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Acetylene black, as a key industrial material, plays an important role in many fields, especially in electrochemical applications such as lithium thionyl chloride batteries. There is a close and subtle connection between its oil absorption value and electrical conductivity, which profoundly affects the performance of related products.

The oil absorption value, an important indicator for measuring the adsorption capacity of acetylene black, is usually expressed as the amount of a specific oil (such as linseed oil) absorbed by a unit mass of carbon black. The level of the oil absorption value essentially reflects the microstructural characteristics of acetylene black. Acetylene black with a high oil absorption value often possesses a more developed and complex microstructure, exhibiting abundant branches and pores, resembling a highly intricate three-dimensional network architecture. This unique structure provides unparalleled conditions for electron transport. In electrode material systems, when acetylene black is mixed with other active materials, the complex structure of high oil absorption value carbon black can act like a bridge, establishing more extensive and continuous connections between the active materials. Electrons encounter relatively less resistance when traversing through it, thus enabling efficient migration, greatly promoting the formation of conductive pathways, significantly improving the overall electrical conductivity of the material.

Conversely, acetylene black with a low oil absorption value is relatively simple and compact in structure. It has fewer branches and pores, and its microscopic morphology is more regular. Such a structure presents obvious disadvantages when constructing conductive pathways; the electron transport paths within it are not rich or continuous enough, easily being limited and obstructed by the structure itself, leading to frequent scattering phenomena during conduction, ultimately greatly reducing the overall electrical conductivity.

In practical application scenarios, such as the preparation of electrodes for lithium thionyl chloride batteries, precise control over the relationship between acetylene black's oil absorption value and electrical conductivity is crucial. By reasonably selecting and regulating the oil absorption value of acetylene black and optimizing its microstructure, an efficient conductive network can be established, reducing internal resistance loss in batteries, and enhancing battery charge-discharge efficiency and overall performance. Concurrently, in other fields where acetylene black is used as a conductive additive, such as conductive modification of rubber and plastics, a deep understanding of this relationship also helps in selectively choosing acetylene black products with appropriate oil absorption values based on specific needs, achieving optimized design of material conductive performance, meeting the stringent requirements for material electrical properties in various industrial application scenarios, and promoting technological development and product innovation in related industries.

For more information about our high-quality acetylene black, please contact Ningxia Yuandaxingbo Chemical Co., Ltd. You can send an email to zhiweichang810@gmail.com, and our professional team will be ready to answer your questions and help meet your application needs!