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Interface engineeri...
Interface engineering induced charge rearrangement boosting reversible oxygen electrocatalysis activity of heterogeneous FeCo-MnO@N-doped carbon nanobox
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- Ye, Ying (författare)
- School of Materials Science and Engineering, Anhui University of Science and Technology, Anhui, Huainan, China
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- Zhang, Lei (författare)
- School of Materials Science and Engineering, Anhui University of Science and Technology, Anhui, Huainan, China; Institute of Energy, Hefei Comprehensive National Science Center, Anhui, Hefei, China
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- Zhu, Qiliang (författare)
- School of Materials Science and Engineering, Anhui University of Science and Technology, Anhui, Huainan, China
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- Du, Ziang (författare)
- School of Materials Science and Engineering, Anhui University of Science and Technology, Anhui, Huainan, China
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- Wågberg, Thomas, 1971- (författare)
- Umeå universitet,Institutionen för fysik
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- Hu, Guangzhi (författare)
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Yunnan, Kunming, China
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Journal of Colloid and Interface Science. - 0021-9797 .- 1095-7103. ; 650, s. 1350-1360
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The advancement of bifunctional oxygen catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is imperative yet challenging for the optimization of Zn-air batteries. In this study, we reported the successful incorporation of a novel Mott-Schottky catalytic site within a MnO-FeCo heterojunction into an N-doping carbon nanobox, taking into consideration the effects of the intrinsic electric field and hollow/porous support carriers for electrocatalyst design. As expected, the resulting heterogeneous catalyst exhibited an encouraging half-wave potential of 0.88 V and an impressive limiting-current density of 5.62 mA/cm2 for the ORR, as well as a minimal overpotential of 271 mV at 10 mA/cm2 for the OER, both in alkaline conditions. Furthermore, the Zn-air battery constructed with the heterojunction nanobox product displayed a decent potential gap of 0.621 V, an outstanding power density of 253 mW/cm2, a considerable specific capacity of 761 mAh/gZn, and exceptional stability, with up to 336 h of cycling charging and discharging operation. Consequently, this method of modulating the catalyst's surface charge distribution through an internal electric field at the interface and facilitating mass transport offers a novel avenue for the development of robust bifunctional oxygen catalysts.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
Nyckelord
- Charge rearrangement
- Mott-Schottky heterojunction
- Oxygen evolution reaction
- Oxygen reduction reaction
- Zn-air battery
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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