Solvent-Free Processed Cathode Slurry with Carbon Nanotube Conductors for Li-Ion Batteries

• Published in: Nanomaterials (Basel, Switzerland) Vol. 13; no. 2; p. 324
• Main Authors: Park, Gyori, Kim, Hyun-Suk, Lee, Kyung Jin
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 12-01-2023; MDPI
• Subjects: Aluminum; Black carbon; Carbon; Carbon black; carbon nanotube; Carbon nanotubes; Cathodes; Computer storage devices; Conductors; dry process; Electrochemical analysis; Electrochemistry; Electrodes; Electronic devices; Electronic equipment; Energy storage; Fabrication; Hydraulics; Li ion battery; Lithium-ion batteries; Manufacturing; Manufacturing industry; Mechanical properties; Methods; Mortars (material); N-Methyl-2-pyrrolidone; Nanotechnology; Nanotubes; NCM811; Pollutants; Portable equipment; Rechargeable batteries; Scanning electron microscopy; Slurries; solvent free electrode; Solvents; Storage systems; Tetrafluoroethylene; South Korea; carbon nanotube; Li ion battery; solvent free electrode; NCM811; dry process
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano13020324

The increase in demand for energy storage devices, including portable electronic devices, electronic mobile devices, and energy storage systems, has led to substantial growth in the market for Li-ion batteries (LiB). However, the resulting environmental concerns from the waste of LiB and pollutants from the manufacturing process have attracted considerable attention. In particular, N-methylpyrrolidone, which is utilized during the manufacturing process for preparing cathode or anode slurries, is a toxic organic pollutant. Therefore, the dry-based process for electrodes is of special interest nowadays. Herein, we report the fabrication of a cathode by a mortar-based dry process using NCM811, a carbon conductor, and poly(tetrafluoroethylene)binder. The electrochemical performance of the cathode was compared in terms of the types of conductors: carbon nanotubes and carbon black. The electrodes with carbon nanotubes showed an ameliorated performance in terms of cycle testing, capacity retention, and mechanical properties.