Article ID: 020201
The electronic resistance of composite electrodes for lithium-ion batteries has a non-negligible effect on the charge-discharge performance at high rates. To obtain an electrode with high-rate performance, it is important that the conductive materials, such as acetylene black, in the electrode-slurry form a good electron conduction network. In this study, we evaluated the electronic conduction network of various electrode-slurries made from different processes and with different solid content by the electronic conductivity measurements of the electrode-slurries. The electronic conductivity of the electrode-slurry showed a correlation with the rate performance. Depending on the production process and solid content, the electronic conductivity of the electrode-slurry decreased, suggesting that the electronic conduction network of the electrode-slurry was destroyed by collisions of acetylene black and active material particles during the kneading process and was disturbed by stirring the electrode-slurry with excess solvent during the dilution process. The electron conductivity measurement of electrode-slurry is expected to contribute to the condition determination of the electrode manufacturing process.
