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

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

doi:10.51316/jca.2023.010

Authors

Huynh Le Thanh Nguyen University of Science, Viet Nam National University Ho Chi Minh City Author
Tran Thanh Nhut University of Science, Viet Nam National University Ho Chi Minh City Author
Ho Thi Thanh Nguyen University of Science, Viet Nam National University Ho Chi Minh City Author
Le Viet Hai University of Science, Viet Nam National University Ho Chi Minh City Author
Nguyen Thai Hoang University of Science, Viet Nam National University Ho Chi Minh City Author

DOI:

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

Keywords:

CDI, Activated carbon, composite AC/MCNTs electrode

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.

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