Fabrication of composited electrode based on coconut activated carbon and MCNTs for ionic electrosorption

Nguyen Thanh Le Huynh, Nhut Tran Thanh, Nguyen Thanh Thi Ho, Hai Le Viet, Hoang Nguyen Thai

Abstract


Activated carbon (AC) derived from coconut shells (Tra Bac Company, Vietnam) is a promising candidate material for the capacitance deionization (CDI) technology due to their low-cost, abundance and its high surface area. In our work, the composites AC/MCNTs electrodes were prepared using the polyvinyl alcohol (PVA) and glutaric anhydride (GA) as cross-linking binder. The morphological properties were investigated by scanning electron microscopy (SEM). The electrochemical properties were performed by electrochemical measurements such as: cyclic voltammetry (CV), cyclic charge – discharge (CDC). The composite electrode with 1% CNTs (wt.) showed encouragingly a specific capacitance of 94.0 F/g and a salt absorption capacity of 11.2 mg/g with stable performance.

Keywords


CDI; Activated carbon; composite AC/MCNTs electrode

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References


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DOI: https://doi.org/10.51316/jca.2023.010

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