TY - JOUR
T1 - Engineering active sites on binary metal selenide heterointerface catalyst to boost urea electrooxidation
AU - Boakye, Felix Ofori
AU - Sendeku, Marshet Getaye
AU - Kumar, Anuj
AU - Ajmal, Saira
AU - Owusu, Kwadwo Asare
AU - Ibrahim, Kassa Belay
AU - Tabish, Mohammad
AU - Zaman, Fakhr uz
AU - Mushtaq, Muhammad Asim
AU - Alotaibi, Khalid M.
AU - Ansari, Mohd Zahid
AU - Yasin, Ghulam
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/9/5
Y1 - 2024/9/5
N2 - Electrocatalytic urea oxidation reaction (UOR) with a low thermodynamic potential is a perfect substitute for anodic oxygen evolution process (OER) in the effective generation of hydrogen. However, because of the slow kinetics of UOR, its potential application for commercial use remains untapped. Nickel-based materials may be an option for urea oxidation reaction but the heavily filled d orbital prevents enhanced adsorption and activity. Here, taking into account the adsorption-energy scaling limitations, Co3+ with partially filled d orbital is introduced into nickel selenide to form a heterointerface catalyst (2D CoSe2/Ni0.85Se) that enhances UOR. As anticipated, the 2D CoSe2/Ni0.85Se electrode displays a low potential of 1.33 V to achieve 100 mA cm−2 for UOR while retaining strong durability for 300 h. Further, 2D CoSe2/Ni0.85Se catalyst is used as an anode in an anion exchange membrane flow electrolyzer, which achieved an industrial-level voltage of 1.91 V at 1 A cm−2 and robust durability.
AB - Electrocatalytic urea oxidation reaction (UOR) with a low thermodynamic potential is a perfect substitute for anodic oxygen evolution process (OER) in the effective generation of hydrogen. However, because of the slow kinetics of UOR, its potential application for commercial use remains untapped. Nickel-based materials may be an option for urea oxidation reaction but the heavily filled d orbital prevents enhanced adsorption and activity. Here, taking into account the adsorption-energy scaling limitations, Co3+ with partially filled d orbital is introduced into nickel selenide to form a heterointerface catalyst (2D CoSe2/Ni0.85Se) that enhances UOR. As anticipated, the 2D CoSe2/Ni0.85Se electrode displays a low potential of 1.33 V to achieve 100 mA cm−2 for UOR while retaining strong durability for 300 h. Further, 2D CoSe2/Ni0.85Se catalyst is used as an anode in an anion exchange membrane flow electrolyzer, which achieved an industrial-level voltage of 1.91 V at 1 A cm−2 and robust durability.
KW - 2D CoSe/NiSe
KW - Dual metal cations
KW - Electronic coupling
KW - Heterointerface catalyst
KW - Urea oxidation reaction
UR - https://www.scopus.com/pages/publications/85189531195
U2 - 10.1016/j.apcatb.2024.124013
DO - 10.1016/j.apcatb.2024.124013
M3 - Article
AN - SCOPUS:85189531195
SN - 0926-3373
VL - 352
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 124013
ER -