“
Publication Date
2017-06-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a current collector of a lead-acid storage battery. The current collector comprises a base body and a coating layer for coating the exterior of the base body; the material of the base body comprises one or more kinds of metal or metal alloy, carbon nanotubes and graphene, wherein the conductivity of the metal or metal alloy is higher than that of metallic titanium; and the material of the coating layer comprises one or more kinds of a non-metallic titanium compound, SnO<2> and a SnO<2> composite material. A composite material is adopted to form the current collector of the lead-acid storage battery disclosed by the invention; compared with the existing pure lead or lead alloy grid, the current collector has the advantages of low material apparent density, strong conductivity, high mechanical strength, corrosion resistance, high hydrogen evolution and oxygen evolution overpotential and the like; and in addition, the gravimetric specific energy, gravimetric specific power, cycle life, passivation resistance, electrolyte retention and the like of the lead-acid storage battery can be effectively improved.
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Description

technical field

[0001] The invention relates to the field of lead-acid batteries, in particular to a collector of lead-acid batteries. Background technique

[0002] Lead-acid battery current collectors, such as lead-acid battery grids, are used to distribute, collect, and transport the current inside the lead-acid battery, and also play a role in mechanically supporting and fixing the active material or lead paste of the lead-acid battery. At present, the current collectors of widely used lead-acid batteries are basically made of lead alloy or pure lead. Lead alloy or pure lead current collector has the advantages of easy processing, corrosion resistance, high oxidation potential resistance, high gas evolution overpotential, and compatibility with the electrochemical system of lead-acid batteries. However, it has the advantages of mechanical strength, corrosion resistance, and material specific gravity. , and even electrical conductivity are not ideal, which restricts the p...

Claims

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