A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation
Despite the tremendous advances of electrocatalysts for the hydrogen and oxygen evolution reactions (HER/OER), there are few reports on bifunctional catalysts for the HER and plastic electroreforming. Herein, we present a facile hydrothermal and selenization treatment to fabricate cobalt selenide na...
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sg-ntu-dr.10356-1642702023-01-16T02:42:36Z A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation Li, Ying Zhao, Yunxing Hu, Zhao Wang, Zilei Li, Hong Gao, Pingqi School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Electrocatalysts Bifunctional Catalysts Despite the tremendous advances of electrocatalysts for the hydrogen and oxygen evolution reactions (HER/OER), there are few reports on bifunctional catalysts for the HER and plastic electroreforming. Herein, we present a facile hydrothermal and selenization treatment to fabricate cobalt selenide nanosheets on nickel foam (0.1-CoSe2/NF) as a bifunctional catalyst for plastic-electroreforming assisted water electrolysis. Benefiting from its large specific surface area, abundant active sites, high conductivity and 3D porous structure, 0.1-CoSe2/NF exhibits superior electrocatalytic performance and durability for both the HER and electrooxidation of plastic waste polylactic acid (PLA). Overpotentials of 202 mV (cathodic) and 288 mV (anodic) are observed at a current density of 100 mA cm−2 in an alkaline electrolyte. Moreover, PLA oxidation that suppresses the OER also addresses the safety concern of gas crossover in water electrolysis. Our work thus provides a promising pathway for low-cost, high efficiency, and stable production of green hydrogen assisted by electroreforming of plastic waste. Nanyang Technological University Submitted/Accepted version This work was supported by Nanyang Technological University (Grant No. NTU-ACE2021-02). 2023-01-16T02:42:35Z 2023-01-16T02:42:35Z 2022 Journal Article Li, Y., Zhao, Y., Hu, Z., Wang, Z., Li, H. & Gao, P. (2022). A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation. Journal of Materials Chemistry A, 10(38), 20446-20452. https://dx.doi.org/10.1039/D2TA04286J 2050-7488 https://hdl.handle.net/10356/164270 10.1039/D2TA04286J 38 10 20446 20452 en NTU-ACE2021-02 Journal of Materials Chemistry A © 2022 The Royal Society of Chemistry. All rights reserved. This paper was published in Journal of Materials Chemistry A and is made available with permission of The Royal Society of Chemistry. application/pdf |
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Engineering::Mechanical engineering Electrocatalysts Bifunctional Catalysts Li, Ying Zhao, Yunxing Hu, Zhao Wang, Zilei Li, Hong Gao, Pingqi A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
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Despite the tremendous advances of electrocatalysts for the hydrogen and oxygen evolution reactions (HER/OER), there are few reports on bifunctional catalysts for the HER and plastic electroreforming. Herein, we present a facile hydrothermal and selenization treatment to fabricate cobalt selenide nanosheets on nickel foam (0.1-CoSe2/NF) as a bifunctional catalyst for plastic-electroreforming assisted water electrolysis. Benefiting from its large specific surface area, abundant active sites, high conductivity and 3D porous structure, 0.1-CoSe2/NF exhibits superior electrocatalytic performance and durability for both the HER and electrooxidation of plastic waste polylactic acid (PLA). Overpotentials of 202 mV (cathodic) and 288 mV (anodic) are observed at a current density of 100 mA cm−2 in an alkaline electrolyte. Moreover, PLA oxidation that suppresses the OER also addresses the safety concern of gas crossover in water electrolysis. Our work thus provides a promising pathway for low-cost, high efficiency, and stable production of green hydrogen assisted by electroreforming of plastic waste. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Li, Ying Zhao, Yunxing Hu, Zhao Wang, Zilei Li, Hong Gao, Pingqi |
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Article |
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Li, Ying Zhao, Yunxing Hu, Zhao Wang, Zilei Li, Hong Gao, Pingqi |
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Li, Ying |
title |
A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
title_short |
A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
title_full |
A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
title_fullStr |
A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
title_full_unstemmed |
A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
title_sort |
bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation |
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2023 |
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https://hdl.handle.net/10356/164270 |
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1756370559173656576 |