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Co3O4 nanofibers compounded with Pt/C as efficient bifunctional electrocatalysts for rechargeable Zn-air battery.

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Title: Co3O4 nanofibers compounded with Pt/C as efficient bifunctional electrocatalysts for rechargeable Zn-air battery.
Authors: Yang, Weimin1 (AUTHOR) ywm13@163.com, Wang, Xiaoyu2 (AUTHOR), Yan, Yufei2 (AUTHOR), Ding, Xifeng2 (AUTHOR) dingxifeng@njust.edu.cn
Source: Journal of Materials Science: Materials in Electronics. Apr2023, Vol. 34 Issue 10, p1-11. 11p.
Abstract: Exploring efficient bifunctional electrocatalysts is critical for metal-air battery commercialization. Co3O4 produced by electrospinning was combined with Pt/C via ultrasonic vibration in this study. As a bifunctional oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) electrocatalyst, Co3O4@Pt/C nanofibers were employed. The Co3O4@Pt/C nanofibers with a mass ratio of 1:1 (CP11) show excellent OER activity. It outperforms commercial Pt/C and Co3O4 electrocatalysts with a low overpotential (442 mV) and Tafel slope (71.36 mV dec− 1) at 10 mA cm− 2. With a half-wave potential of 0.74 V and diffusion limiting current density of 4.3 mA cm− 2, CP11 provides exceptional catalytic activity for ORR. The expanded surface area of Co3O4 nanofibers and the unique interaction between the Pt/C and metal oxides may be responsible for the high bifunctional catalytic activity of Co3O4@Pt/C nanofibers. More importantly, the zinc-air battery based on CP11 has a 0.64 V charging-discharging voltage gap and long-term stability. The improved OER/ORR bifunctional performance of Co3O4@Pt/C demonstrates the feasibility of using it in high-power energy storage and conversion devices. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature 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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  Data: Co<subscript>3</subscript>O<subscript>4</subscript> nanofibers compounded with Pt/C as efficient bifunctional electrocatalysts for rechargeable Zn-air battery.
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Weimin%22">Yang, Weimin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ywm13@163.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Xiaoyu%22">Wang, Xiaoyu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Yufei%22">Yan, Yufei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ding%2C+Xifeng%22">Ding, Xifeng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> dingxifeng@njust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Apr2023, Vol. 34 Issue 10, p1-11. 11p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Exploring efficient bifunctional electrocatalysts is critical for metal-air battery commercialization. Co3O4 produced by electrospinning was combined with Pt/C via ultrasonic vibration in this study. As a bifunctional oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) electrocatalyst, Co3O4@Pt/C nanofibers were employed. The Co3O4@Pt/C nanofibers with a mass ratio of 1:1 (CP11) show excellent OER activity. It outperforms commercial Pt/C and Co3O4 electrocatalysts with a low overpotential (442 mV) and Tafel slope (71.36 mV dec− 1) at 10 mA cm− 2. With a half-wave potential of 0.74 V and diffusion limiting current density of 4.3 mA cm− 2, CP11 provides exceptional catalytic activity for ORR. The expanded surface area of Co3O4 nanofibers and the unique interaction between the Pt/C and metal oxides may be responsible for the high bifunctional catalytic activity of Co3O4@Pt/C nanofibers. More importantly, the zinc-air battery based on CP11 has a 0.64 V charging-discharging voltage gap and long-term stability. The improved OER/ORR bifunctional performance of Co3O4@Pt/C demonstrates the feasibility of using it in high-power energy storage and conversion devices. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature 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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        Value: 10.1007/s10854-023-10287-z
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      – Code: eng
        Text: English
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      – TitleFull: Co3O4 nanofibers compounded with Pt/C as efficient bifunctional electrocatalysts for rechargeable Zn-air battery.
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            NameFull: Yang, Weimin
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            NameFull: Wang, Xiaoyu
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            NameFull: Yan, Yufei
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            – D: 01
              M: 04
              Text: Apr2023
              Type: published
              Y: 2023
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              Value: 34
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            – TitleFull: Journal of Materials Science: Materials in Electronics
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