Gas Diffusion Layer from Binchotan Carbon and Its Electrochemical Properties for Supporting Electrocatalyst in Fuelcell. Correspondence

Nirwan Syarif, - and Dedi Rohendi, - and Ade Dwi Nanda, - and M Try Sandi, - and Delima Sukma Wati, Br Sihombing (2023) Gas Diffusion Layer from Binchotan Carbon and Its Electrochemical Properties for Supporting Electrocatalyst in Fuelcell. Correspondence. -.

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Abstract

Gas diffusion layer (GDL) in fuelcell has been made from carbon dots ink electrochemically deposited from binchotan. The layer was prepared by spraying the ink on top of conductive paper. Cyclic voltammetry and impedance spectroscopy tests were applied to study GDL electrochemical characters. Buble drop tests were used to obtain contact angles representing hydrophobicity of the layer. The electrodeposition/oxidation of binchotan derived carbon dispersion has crystalline phase in its dot structure. Carbon dots has average particle size diameter 176.7 nm and polydispersty index 0.138 according to particle size analysis. The Nyquist plot revealed that the processes in the GDL matrices as the plot consist of two types structures, i.e. semicircular curves and vertical (sloping) lines. Electrical conductivity of GDL of vulcan and carbon dots are 0.053 and 0.039 mho/cm. The contact angle between conductive paper and water is 150.27; between gas diffusion layer and vulcan carbon 123.28 and between gas diffusion layer and carbon dot is 95.31. The surface of the gas diffusion layer with vulcan material is more hydrophobic than that made with carbon dot or in other words the gas diffusion layer with carbon is closer to hydrophilic properties. It can be said that the carbon can support gas diffusion layer both for hydrophobic and hydrophyllic condition.

Item Type:	Other
Subjects:	Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Dr Nirwan Syarif
Date Deposited:	12 Jun 2023 05:53
Last Modified:	12 Jun 2023 05:53
URI:	http://repository.unsri.ac.id/id/eprint/108435

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