Content and mechanism of graphite in electrode paste

As an indispensable industrial raw material in human society, electrode paste plays a pivotal role in many fields, such as metallurgy, chemical industry, electronics and other industries. Among them, as a key conductive material, the content and mechanism of graphite in the electrode paste have attracted extensive attention. In this paper, the content of graphite in electrode paste and its conductive mechanism will be discussed in order to provide reference for researchers in related fields.

First, the content of graphite in electrode paste:
Graphite is a natural carbon material with good electrical conductivity, thermal stability and chemical stability. In the electrode paste, the content of graphite is usually controlled within a certain range to ensure the comprehensive performance of the electrode paste. In general, the content of graphite in the electrode paste is about 5% to 20%, and the specific proportion needs to be adjusted according to different application needs and process conditions.

Second, the mechanism of graphite in the electrode paste:
1. Conductive mechanism: Graphite as an excellent conductive material, its conductive mechanism is mainly reflected in the electron transport process. There are a large number of free electrons between the graphite layers, and these electrons can move freely between the graphite layers to form a highly delocalized electronic system. When graphite is added to the electrode paste, the free electrons between the graphite layers can interact with other ions in the electrode paste, thus improving the conductivity of the electrode paste.

2. Thermal stability and chemical stability: The thermal stability and chemical stability of graphite make it have a wide range of application values in electrode pastes. In high temperature environment, graphite can withstand higher temperature, which is conducive to improving the service life of electrode paste. In addition, graphite has good compatibility with other components in the electrode paste, which can slow down the aging process of the electrode paste.

3. Improve processing performance: The addition of graphite can improve the processing performance of the electrode paste, such as reducing viscosity and improving plasticity. This is beneficial to improve the forming effect and product quality of electrode paste.

The content and action mechanism of graphite in the electrode paste is one of the key factors affecting the performance of the electrode paste. By reasonably controlling the content of graphite, the advantages of conductivity, thermal stability and chemical stability can be fully utilized, so as to improve the overall performance of the electrode paste.