Host–Guest Structure Enabling Electrocatalytic Hydrogen Evolution Performance by POM@TM-BDC Composites DOI

Binghe Yang,

Lige Gong, Hongtao Cui

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Developing economical, efficient, and earth-rich electrocatalysts for hydrogen evolution reaction (HER) is quite challenging ideal. We propose that [P2W18O62]6– as the guest, due to its excellent reversible 18 electron-transfer capacity redox properties, then TM-BDC (TM = Ni, Co, Fe, BDC 1,4-benzene-dicarboxylate) host make packaged not escape porous structure. Benefiting from strong redox-competent interactions between structures of full exposure abundant active sites, three {P2W18}@TM-BDC composites exhibited HER activity, with {P2W18}@Ni-BDC requiring 198 mV (overpotentials) 104 mV/dec (Tafel slope) HER. More importantly, show stability, voltage remaining nearly constant 24 h. Meanwhile, linear sweep voltammetry (LSV) electrochemical impedance spectroscopy (EIS) curves overlap well initial curve after stability test. Our work offers a promising strategy synthesizing high-performance broadens scope nonprecious metal composite material preparation.

Language: Английский

Host–Guest Structure Enabling Electrocatalytic Hydrogen Evolution Performance by POM@TM-BDC Composites DOI

Binghe Yang,

Lige Gong, Hongtao Cui

et al.

Langmuir, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Developing economical, efficient, and earth-rich electrocatalysts for hydrogen evolution reaction (HER) is quite challenging ideal. We propose that [P2W18O62]6– as the guest, due to its excellent reversible 18 electron-transfer capacity redox properties, then TM-BDC (TM = Ni, Co, Fe, BDC 1,4-benzene-dicarboxylate) host make packaged not escape porous structure. Benefiting from strong redox-competent interactions between structures of full exposure abundant active sites, three {P2W18}@TM-BDC composites exhibited HER activity, with {P2W18}@Ni-BDC requiring 198 mV (overpotentials) 104 mV/dec (Tafel slope) HER. More importantly, show stability, voltage remaining nearly constant 24 h. Meanwhile, linear sweep voltammetry (LSV) electrochemical impedance spectroscopy (EIS) curves overlap well initial curve after stability test. Our work offers a promising strategy synthesizing high-performance broadens scope nonprecious metal composite material preparation.

Language: Английский

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