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

Inactive Publication Date: 2017-06-20
杨春晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 ma

Method used

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  • Current collector of lead-acid storage battery
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  • Current collector of lead-acid storage battery

Examples

Experimental program
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Example Embodiment

[0034] Example 1

[0035] The current collector of this embodiment is TiO 2 / Al composite material current collector, the structure of the current collector and the composite material are as figure 1 a and figure 2 Shown is a flat-plate grid structure, where the thickness of the positive grid is 2mm, and the thickness of the negative grid is 1.3mm; the material consists of an Al matrix and a coating layer TiO that wraps the Al matrix. 2 Composition where TiO 2 The thickness is 1nm.

[0036] The composite material current collector is applied to the positive and negative electrodes of lead-acid batteries. Compared with pure lead or lead alloy grids, the specific power of the applied lead-acid batteries can be increased by 20% to 61%, and the specific energy by weight can be increased by 23%. ~40%, the outgassing volume is reduced by 30%~52%.

Example Embodiment

[0037] Example 2

[0038] The current collector of this embodiment is ((TiO 2 -TiB 2 ) 99.9 -Sb 0.1 ) / Al composite material current collector, the structure of the current collector and the composite material are as figure 1 c and figure 2 Shown, it is a stretched grid structure, the thickness of the grid is 2mm, and the material consists of Al matrix and doped ((TiO 2 -TiB 2 ) 99.9 -Sb 0.1 ) Composition of coating material. Among them, ((TiO 2 -TiB 2 ) 99.9 -Sb 0.1 ) The coating material is composed of TiO mixed with atomic clusters doped with 0.1% by mole ratio of Sb. 2 -TiB 2 It is made of hybrid materials and its thickness is 600nm.

[0039] Applying the composite material current collector to the positive electrode of lead-acid battery, compared with pure lead or lead alloy grid, the weight ratio power of the applied lead-acid battery positive electrode can be increased by 37% to 82%, and the weight ratio energy can be increased by 27%. ~63%, the gas outgassing volume is redu...

Example Embodiment

[0040] Example 3

[0041] The current collector of this embodiment is ((Ti 3 N 4 -SnO 2 ) 99.9 Sb 0.1 ) / Al composite material current collector, the structure of the current collector and the composite material are as figure 1 d and figure 2 Shown, it is a winding type porous wall plate, the wall plate thickness is 1mm, the diameter of each circular hole is 4mm, and the hole center spacing is 6mm; its material is composed of Al matrix and ((Ti Ti 3 N 4 -SnO 2 ) 99.9 Sb 0.1 ) Coating layer, where the coating layer ((Ti 3 N 4 -SnO 2 ) 99.9 Sb 0.1 ) Material made of Ti 3 N 4 -SnO 2 The hybrid material at the cluster level is formed by doping with Sb at a molar ratio of 0.1%, and the thickness is 50 μm.

[0042] Applying the composite material current collector to the positive electrode of a wound lead-acid battery, compared with pure lead or lead alloy grid, the weight ratio power of the applied lead-acid battery positive electrode can be increased by 31% to 79%, and the weight ratio ...

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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.

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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Application Information

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IPC IPC(8): H01M4/68H01M4/66H01M4/70
CPCH01M4/662H01M4/663H01M4/666H01M4/667H01M4/68H01M4/70Y02E60/10
Inventor 杨春晓
Owner 杨春晓
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