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Effect of carbon conductor dispersion and composition in dry cathode electrode on LiB performances

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2025, 35(2), pp.675~685
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : July 12, 2024
  • Accepted : September 8, 2024
  • Published : June 5, 2025

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ABSTRACT

As increasing markets for Lithium‒ion battery (LiB), several environmental issues have attained great attention. Especially, the organic solvent N‒Methyl‒2‒Pyrrolidone (NMP), commonly used in the traditional slurry casting process for fabricating LiB electrodes, will be about to be regulated due to its toxicity and the environmental concerns. Therefore, the production of LiB electrodes by a dry process without using NMP organic solvents is of special interest nowadays. In the dry process, it is generally accepted that 1‒dimensional carbon materials like carbon nanotubes (CNT) are beneficial than conventional carbon conductor such as carbon blacks (CB). However, CB is inevitably included during the CNT production, simultaneously as an impurity. Refining CNT from CNT/CB mixture can cause another cost obviously. On the other hand, there have been limited information to study dispersion of carbon materials in electrode with respect to dispersion method and types of carbon conductor. Here, we systematically test the effect of dispersibility of carbon conductor in electrode according to dispersion method and type of carbon conductors. In addition, effect of CB amount in carbon conductor are also elucidated on manufacturing procedure, properties of electrode and their electrochemical performances.

Citation status

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