Papers by Keyword: Electrochemical Energy Storage Devices

Abstract: This work presents the preparation of mechanically exfoliated graphene-CMC biocomposite ink which was utilized in the printing process of SC individual electrodes via InkJet printing (IJP) technique. Three individual electrodes were fabricated using such technique with high abilities to control the geometry and tuning both resulting sheet resistance and thickness. The printer showed a good command of printing computer-aided designs with high resolution and fabricated well-homogenised patterns. The electrochemical behaviour of the fabricated electrodes was investigated in 0.1M NaOH. Results illustrate that electrodes have shown good capacitive behaviour and EDLC was the main energy storage mechanism. There was a direct relationship between the number of the printed layers and the resulting electrical parameters. A maximum areal capacitance of 16.58 mF/cm² was achieved with printing 80 layers. Such results indicate that the formulated ink would be potential for electrochemical energy storage applications.

Abstract: High voltage electrophoretic deposition (HVEPD) has been used to obtain forests of aligned multi-walled carbon nanotubes (MWCNTs) on long strips of flexible, conductive substrates. Successful design and integration of a continuous HVEPD setup has enabled scalable fabrication of electrodes for electrochemical energy storage. The mechanism of continuous HVEPD has been investigated to ensure appropriate alignment. Well-aligned forests of MWCNTs were obtained using a conductive holding layer which helped reduce internal resistance and enhance the electrochemical performance of the electrodes.