Battery plate and manufacturing method thereof
A technology for battery pole pieces and manufacturing methods, applied in the direction of electrode manufacturing, active material electrodes, etc., can solve problems such as poor cycle life, battery performance and capacity decay, and achieve the effect of prolonging service life and improving performance
Active Publication Date: 2013-12-11
SHENZHEN HIGHPOWER TECH CO LTD
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Problems solved by technology
[0002] The current battery pole pieces are easily corroded in a high-concentration alkaline solution system, which makes the performance and capacity of the battery rapidly decay during use, and the cycle life is poor
Method used
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Embodiment Construction
[0018] Please refer to figure 1 The battery pole piece 100 of this embodiment includes a base 1 , a powder layer 2 coated on the surface of the base 1 , and a glue layer 3 coated on the surface of the powder layer 2 .
[0019] The powder layer 2 includes mucus and particles distributed in the mucus. Generally, the particles are different due to different types of batteries, and the particles of the positive electrode sheet and the negative electrode sheet are also different. The battery pole piece 100 of this embodiment is mainly used in nickel-metal hydride batteries, the particles of the positive electrode of the nickel-hydrogen battery are spherical nickel, and the particles of the negative electrode are alloy powder.
[0020] The glue layer 3 contains HPMC (hydroxypropyl methylcellulose), and the concentration of HPMC is 0.5%-2.5%. The glue layer 3 has a thickness of 0.001-0.003 mm. The electrolyte solution of the Ni-MH battery is mostly hydroxide, which is alkaline, an...
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Abstract
The invention discloses a battery plate which comprises a substrate, a powder layer coated on the surface of the substrate and a liquid cement layer coated on the surface of the powder layer, wherein the liquid cement layer comprises hydroxypropyl methylcellulose. The invention also discloses a manufacturing method of the battery plate. The method comprises the following steps: providing the substrate and powder; coating the powder on the surface of the substrate to form the powder layer; preparing a liquid cement, wherein the liquid cement comprises hydroxypropyl methylcellulose; coating the liquid cement on the surface of the powder layer to form the liquid cement layer; and drying. The battery plate is provided with the liquid cement layer which comprises hydroxypropyl methylcellulose and is alkali-corrosion-resistant, thereby improving the performance of a battery and prolonging the service life of the battery.
Description
【Technical field】 [0001] The invention relates to a battery, in particular to a battery pole piece and a method for making the battery pole piece. 【Background technique】 [0002] The current battery pole pieces are easily corroded in a high-concentration alkaline solution system, which makes the performance and capacity of the battery rapidly decay during use, and the cycle life is poor. 【Content of invention】 [0003] In view of this, it is necessary to provide a corrosion-resistant battery pole piece and a manufacturing method thereof. [0004] A battery pole piece, characterized in that: the battery pole piece includes a base, a powder layer coated on the surface of the base, and a glue layer coated on the surface of the powder layer, the glue The layer comprises hydroxypropyl methylcellulose. [0005] In a preferred embodiment, the glue layer further includes styrene-butadiene rubber or polytetrafluoroethylene mixed with the hydroxypropyl methylcellulose. [0006] I...
Claims
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IPC IPC(8): H01M4/02H01M4/04
CPCY02E60/12Y02E60/10
Inventor 梁德声邹剑平张立天廖兴群蔡小娟孔令坤
Owner SHENZHEN HIGHPOWER TECH CO LTD