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Title: A bifunctional catalyst of ultrathin cobalt selenide nanosheets for plastic-electroreforming-assisted green hydrogen generation
Authors: Li, Ying
Zhao, Yunxing
Hu, Zhao
Wang, Zilei
Li, Hong
Gao, Pingqi
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: 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.
Project: NTU-ACE2021-02
Journal: Journal of Materials Chemistry A
Abstract: 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.
ISSN: 2050-7488
DOI: 10.1039/D2TA04286J
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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