Conductive carbon paste

The performance of conductive carbon paste depends largely on the performance and structure of the material. The zero-dimensional, one-dimensional, and two-dimensional structural characteristics of the material can form a point, line, or surface contact conductive network with the active material....

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The performance of conductive carbon paste depends largely on the performance and structure of the material. The zero-dimensional, one-dimensional, and two-dimensional structural characteristics of the material can form a point, line, or surface contact conductive network with the active material. Conductive additives can be divided into traditional conductive additives (such as conductive graphite, conductive carbon black, carbon fiber, etc.) and new conductive additives (such as carbon nanotubes, graphene, etc.). The earliest conductive carbon black and conductive graphite materials are point-like structures, also known as zero-dimensional conductive agents, which mainly improve conductivity through point contact between particles. The addition ratio in the positive electrode slurry is more than 3%; while carbon fiber is a seamless conical surface stacked by rolling graphite sheets, similar to the shape of herring bones. Due to low crystallinity and poor conductivity, all performances are inferior to carbon nanotubes, and it is no longer a research hotspot.

The performance of new conductive agent materials (such as carbon nanotubes and graphene) is better than that of traditional materials. They have low impedance and small conductivity threshold. The addition ratio in the positive electrode slurry only needs 0.5%~1.5%, which can significantly improve the battery capacity, rate, and cycle. Carbon nanotubes are seamless, hollow tubular materials formed by curling graphene sheets along the axis. Due to their linear structure, they can be interspersed between active substances, increase contact with electrode material particles, and act as physical binders while greatly improving conductivity. With the maturity of carbon nanotube preparation technology and processes, the trend of carbon nanotubes replacing traditional conductive agents has been established.

TANFENG Technology's Conductive carbon paste is at the industry leading level in terms of viscosity, carbon nanotube content, and conductive properties. The company has strong independent research and development capabilities and maintains its competitiveness through product iteration; in addition, the company actively explores the application of carbon nanotubes in other markets besides lithium batteries, such as conductive plastics and chips.

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