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

Shivraj Mahadik; Subramani Surendran; Dae Jun Moon; Joon Young Kim; Gnanaprakasam Janani; Sebastian Cyril Jesudass; Krishnan Veeramani; Hyeonuk Choi; Sathyanarayanan Shanmugapriya; Il Goo Kim; Pildo Jung; Yong Il Park; Jaeyeong Heo; Tae-Hoon Kim; Kootak Hong; Uk Sim

doi:10.1016/j.chemosphere.2024.141233

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

Chemosphere. 2024 Mar:352:141233. doi: 10.1016/j.chemosphere.2024.141233. Epub 2024 Jan 22.

Authors

Shivraj Mahadik¹, Subramani Surendran², Dae Jun Moon³, Joon Young Kim³, Gnanaprakasam Janani², Sebastian Cyril Jesudass¹, Krishnan Veeramani¹, Hyeonuk Choi⁴, Sathyanarayanan Shanmugapriya², Il Goo Kim⁵, Pildo Jung⁵, Yong Il Park⁶, Jaeyeong Heo¹, Tae-Hoon Kim⁷, Kootak Hong⁸, Uk Sim⁹

Affiliations

¹ Department of Materials Science & Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
² Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), Naju, 58330, Jeollanamdo, Republic of Korea.
³ 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.
⁴ Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
⁵ Research Institute, NEEL Sciences, INC., Naju, Republic of Korea.
⁶ School of Chemical Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
⁷ Department of Materials Science & Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea. Electronic address: thk@jnu.ac.kr.
⁸ Department of Materials Science & Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea. Electronic address: kthong@jnu.ac.kr.
⁹ 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: usim@kentech.ac.kr.

PMID: 38266882
DOI: 10.1016/j.chemosphere.2024.141233

Abstract

Hydrogen production from water splitting combined with renewable electricity can provide a viable solution to the energy crisis. A novel MoS₂/NiS₂/Ni₃S₄ heterostructure is designed as a bifunctional electrocatalyst by facile hydrothermal method to demonstrate excellent electrocatalytic performance towards overall water splitting applications. MoS₂/NiS₂/Ni₃S₄ heterostructure necessitates a low overpotential of 81 mV and 210 mV to attain a current density of 10 mA cm^-2 during the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Consequently, the MoS₂/NiS₂/Ni₃S₄ heterostructure-based electrolyzer shows a low cell voltage of 1.54 V at 10 mA cm^-2. The present work highlights the significance of the heterostructure configuration of transition metal sulfide-based electrocatalysts for electrochemical overall water splitting applications.

Keywords: Bifunctional electrocatalyst; Hydrogen evolution reaction; Overall water splitting; Oxygen evolution reaction.

MeSH terms

Electricity*
Hydrogen
Molybdenum*
Oxygen
Sulfides

Substances

Molybdenum
Hydrogen
Oxygen
Sulfides