Work

Photoelectrochemical behavior of GaTe nanoflakes prepared by exfoliation

Year: 2024

Type: article

Abstract: Gallium telluride (GaTe), a layered semiconductor, was investigated in the photoelectrochemical (PEC) hydrogen evolution reaction (HER). GaTe nanoflakes were prepared by both mechanical and liquid phase exfoliations, and were subsequently used to obtain micro-, and macroelectrodes. When studying them as photocathodes, the highest photocurrent density of ∼6 mA cm −2 was achieved with a 808±50 nm thick flake. Importantly, the GaTe microelectrodes presented a thickness dependent PEC activity. Macroscopic (1 cm 2 ) GaTe electrodes were also prepared from the liquid phase exfoliated nanoflakes, by immobilizing them on glassy carbon electrodes. GaTe photocathodes showed loading and solar power flux dependent PEC activity and reaching a maximum photocurrent of ∼4 mA cm –2 with a good photostability. Overall, these results add another candidate to the pool of photoelectrodes applicable in different PEC processes.

Source: Electrochimica Acta

DOI: 10.1016/j.electacta.2024.145105

Authors: Qianqian Ba, Péter S. Tóth, Cintia Hajdu, Csaba Janáky

Institution: University of Szeged

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $3,870