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Strain- and humidity-insensitive, stretchable hydrogel-based oxygen sensor with corrosion-free electrodes for wireless oxygen detection.

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Title: Strain- and humidity-insensitive, stretchable hydrogel-based oxygen sensor with corrosion-free electrodes for wireless oxygen detection.
Authors: Lin, Haobin1,2 (AUTHOR), Li, Jianye1 (AUTHOR), Ding, Qiongling1 (AUTHOR), Wang, Hao1 (AUTHOR), Luo, Yibing1 (AUTHOR), Yu, Jiahao3 (AUTHOR), Zhang, He4 (AUTHOR), Yang, Bo-Ru1 (AUTHOR), Tao, Kai1,3,5 (AUTHOR) taokai@nwpu.edu.cn, Liu, Chuan1 (AUTHOR) liuchuan5@mail.sysu.edu.cn, Wu, Jin1,2,4,6,7 (AUTHOR) wujin8@mail.sysu.edu.cn
Source: Sensors & Actuators B: Chemical. Sep2024, Vol. 414, pN.PAG-N.PAG. 1p.
Subjects: Oxygen detectors, Oxygen electrodes, Gas detectors, Detector circuits, Design exhibitions, Platinum electrodes
Abstract: As the public puts higher and higher demands on wearing comfort, wearable gas sensors rapidly advance toward intrinsic flexibility and stretchability. However, many challenges arise during the development of intrinsically stretchable sensors. The deformation of the sensor following the movement of the wearer and uncertain changes in environmental humidity can cause additional interference signals. In addition, severe electrode corrosion also challenges the long-term continuous monitoring of sensors. Here, a stretchable strain- and humidity-insensitive O 2 sensor is proposed by adopting a serpentine hydrogel fiber structure and hydrophobic elastomer encapsulation strategy. Besides, the introduction of the Pt/C electrode and salt immersion strategy effectively eliminate electrode corrosion and electrolyte consumption, significantly prolonging hydrogel sensor's lifespan. Importantly, we propose, for the first time, an oxygen pump mechanism to elucidate positive current transferring and electrode corrosion-free in hydrogel oxygen sensors, which is further validated through well-designed experiments. Optimized sensor exhibits a wide detection range (30 ppm-100%), linear sensitivity (0.03%/ppm), exceptional repeatability and remarkable tolerance towards environmental variations. Integrating oxygen sensor with Bluetooth circuit further enables wireless monitoring of oxygen while confirming its practicality. This research provides insights into improving the interference immunity and longevity of flexible oxygen sensors while showcasing their potential in wearable applications. [Display omitted] ● Oxygen pump-based sensing mechanism is introduced to design hydrogel-based oxygen sensors with high stability. ● Hydrogel fiber and elastomer film encapsulation layer are designed to exhibit strain- and humidity-insensitivity. ● Wireless oxygen monitoring system is developed for the practical and comfortable oxygen detection. [ABSTRACT FROM AUTHOR]
Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 177483625
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Strain- and humidity-insensitive, stretchable hydrogel-based oxygen sensor with corrosion-free electrodes for wireless oxygen detection.
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  Data: <searchLink fieldCode="AR" term="%22Lin%2C+Haobin%22">Lin, Haobin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jianye%22">Li, Jianye</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ding%2C+Qiongling%22">Ding, Qiongling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Hao%22">Wang, Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Yibing%22">Luo, Yibing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Jiahao%22">Yu, Jiahao</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+He%22">Zhang, He</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Bo-Ru%22">Yang, Bo-Ru</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tao%2C+Kai%22">Tao, Kai</searchLink><relatesTo>1,3,5</relatesTo> (AUTHOR)<i> taokai@nwpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Chuan%22">Liu, Chuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liuchuan5@mail.sysu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Jin%22">Wu, Jin</searchLink><relatesTo>1,2,4,6,7</relatesTo> (AUTHOR)<i> wujin8@mail.sysu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Sensors+%26+Actuators+B%3A+Chemical%22">Sensors & Actuators B: Chemical</searchLink>. Sep2024, Vol. 414, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Oxygen+detectors%22">Oxygen detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen+electrodes%22">Oxygen electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+detectors%22">Gas detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Detector+circuits%22">Detector circuits</searchLink><br /><searchLink fieldCode="DE" term="%22Design+exhibitions%22">Design exhibitions</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum+electrodes%22">Platinum electrodes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: As the public puts higher and higher demands on wearing comfort, wearable gas sensors rapidly advance toward intrinsic flexibility and stretchability. However, many challenges arise during the development of intrinsically stretchable sensors. The deformation of the sensor following the movement of the wearer and uncertain changes in environmental humidity can cause additional interference signals. In addition, severe electrode corrosion also challenges the long-term continuous monitoring of sensors. Here, a stretchable strain- and humidity-insensitive O 2 sensor is proposed by adopting a serpentine hydrogel fiber structure and hydrophobic elastomer encapsulation strategy. Besides, the introduction of the Pt/C electrode and salt immersion strategy effectively eliminate electrode corrosion and electrolyte consumption, significantly prolonging hydrogel sensor's lifespan. Importantly, we propose, for the first time, an oxygen pump mechanism to elucidate positive current transferring and electrode corrosion-free in hydrogel oxygen sensors, which is further validated through well-designed experiments. Optimized sensor exhibits a wide detection range (30 ppm-100%), linear sensitivity (0.03%/ppm), exceptional repeatability and remarkable tolerance towards environmental variations. Integrating oxygen sensor with Bluetooth circuit further enables wireless monitoring of oxygen while confirming its practicality. This research provides insights into improving the interference immunity and longevity of flexible oxygen sensors while showcasing their potential in wearable applications. [Display omitted] ● Oxygen pump-based sensing mechanism is introduced to design hydrogel-based oxygen sensors with high stability. ● Hydrogel fiber and elastomer film encapsulation layer are designed to exhibit strain- and humidity-insensitivity. ● Wireless oxygen monitoring system is developed for the practical and comfortable oxygen detection. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. 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: 10.1016/j.snb.2024.135939
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Oxygen detectors
        Type: general
      – SubjectFull: Oxygen electrodes
        Type: general
      – SubjectFull: Gas detectors
        Type: general
      – SubjectFull: Detector circuits
        Type: general
      – SubjectFull: Design exhibitions
        Type: general
      – SubjectFull: Platinum electrodes
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      – TitleFull: Strain- and humidity-insensitive, stretchable hydrogel-based oxygen sensor with corrosion-free electrodes for wireless oxygen detection.
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            NameFull: Lin, Haobin
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            NameFull: Li, Jianye
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            – D: 01
              M: 09
              Text: Sep2024
              Type: published
              Y: 2024
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              Value: 414
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            – TitleFull: Sensors & Actuators B: Chemical
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