CoSe2 is a typical transition metal chalcogenide and an hydrogen evolution reaction hydrogen evolution catalyst due to its efficient and inexpensive characteristics. In this work, CoSe2/CNT composite was synthesized through a one-step solvothermal method. Specifically, a current density of 10 mA cm−2 can be achieved under an overpotential of 163 mV, and the Tafel slope is 69.4 mV dec−1. The reasons for these excellent performances are: 1) the abundant catalytic active sites of CoSe2; 2) the high conductivity of CNTs; and 3) the synergistic effect between CoSe2 and CNTs; iv the solar irradiation excites electrons to join the reaction. This work proposes a new way to reasonably design the high-efficiency and low-cost transition metal chalcogenide hydrogen evolution catalysts.
CITATION STYLE
Pi, Z. G., Ye, H., Han, Z., Yu, P., Yin, Z., & Ma, X. (2022). Promising CoSe2-CNT composite catalyst for efficient photoelectrochemical hydrogen evolution reaction. Frontiers in Materials, 9. https://doi.org/10.3389/fmats.2022.1005221
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