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January 27, 2025
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High-performance biphasic NaxMnO2 electrodes for cost-effective and high-power aqueous sodium batteries and capacitors

Publicated to: Materials Advances. 6 (3): 1152-1163 - 2025-02-03 6(3), DOI: 10.1039/d4ma01150c

Authors:

Boichuk, A; Boichuk, T; Eledath-Changarath, M; Krecmarovà, M; Abargues, R; Boix, PP; Asensio, MC; Agouram, S; Sánchez-Royo, JF
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Affiliations

CSIC, Inst Ciencia Mat Madrid ICMM, Madrid 28049, Spain - Author
King Danylo Univ, UA-76000 Ivano Frankivsk, Ukraine - Author
Univ Politecn Valencia, Agencia Estatal Consejo Super Invest Cient, Inst Tecnol Quim, Valencia 46022, Spain - Author
Univ Valencia, Dept Appl Phys & Electromagnetism, Valencia 46100, Spain - Author
Univ Valencia, ICMUV, Inst Ciencia Mat, Valencia 46071, Spain - Author
Univ Valencia, MATINEE CSIC Associated Unit, ICMM, ICMUV, Valencia, Spain - Author
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Abstract

Aqueous sodium batteries and capacitors offer a low-cost and sustainable alternative to lithium-based energy storage systems, with their performance crucially dependant on the choice of electrode materials. Among the candidates commonly used in sodium-ion devices, various phase modifications of presodiated manganese oxide are considered promising. In this work, we synthesized biphasic (orthorhombic/monoclinic) NaMnO2 using a cost-effective sol-gel technique and investigated its performance as an electrode material for aqueous sodium electrochemical systems. The performance was evaluated through cyclic voltammetry and galvanostatic charge-discharge measurements. The results demonstrated that NaMnO2 electrodes were highly suitable for high-power energy devices, exhibiting a specific capacity of 103 mA h g-1 and high capacity retention, even under high current conditions (82% capacity retention as the current increased from 1C to 20C). The superior electrochemical performance, especially under high discharge current conditions, was attributed to the optimal combination of different pseudocapacitive mechanisms associated with the biphasic monoclinic-orthorhombic phase structure, which ensured both high capacity and stability during cycling, as well as the morphology of the samples. These results paved the way for the development of high-power, stable, and cost-effective aqueous sodium-ion storage devices.
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Keywords

Cathode materialsManganese oxideNamno

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Materials Advances due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Chemistry (Miscellaneous).

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-03:

  • WoS: 6
  • Scopus: 7
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-03:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 7 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Ukraine.

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Awards linked to the item

The present work has been supported by the projects PID2023-146181OB-100 of the Ministerio de Ciencia, Innovacion y Universidades, MFA 2022/009 (SPINO2D) and Prometeo/2021/082 of the Generalitat Valenciana as well as the project TED 2021-132656B-C21 and TED 2021-132656B-C22 granted by the Call 2021 - "Ecological Transition and Digital Transition Projects" promoted by the Ministry of Science and Innovation, funded by the European Union within the "NextGeneration" EU program, the Recovery, Transformation, and Resilience Plan, and the State Investigation Agency. A. B and T. B acknowledge financial support from the University of Valencia through the Program "Universitat de Valencia with Ukraine", the Generalitat Valenciana through the Program "Acoge CV-UCRANIA personal investigador" of the Conselleria de Innovacion, Universidades, Ciencia y Sociedad Digital, and the Ministerio of Universidades through the program "Plan de Accion Universidad-Refugio". M. K. acknowledges the APOSTD programme (contract APOSTD/2020/103). M. E. C. acknowledges financial support from the Santiago Grisolia Program of the Generalitat Valenciana (grant CIGRIS/2021/150). Authors are grateful to the SCSIE, University of Valencia, for providing HRTEM facility.
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