Many people are unfamiliar with what SP conductive carbon black means, and some even think it is a type of conductive carbon black. So what does "SP" in SP conductive carbon black mean? In fact, the full name of SP conductive carbon black is Super P Liq, which is a type of conductive carbon black produced by a similar furnace black method. It is formed by the aggregation of primary particles with a diameter of about 40nm into primary aggregates of 150-200nm through subsequent processing such as soft agglomeration and artificial compression.
The molecular formula of SP conductive carbon black is C, and its molecular structure is similar to other carbon blacks, with C as the main component.
The characteristics of SP conductive carbon black are as follows:
The product has high purity, moderate specific surface area, and superior processing performance, which can be used in both positive and negative electrodes.
With a low addition amount, it has good synergy in the electrode, which can effectively improve the cycle capacity and cycle life of the battery.
SP conductive carbon black products have the characteristics of high specific surface area, high structure, high purity, and excellent conductivity.
SP conductive carbon black has no effect on the electrochemical mechanism.
sp conductive carbon black application
sp conductive carbon black belongs to small particle conductive carbon black, which is often used as a conductive agent. It is cheap and practical. It is mainly used in the electrodes of batteries, both positive and negative. High-efficiency superconducting carbon black for lithium batteries, branched chain, high purity, and particularly good electrical conductivity. The role of conductive carbon black sp in lithium batteries is to improve conductivity, and a low or very low addition of conductive carbon black sp can improve conductivity.
The role of conductive carbon black sp in lithium batteries
The role of conductive carbon black sp in lithium battery negative electrode
1. Conductive carbon black sp is used in a low or very low addition amount in the negative electrode of lithium batteries, which can improve the conductivity of lithium batteries.
2. Ensuring contact of the active oxide particles with the current collector and better contact of the internal particles.
3. Control the porosity of the negative electrode of the lithium battery and make the electrolyte ideally contact the oxide particles.
4. No effect on the electrochemical mechanism.
The role of conductive carbon black sp in the positive electrode of lithium batteries
1. Conductive carbon black sp is used in a low or very low addition amount in the positive electrode of lithium batteries to improve the conductivity of the positive electrode of lithium batteries.
2. Ensuring contact of the active oxide particles with the current collector and better contact of the internal particles.
3. Control the porosity of the positive electrode of the lithium battery and make the electrolyte ideally contact the oxide particles.
The difference between super P and acetylene black
Both super P and acetylene black are conductive carbon blacks, with a particle size of about 40 nanometers, 60 more than that of the second surface. Mesh, which forms a conductive network on the pole piece. The ash content and volatile matter (impurity) of Super P carbon black are less. In fact, the impact of the two additives on battery performance is not much different, but Super-p is more expensive, and acetylene is mostly used in laboratory and practical production. black.
Conductive Carbon Black sp and Ketjen Black Conductivity
Many friends like to compare conductive carbon black sp and ketjen black conductive carbon black, especially the conductivity of the two. In fact, both carbon blacks can be used in batteries, and they are both applied well, but Specifically, which conductive carbon black sp or Ketjen black conductive carbon black is better, you need to decide by yourself according to your own formula.