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Interface potential drop in electroosmosis: An electrochemical perspective.

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Title: Interface potential drop in electroosmosis: An electrochemical perspective.
Authors: Xu, Chaoyang1,2,3 (AUTHOR), Zhou, Jian1,2 (AUTHOR) zjelim@zju.edu.cn, Jiang, Yicheng1,2 (AUTHOR), Tao, Yanli1,4 (AUTHOR), Yu, Jindi5 (AUTHOR)
Source: Drying Technology. 2026, Vol. 44 Issue 6, p770-786. 17p.
Subjects: Electro-osmosis, Overpotential, Electrochemical apparatus, Voltammetry, Electrode potential, Electrode reactions, Electrochemical analysis
Abstract: Recent studies have increasingly highlighted the critical role of interfacial electrochemical reactions in electroosmotic processes. However, existing theoretical frameworks often fail to adequately capture the coupling between electrochemical reactions and electroosmosis, while experimental approaches struggle to directly characterize the evolving electrochemical behavior. In this study, Linear Sweep Voltammetry (LSV), an advanced technique capable of directly capturing electrochemical reaction characteristics, was employed to investigate the interfacial potential. From an electrochemical perspective, the interfacial potential was shown to comprise an equilibrium potential and multiple overpotentials, including activation, concentration, and Ohmic components. The results demonstrate that the equilibrium potential plays a decisive role in electroosmotic initiation. When the anodic potential remains below the equilibrium potential, no current is generated, demonstrating the absence of both electrochemical reactions and electroosmotic flow. As electroosmosis proceeds, the contribution of the anodic equilibrium potential increases progressively, accounting for 16%–23% of the total potential drop. Polarization curve analysis further confirms the coexistence of multiple overpotentials beyond the Ohmic component. Compared with a conventional electrolysis system, the electroosmotic system exhibits a substantially higher anodic potential drop, primarily attributed to enhanced concentration and activation overpotentials. Moreover, the evolution of polarization resistance closely follows the early-stage current response, providing additional evidence for the dominance of concentration overpotential. Building on the clarified composition of the anodic potential, this study validates the feasibility of using the anodic potential drop as a reliable indicator of electroosmotic drainage performance. A strong correlation with drainage rate is established, confirming its practical applicability as an engineering indicator. These findings provide new insights into the electrochemical mechanisms governing electroosmosis and offer a foundation for integrating electrochemical reaction dynamics into the optimization of electroosmotic systems. HIGHLIGHTS: Investigate the role of electrochemical reactions in the electroosmotic interface potential. Applied linear sweep voltammetry (LSV) to quantify key electrochemical potentials at the interface. Designed comparative experiments to distinguish electrochemical behaviors at electroosmotic and electrolytic interfaces. Explored electrochemical indicators for characterizing interfacial behavior in electroosmosis. [ABSTRACT FROM AUTHOR]
Copyright of Drying Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 193526484
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PubTypeId: academicJournal
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  Data: Interface potential drop in electroosmosis: An electrochemical perspective.
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  Data: <searchLink fieldCode="AR" term="%22Xu%2C+Chaoyang%22">Xu, Chaoyang</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Jian%22">Zhou, Jian</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> zjelim@zju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Yicheng%22">Jiang, Yicheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tao%2C+Yanli%22">Tao, Yanli</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Jindi%22">Yu, Jindi</searchLink><relatesTo>5</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Drying+Technology%22">Drying Technology</searchLink>. 2026, Vol. 44 Issue 6, p770-786. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Electro-osmosis%22">Electro-osmosis</searchLink><br /><searchLink fieldCode="DE" term="%22Overpotential%22">Overpotential</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+apparatus%22">Electrochemical apparatus</searchLink><br /><searchLink fieldCode="DE" term="%22Voltammetry%22">Voltammetry</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+potential%22">Electrode potential</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+reactions%22">Electrode reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+analysis%22">Electrochemical analysis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Recent studies have increasingly highlighted the critical role of interfacial electrochemical reactions in electroosmotic processes. However, existing theoretical frameworks often fail to adequately capture the coupling between electrochemical reactions and electroosmosis, while experimental approaches struggle to directly characterize the evolving electrochemical behavior. In this study, Linear Sweep Voltammetry (LSV), an advanced technique capable of directly capturing electrochemical reaction characteristics, was employed to investigate the interfacial potential. From an electrochemical perspective, the interfacial potential was shown to comprise an equilibrium potential and multiple overpotentials, including activation, concentration, and Ohmic components. The results demonstrate that the equilibrium potential plays a decisive role in electroosmotic initiation. When the anodic potential remains below the equilibrium potential, no current is generated, demonstrating the absence of both electrochemical reactions and electroosmotic flow. As electroosmosis proceeds, the contribution of the anodic equilibrium potential increases progressively, accounting for 16%–23% of the total potential drop. Polarization curve analysis further confirms the coexistence of multiple overpotentials beyond the Ohmic component. Compared with a conventional electrolysis system, the electroosmotic system exhibits a substantially higher anodic potential drop, primarily attributed to enhanced concentration and activation overpotentials. Moreover, the evolution of polarization resistance closely follows the early-stage current response, providing additional evidence for the dominance of concentration overpotential. Building on the clarified composition of the anodic potential, this study validates the feasibility of using the anodic potential drop as a reliable indicator of electroosmotic drainage performance. A strong correlation with drainage rate is established, confirming its practical applicability as an engineering indicator. These findings provide new insights into the electrochemical mechanisms governing electroosmosis and offer a foundation for integrating electrochemical reaction dynamics into the optimization of electroosmotic systems. HIGHLIGHTS: Investigate the role of electrochemical reactions in the electroosmotic interface potential. Applied linear sweep voltammetry (LSV) to quantify key electrochemical potentials at the interface. Designed comparative experiments to distinguish electrochemical behaviors at electroosmotic and electrolytic interfaces. Explored electrochemical indicators for characterizing interfacial behavior in electroosmosis. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Drying Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/07373937.2026.2636630
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 770
    Subjects:
      – SubjectFull: Electro-osmosis
        Type: general
      – SubjectFull: Overpotential
        Type: general
      – SubjectFull: Electrochemical apparatus
        Type: general
      – SubjectFull: Voltammetry
        Type: general
      – SubjectFull: Electrode potential
        Type: general
      – SubjectFull: Electrode reactions
        Type: general
      – SubjectFull: Electrochemical analysis
        Type: general
    Titles:
      – TitleFull: Interface potential drop in electroosmosis: An electrochemical perspective.
        Type: main
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            NameFull: Xu, Chaoyang
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            NameFull: Zhou, Jian
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            NameFull: Jiang, Yicheng
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            NameFull: Tao, Yanli
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              M: 05
              Text: 2026
              Type: published
              Y: 2026
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