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Dung DT, Lam DV, Roh E, Ji S, Yuk JM, Kim JH, Kim H, Lee SM. Ni/Co/Co 3O 4@C nanorods derived from a MOF@MOF hybrid for efficient overall water splitting. NANOSCALE 2023; 15:1794-1805. [PMID: 36602000 DOI: 10.1039/d2nr05686k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The design of nanostructured materials for efficient bifunctional electrocatalysts has gained tremendous attention, yet developing a fast and effective synthesis strategy remains a challenge. Here, we present a fast and scalable synthetic method of Ni/Co/Co3O4@C nanorods for efficient overall water splitting. Using microwave synthesis, we first produced a unique Ni-MOF@Co-MOF in a few minutes. Subsequently, we transformed the MOF@MOF into hybrid Ni/Co/Co3O4 nanoparticles covered with graphitic carbon in a few seconds using laser-scribing. The prepared bimetallic catalysts showed remarkably low overpotentials of 246 mV for the oxygen evolution reaction (OER) and 143 mV for the hydrogen evolution reaction (HER) at a current density of 30 mA cm-2. An electrolyzer assembled with the bimetallic catalysts delivered a high current density of 20 mA cm-2 at a voltage of 1.6 V and exhibited good durability (nearly 91.6% retention even after a long-running operation of 24 h at a voltage of 1.52 V). Our proposed method could serve as a powerful method for creating various multimetallic hybrid nanocatalysts with unique hierarchical structures from diverse MOFs.
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Affiliation(s)
- Dao Thi Dung
- Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea.
- University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, South Korea
| | - Do Van Lam
- Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea.
| | - Euijin Roh
- Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, South Korea
| | - Sanghyeon Ji
- Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Deajeon, 34141, South Korea
| | - Jong Min Yuk
- Korea Advanced Institute of Science and Technology (KAIST), 291 Deahak-ro, Yuseong-gu, Deajeon, 34141, South Korea
| | - Jae-Hyun Kim
- Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea.
- University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, South Korea
| | - Hyunuk Kim
- University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, South Korea
- Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, South Korea
| | - Seung-Mo Lee
- Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea.
- University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, South Korea
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Archana S, Athika M, Elumalai P. Supercapattery and full-cell lithium-ion battery performances of a [Ni(Schiff base)]-derived Ni/NiO/nitrogen-doped carbon heterostructure. NEW J CHEM 2020. [DOI: 10.1039/d0nj01602k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Ni(Schiff base)]-derived Ni/NiO on the conductive carbon network is explored as an electrode material for high-performance supercapatteries and lithium-ion batteries.
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Affiliation(s)
- S. Archana
- Electrochemical Energy and Sensors Lab
- Department of Green Energy Technology
- Madanjeet School of Green Energy Technologies
- Pondicherry University
- Puducherry-605014
| | - M. Athika
- Electrochemical Energy and Sensors Lab
- Department of Green Energy Technology
- Madanjeet School of Green Energy Technologies
- Pondicherry University
- Puducherry-605014
| | - P. Elumalai
- Electrochemical Energy and Sensors Lab
- Department of Green Energy Technology
- Madanjeet School of Green Energy Technologies
- Pondicherry University
- Puducherry-605014
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