Bimetallic NiO/NiFe2O4 heterostructures with interfacial effects for boosting electrochemical water splitting applications

Sebastian Cyril Jesudass; Subramani Surendran; Joon Young Kim; Sathyanarayanan Shanmugapriya; Dae Jun Moon; Gnanaprakasam Janani; Krishnan Veeramani; Shivraj Mahadik; Jinuk Choi; Pildo Jung; Il Goo Kim; Hyunjung Park; Hyun Soo Han; Heechae Choi; Gibum Kwon; Jaeyeong Heo; Kootak Hong; Tae Hoon Kim; Yong Il Park; Uk Sim

doi:10.1016/j.jelechem.2023.117947

Bimetallic NiO/NiFe₂O₄ heterostructures with interfacial effects for boosting electrochemical water splitting applications

Sebastian Cyril Jesudass, Subramani Surendran, Joon Young Kim, Sathyanarayanan Shanmugapriya, Dae Jun Moon, Gnanaprakasam Janani, Krishnan Veeramani, Shivraj Mahadik, Jinuk Choi, Pildo Jung, Il Goo Kim, Hyunjung Park, Hyun Soo Han, Heechae Choi, Gibum Kwon, Jaeyeong Heo, Kootak Hong, Tae Hoon Kim^*, Yong Il Park, Uk Sim

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The present work reports the simple preparation of NiO/ NiFe₂O₄ heterostructures with interfacial effects as bifunctional electrocatalysts for overall water splitting. At increasing Ni/Fe precursor ratios, the evolution of NiO phases is observed in NFO heterostructures, which incorporate differential strain effects at the interface. The modulated heterojunction of NiO/NiFe₂O₄ heterostructure incorporates compressive strain at the interfaces enhancing its electrocatalytic performances. Notably, NiO/NiFe₂O₄ heterostructure prepared at equimolar Ni/Fe ratios (NFO-1) exhibits significant electrocatalytic performances due to modulated interfacial effects. As such, NFO-1 exhibits lower OER and HER overpotentials of about 242 mV and 106 mV for 10 mA cm⁻² current density and exhibits improved water splitting activity, requiring 1.56 V to drive 10 mA cm⁻² current density. The present work emphasizes the importance of modulating the heterostructures of transition metal oxides to enhance the interfacial effects as bifunctional electrocatalysts for water splitting applications.

Original language	English
Article number	117947
Journal	Journal of Electroanalytical Chemistry
Volume	952
DOIs	https://doi.org/10.1016/j.jelechem.2023.117947
Publication status	Published - 1 Jan 2024

Keywords

Energy conversion
Heterogenous electrocatalysts
Heterostructures
Hydrogen production
Transition metal oxide
Water splitting

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jelechem.2023.117947

Cite this

Jesudass, S. C., Surendran, S., Kim, J. Y., Shanmugapriya, S., Moon, D. J., Janani, G., Veeramani, K., Mahadik, S., Choi, J., Jung, P., Kim, I. G., Park, H., Han, H. S., Choi, H., Kwon, G., Heo, J., Hong, K., Kim, T. H., Park, Y. I., & Sim, U. (2024). Bimetallic NiO/NiFe₂O₄ heterostructures with interfacial effects for boosting electrochemical water splitting applications. Journal of Electroanalytical Chemistry, 952, Article 117947. https://doi.org/10.1016/j.jelechem.2023.117947

@article{0600412e2b6f43afa457b4faf25cc4e7,

title = "Bimetallic NiO/NiFe2O4 heterostructures with interfacial effects for boosting electrochemical water splitting applications",

abstract = "The present work reports the simple preparation of NiO/ NiFe2O4 heterostructures with interfacial effects as bifunctional electrocatalysts for overall water splitting. At increasing Ni/Fe precursor ratios, the evolution of NiO phases is observed in NFO heterostructures, which incorporate differential strain effects at the interface. The modulated heterojunction of NiO/NiFe2O4 heterostructure incorporates compressive strain at the interfaces enhancing its electrocatalytic performances. Notably, NiO/NiFe2O4 heterostructure prepared at equimolar Ni/Fe ratios (NFO-1) exhibits significant electrocatalytic performances due to modulated interfacial effects. As such, NFO-1 exhibits lower OER and HER overpotentials of about 242 mV and 106 mV for 10 mA cm−2 current density and exhibits improved water splitting activity, requiring 1.56 V to drive 10 mA cm−2 current density. The present work emphasizes the importance of modulating the heterostructures of transition metal oxides to enhance the interfacial effects as bifunctional electrocatalysts for water splitting applications.",

keywords = "Energy conversion, Heterogenous electrocatalysts, Heterostructures, Hydrogen production, Transition metal oxide, Water splitting",

author = "Jesudass, {Sebastian Cyril} and Subramani Surendran and Kim, {Joon Young} and Sathyanarayanan Shanmugapriya and Moon, {Dae Jun} and Gnanaprakasam Janani and Krishnan Veeramani and Shivraj Mahadik and Jinuk Choi and Pildo Jung and Kim, {Il Goo} and Hyunjung Park and Han, {Hyun Soo} and Heechae Choi and Gibum Kwon and Jaeyeong Heo and Kootak Hong and Kim, {Tae Hoon} and Park, {Yong Il} and Uk Sim",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2024",

month = jan,

day = "1",

doi = "10.1016/j.jelechem.2023.117947",

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Jesudass, SC, Surendran, S, Kim, JY, Shanmugapriya, S, Moon, DJ, Janani, G, Veeramani, K, Mahadik, S, Choi, J, Jung, P, Kim, IG, Park, H, Han, HS, Choi, H, Kwon, G, Heo, J, Hong, K, Kim, TH, Park, YI & Sim, U 2024, 'Bimetallic NiO/NiFe₂O₄ heterostructures with interfacial effects for boosting electrochemical water splitting applications', Journal of Electroanalytical Chemistry, vol. 952, 117947. https://doi.org/10.1016/j.jelechem.2023.117947

TY - JOUR

T1 - Bimetallic NiO/NiFe2O4 heterostructures with interfacial effects for boosting electrochemical water splitting applications

AU - Jesudass, Sebastian Cyril

AU - Surendran, Subramani

AU - Kim, Joon Young

AU - Shanmugapriya, Sathyanarayanan

AU - Moon, Dae Jun

AU - Janani, Gnanaprakasam

AU - Veeramani, Krishnan

AU - Mahadik, Shivraj

AU - Choi, Jinuk

AU - Jung, Pildo

AU - Kim, Il Goo

AU - Park, Hyunjung

AU - Han, Hyun Soo

AU - Choi, Heechae

AU - Kwon, Gibum

AU - Heo, Jaeyeong

AU - Hong, Kootak

AU - Kim, Tae Hoon

AU - Park, Yong Il

AU - Sim, Uk

PY - 2024/1/1

Y1 - 2024/1/1

N2 - The present work reports the simple preparation of NiO/ NiFe2O4 heterostructures with interfacial effects as bifunctional electrocatalysts for overall water splitting. At increasing Ni/Fe precursor ratios, the evolution of NiO phases is observed in NFO heterostructures, which incorporate differential strain effects at the interface. The modulated heterojunction of NiO/NiFe2O4 heterostructure incorporates compressive strain at the interfaces enhancing its electrocatalytic performances. Notably, NiO/NiFe2O4 heterostructure prepared at equimolar Ni/Fe ratios (NFO-1) exhibits significant electrocatalytic performances due to modulated interfacial effects. As such, NFO-1 exhibits lower OER and HER overpotentials of about 242 mV and 106 mV for 10 mA cm−2 current density and exhibits improved water splitting activity, requiring 1.56 V to drive 10 mA cm−2 current density. The present work emphasizes the importance of modulating the heterostructures of transition metal oxides to enhance the interfacial effects as bifunctional electrocatalysts for water splitting applications.

AB - The present work reports the simple preparation of NiO/ NiFe2O4 heterostructures with interfacial effects as bifunctional electrocatalysts for overall water splitting. At increasing Ni/Fe precursor ratios, the evolution of NiO phases is observed in NFO heterostructures, which incorporate differential strain effects at the interface. The modulated heterojunction of NiO/NiFe2O4 heterostructure incorporates compressive strain at the interfaces enhancing its electrocatalytic performances. Notably, NiO/NiFe2O4 heterostructure prepared at equimolar Ni/Fe ratios (NFO-1) exhibits significant electrocatalytic performances due to modulated interfacial effects. As such, NFO-1 exhibits lower OER and HER overpotentials of about 242 mV and 106 mV for 10 mA cm−2 current density and exhibits improved water splitting activity, requiring 1.56 V to drive 10 mA cm−2 current density. The present work emphasizes the importance of modulating the heterostructures of transition metal oxides to enhance the interfacial effects as bifunctional electrocatalysts for water splitting applications.

KW - Energy conversion

KW - Heterogenous electrocatalysts

KW - Heterostructures

KW - Hydrogen production

KW - Transition metal oxide

KW - Water splitting

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U2 - 10.1016/j.jelechem.2023.117947

DO - 10.1016/j.jelechem.2023.117947

M3 - Article

AN - SCOPUS:85178495808

SN - 1572-6657

VL - 952

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

M1 - 117947

ER -