High-entropy oxide for enhanced supercapacitors and precise electrochemical detection of dopamine at nanomolar levels

Elangovan Sivasurya; Francis Ashamary; Mari Elancheziyan; Jonnagaddala Harathi; M. Monika; Mani Arivazhagan; Narayanamoorthy Bhuvanendran; S. Philomina Mary; Raji Atchudan; Pramod K. Kalambate; Devaraj Manoj

doi:10.1016/j.nxmate.2025.100699

High-entropy oxide for enhanced supercapacitors and precise electrochemical detection of dopamine at nanomolar levels

Elangovan Sivasurya
, Francis Ashamary
, Mari Elancheziyan
, Jonnagaddala Harathi
, M. Monika
, Mani Arivazhagan
, Narayanamoorthy Bhuvanendran
, S. Philomina Mary
, Raji Atchudan
, Pramod K. Kalambate
, Devaraj Manoj

Department of Chemical and Biochemical Engineering

Karpagam Academy of Higher Education
University of Texas MD Anderson Cancer Center
Chiang Mai University
SRM University-AP
Bharathidasan University
Saveetha Institute of Medical and Technical Sciences (Deemed to be University)
Yeungnam University
University of Waterloo

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

6 Scopus citations

Abstract

The ability to synthesize multi-metal elements into a single-component material at the nanoscale, known as high entropy oxide (HEO) is earning great attention, especially in the field of electrocatalysis. However, the present methods for the synthesis of HEO often involve non-noble, noble, or refractory elements, which require complicated synthesis methods, making the control of shape and size highly challenging. In this regard, a class of six dissimilar elements (Co, Ni, Mn, Mo, V and Zn) with combination of non-noble and refractory elements has been formed a new type of (Co_0.5Ni_0.5Mn_0.5Mo_0.5V_0.5Zn_0.5)O based HEO. The multi-element interaction and carbonization network enhance ion conductivity, boosting specific capacitance to 698.4 F.g⁻¹, far surpassing conventional metal oxides. In addition, the HEO on screen printed electrode exhibited a notable increase in the oxidation peak current for the oxidation of dopamine, which can detect dopamine at nanomolar levels.

Original language	English
Article number	100699
Journal	Next Materials
Volume	8
DOIs	https://doi.org/10.1016/j.nxmate.2025.100699
State	Published - Jul 2025

Keywords

Dopamine oxidation
Electrocatalysis
High entropy-oxide
High-performance Supercapacitor
Modified electrode
Multifunctional electrode

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10.1016/j.nxmate.2025.100699

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Sivasurya, E., Ashamary, F., Elancheziyan, M., Harathi, J., Monika, M., Arivazhagan, M., Bhuvanendran, N., Mary, S. P., Atchudan, R., Kalambate, P. K., & Manoj, D. (2025). High-entropy oxide for enhanced supercapacitors and precise electrochemical detection of dopamine at nanomolar levels. Next Materials, 8, Article 100699. https://doi.org/10.1016/j.nxmate.2025.100699

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title = "High-entropy oxide for enhanced supercapacitors and precise electrochemical detection of dopamine at nanomolar levels",

abstract = "The ability to synthesize multi-metal elements into a single-component material at the nanoscale, known as high entropy oxide (HEO) is earning great attention, especially in the field of electrocatalysis. However, the present methods for the synthesis of HEO often involve non-noble, noble, or refractory elements, which require complicated synthesis methods, making the control of shape and size highly challenging. In this regard, a class of six dissimilar elements (Co, Ni, Mn, Mo, V and Zn) with combination of non-noble and refractory elements has been formed a new type of (Co0.5Ni0.5Mn0.5Mo0.5V0.5Zn0.5)O based HEO. The multi-element interaction and carbonization network enhance ion conductivity, boosting specific capacitance to 698.4 F.g⁻¹, far surpassing conventional metal oxides. In addition, the HEO on screen printed electrode exhibited a notable increase in the oxidation peak current for the oxidation of dopamine, which can detect dopamine at nanomolar levels.",

keywords = "Dopamine oxidation, Electrocatalysis, High entropy-oxide, High-performance Supercapacitor, Modified electrode, Multifunctional electrode",

author = "Elangovan Sivasurya and Francis Ashamary and Mari Elancheziyan and Jonnagaddala Harathi and M. Monika and Mani Arivazhagan and Narayanamoorthy Bhuvanendran and Mary, \{S. Philomina\} and Raji Atchudan and Kalambate, \{Pramod K.\} and Devaraj Manoj",

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year = "2025",

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doi = "10.1016/j.nxmate.2025.100699",

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T1 - High-entropy oxide for enhanced supercapacitors and precise electrochemical detection of dopamine at nanomolar levels

AU - Sivasurya, Elangovan

AU - Ashamary, Francis

AU - Elancheziyan, Mari

AU - Harathi, Jonnagaddala

AU - Monika, M.

AU - Arivazhagan, Mani

AU - Bhuvanendran, Narayanamoorthy

AU - Mary, S. Philomina

AU - Atchudan, Raji

AU - Kalambate, Pramod K.

AU - Manoj, Devaraj

PY - 2025/7

Y1 - 2025/7

N2 - The ability to synthesize multi-metal elements into a single-component material at the nanoscale, known as high entropy oxide (HEO) is earning great attention, especially in the field of electrocatalysis. However, the present methods for the synthesis of HEO often involve non-noble, noble, or refractory elements, which require complicated synthesis methods, making the control of shape and size highly challenging. In this regard, a class of six dissimilar elements (Co, Ni, Mn, Mo, V and Zn) with combination of non-noble and refractory elements has been formed a new type of (Co0.5Ni0.5Mn0.5Mo0.5V0.5Zn0.5)O based HEO. The multi-element interaction and carbonization network enhance ion conductivity, boosting specific capacitance to 698.4 F.g⁻¹, far surpassing conventional metal oxides. In addition, the HEO on screen printed electrode exhibited a notable increase in the oxidation peak current for the oxidation of dopamine, which can detect dopamine at nanomolar levels.

AB - The ability to synthesize multi-metal elements into a single-component material at the nanoscale, known as high entropy oxide (HEO) is earning great attention, especially in the field of electrocatalysis. However, the present methods for the synthesis of HEO often involve non-noble, noble, or refractory elements, which require complicated synthesis methods, making the control of shape and size highly challenging. In this regard, a class of six dissimilar elements (Co, Ni, Mn, Mo, V and Zn) with combination of non-noble and refractory elements has been formed a new type of (Co0.5Ni0.5Mn0.5Mo0.5V0.5Zn0.5)O based HEO. The multi-element interaction and carbonization network enhance ion conductivity, boosting specific capacitance to 698.4 F.g⁻¹, far surpassing conventional metal oxides. In addition, the HEO on screen printed electrode exhibited a notable increase in the oxidation peak current for the oxidation of dopamine, which can detect dopamine at nanomolar levels.

KW - Dopamine oxidation

KW - Electrocatalysis

KW - High entropy-oxide

KW - High-performance Supercapacitor

KW - Modified electrode

KW - Multifunctional electrode

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DO - 10.1016/j.nxmate.2025.100699

M3 - Article

AN - SCOPUS:105004427928

SN - 2949-8228

VL - 8

JO - Next Materials

JF - Next Materials

M1 - 100699

ER -

High-entropy oxide for enhanced supercapacitors and precise electrochemical detection of dopamine at nanomolar levels

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