Structurally engineered highly efficient electrocatalytic performance of 3-dimensional Mo/Ni chalcogenides for boosting overall water splitting performance.

Chemosphere

Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), Naju, 58330, Jeollanamdo, Republic of Korea; Research Institute, NEEL Sciences, INC., Naju, Republic of Korea; Center for Energy Storage System, Chonnam National University, Gwangju, 61186, Republic of Korea. Electronic address:

Published: March 2024

Hydrogen production from water splitting combined with renewable electricity can provide a viable solution to the energy crisis. A novel MoS/NiS/NiS heterostructure is designed as a bifunctional electrocatalyst by facile hydrothermal method to demonstrate excellent electrocatalytic performance towards overall water splitting applications. MoS/NiS/NiS heterostructure necessitates a low overpotential of 81 mV and 210 mV to attain a current density of 10 mA cm during the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Consequently, the MoS/NiS/NiS heterostructure-based electrolyzer shows a low cell voltage of 1.54 V at 10 mA cm. The present work highlights the significance of the heterostructure configuration of transition metal sulfide-based electrocatalysts for electrochemical overall water splitting applications.

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http://dx.doi.org/10.1016/j.chemosphere.2024.141233DOI Listing

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