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How is Carboxymethyl Cellulose used in lithium battery production?

Jan. 04, 2020

Carboxymethyl Cellulose, as a stabilizer and binder, can be used to make electrode materials, which can avoid the use of NMP, reduce costs and reduce environmental pollution; it can also increase battery capacity and extend cycle life.

Carboxymethyl Cellulose

Carboxymethyl Cellulose

Thermal stability of CMC Chemical

When the temperature reaches 300 degrees, CMC-lithium decomposes rapidly, and the mass is reduced by 70%. At 400 degrees, the mass is reduced by another 10%. CMC-lithium is easily decomposed at the end of battery life.

Electrochemical properties of CMC

As a binder, CMC materials can be used in different types of electrode materials such as natural graphite, mesocarbon microspheres (MCMB), lithium titanate, tin-based silicon-based anode materials, and lithium iron phosphate anode materials. Cycle stability and cycle life have been improved compared to when using PYDF. Because CMC has better thermal stability, electrical conductivity, and electrochemical characteristics.

There are two main mechanisms by which CMC improves the performance of lithium-ion batteries:

1) The bonding performance of CMC is stable;

2) CMC has good electronic and ionic conductivity and can promote lithium transfer

Sodium carboxymethylcellulose CMC is used in phosphorus-free laundry products

As an excellent detergent-grade suspension and dispersant, sodium carboxymethylcellulose CMC can be widely used in non-phosphorus detergents, detergents, detergents, soaps and other fields. Because of its excellent anti-redeposition properties, CMC is widely used as a washing aid.

The specific principle is that the detergent or soap added with CMC can make the dirt entering the aqueous solution dispersed and suspended so that it can prevent the dirt from settling on the clothes, and the strong decontamination ability can effectively reduce the washing time. It can better maintain the cleanliness of clothes, and at the same time can effectively maintain the color of clothes. Washed clothes will be softer and more comfortable. The effect is more pronounced in hard water using CMC-added detergents.

Sodium carboxymethyl cellulose (CMC) for ceramic glaze is a white or light yellow powder, granular or fibrous solid, odorless, non-toxic and water-soluble. CMC was selected as the electrolyte in the production of sanitary ceramics, because it has good adhesion, suspension, deaggregation and water retention effects, and can be widely used in ceramic glaze applications.

In the actual production process of ceramic glazing (wall tiles, tiles, etc.), glazed pinholes often occur, similar to small holes with needle-like shapes, called pinholes. There are many reasons for this. For example, the frit is not fully melted, the difference between the melting temperature of the glaze and the high temperature is too large, and the temperature of the green body is too high when the glaze is applied, causing the green body to be too dry, which makes the glaze penetrate the green body. Too fast and so on.

There are many common solutions, such as appropriately increasing the melting temperature of the glaze, reducing the high temperature viscosity, improving the quality of the frit, appropriately reducing the firing temperature or increasing the maturation temperature range of the glaze, etc., but the best way is to improve the water retention. To prevent over-drying and lack of water, it is necessary to add raw materials with good water retention. Sodium carboxymethyl cellulose CMC is a raw material with good water retention, which can provide good adhesion. We are CMC Powder Supplier, welcome to consult.

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