A kind of tubular nickel electrode for alkaline battery and preparation method thereof

An alkaline battery and nickel electrode technology, which is applied in the field of tubular nickel electrodes for alkaline batteries and their preparation, can solve the problems of small surface capacity of nickel electrodes, shedding of active materials, damage to electrode life, etc., and achieves the total battery capacity. Large, low cost, prolong the service life effect

Active Publication Date: 2015-10-07
ZHANGJIAGANG SMARTGRID FANGHUA ELECTRICAL ENERGY STORAGE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The current finished nickel electrodes have the following problems: (1) During the charge and discharge process, the volume of nickel oxyhydroxide / nickel hydroxide changes significantly (expansion, contraction), resulting in The active material falls off seriously, and the life of the electrode is damaged; (2) The surface capacity of the nickel electrode is small, which becomes the bottleneck restricting the total capacity and specific energy of the alkaline battery; (3) The process is complicated and the cost is high, especially for the sintered nickel electrode. More than half of the cost of a single battery has become the cost constraint factor of alkaline batteries and the specific energy constraint factor of alkaline batteries used for large-scale energy storage

Method used

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  • A kind of tubular nickel electrode for alkaline battery and preparation method thereof

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Embodiment 1

[0032] Such as figure 1 As shown, the tubular nickel electrode for alkaline battery of the present invention comprises 19 diameters of 4.5mm and a length of 70mm porous circular nickel foam strips as the conductive base core 2, which is connected to one end of the conductive base core 2 The collector electrode 1, the material of the collector electrode 1 is nickel-plated stainless steel, the conductive base core 2 is provided with the same number of conductive base cores with a length of 70 mm, an inner diameter of 5 mm, and a circular pipe 3 with a wall thickness of 0.5 mm. The row pipe 3 is braided by nylon silk and cured by a curing agent. The porosity of the row pipe 3 is 50%, and the braided aperture is 50 microns. One end of the row pipe 3 is closed by a polyethylene plastic button with an outer diameter of 5 mm. The other end is in contact with the collector electrode 1, and the contact part between the collector electrode 1 and the row pipe 3 is a low round platform...

Embodiment 2

[0035] A tubular nickel electrode for an alkaline battery, comprising 10 nickel-plated steel pipes with a length of 100 mm, an outer diameter of 4.5 mm, and a wall thickness of 0.5 mm as a conductive base core 2, and a collector electrode integrated with one end of the conductive base core 2 1. The collector 1 is a concave nickel-plated steel sheet with a length of 100 mm and a width of 20 mm. The conductive base core 2 is provided with the same number of conductive base cores with a length of 105 mm, an inner diameter of 5 mm, and a wall thickness of 0.4 mm. Shaped pipe 3, the pipe 3 is braided by polypropylene silk and solidified by a curing agent, the porosity of the pipe 3 is 55%, the diameter of the braided hole is 50 microns, and one end of the pipe 3 is made of polyethylene with an outer diameter of 5 mm. Alcohol plastic buckle bottom is closed, the offset part of the collector 1 and the row pipe 3 is a low round table with an outer diameter of 5mm to seal the row pipe...

Embodiment 3

[0038] A tubular nickel electrode for an alkaline battery, comprising 38 hollow square nickel-plated stainless steel posts with a length of 250 mm and a side length of 5.5 cm as a conductive base core 2, a collector electrode 1 welded to one end of the conductive base core 2, and The electrode 1 is made of nickel-plated stainless steel, and the conductive base core 2 is provided with the same number of circular tubes 3 with a length of 250 mm, an inner diameter of 6 mm, and a wall thickness of 0.5 mm. Vinylidene fluoride is braided and solidified by a curing agent. The porosity of the row pipe 3 is 55%, and the braided aperture is 45 microns. One end of the row pipe 3 is closed by a polyvinyl chloride plastic buckle bottom with an outer diameter of 6mm. The offset part between 1 and row pipe 3 is a low round platform with an outer diameter of 6mm to seal row pipe 3, and the gap between conductive base core 2 and row pipe 3 is filled with uniformly mixed nickel electrode slurr...

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Abstract

The invention relates to a tubular nickel electrode for alkaline batteries and a preparation method thereof. The tubular nickel electrode includes at least one conductive base core, a collector electrode connected to one end of the conductive base core, and a collector electrode sleeved on the conductive base core. The tubes outside the core, one end of the tubes is closed and the other end is offset against the collector, the number of conductive base cores is the same as that of the tubes, and active material is filled between the conductive base cores and the tubes. The pipe of the present invention is woven and solidified by textile materials with strong alkali resistance, which can give the active material an inward stress, offset the negative effect caused by the volume change of the active material, ensure that the active material does not fall off during the use of the electrode, and prolong the electrode life. electrode life.

Description

technical field [0001] The invention relates to an alkaline battery, in particular to a tubular nickel electrode for an alkaline battery and a preparation method thereof. Background technique [0002] In alkaline batteries, the active material nickel oxyhydroxide / nickel hydroxide is widely used in a variety of battery systems, such as nickel-hydrogen batteries, metal hydride nickel batteries, iron-nickel batteries, zinc-nickel batteries, etc. Nickel hydroxide includes two crystal forms of α and β, corresponding to the two crystal forms of β and γ of nickel oxyhydroxide, which is the reaction mechanism of proton diffusion, and the electrochemical reaction process is accompanied by volume change. [0003] Traditionally, there are three methods for the preparation of nickel electrodes: 1. Bag (box) electrode, the active material and the conductive material graphite are mixed and filled into the bag or packed in a nickel-plated perforated steel box, which is made after compactio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/32H01M4/30H01M4/26
CPCH01M4/24H01M4/26H01M4/30H01M4/32H01M4/765Y02E60/10
Inventor 程杰何柯徐艳文越华赵鹏程曹高萍杨裕生
Owner ZHANGJIAGANG SMARTGRID FANGHUA ELECTRICAL ENERGY STORAGE RES INST
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