Cooperative Cobalt-Doped and Carboxylate Anions Modification of NiFe-Layered Double Hydroxides for Improving Oxygen Evolution Reaction DOI
Yitong Liu,

Kaikai Ba,

Peiru Li

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

The disparity of the fast electron-slow proton process significantly hinders catalytic efficiency oxygen evolution reaction (OER) in water splitting, so it is necessary to develop efficient and stable materials mitigate elevated overpotentials. In this study, a one-step hydrothermal approach was utilized synthesize cobalt-doped, carboxylic-acid-modified NiFe-layered double hydroxide (CoNiFe-LDH/NF) catalyst with enhanced intrinsic activity. Introducing Co promotes generation active components, carboxylate anions accelerate transfer, synergistic interaction which endows CoNiFe-LDH/NF superior OER performance. Experimental results show that has an overpotential as low 230 mV at 100 mA cm-2, Tafel slope 38.5 dec-1, excellent stability for 120 h current density 10 cm-2. Furthermore, mechanistic exploration by molecular probe detection pH-dependent experiment showed modified closer lattice oxidation mechanism (LOM). This study provides effective strategy improve performance layered materials.

Language: Английский

Cooperative Cobalt-Doped and Carboxylate Anions Modification of NiFe-Layered Double Hydroxides for Improving Oxygen Evolution Reaction DOI
Yitong Liu,

Kaikai Ba,

Peiru Li

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

The disparity of the fast electron-slow proton process significantly hinders catalytic efficiency oxygen evolution reaction (OER) in water splitting, so it is necessary to develop efficient and stable materials mitigate elevated overpotentials. In this study, a one-step hydrothermal approach was utilized synthesize cobalt-doped, carboxylic-acid-modified NiFe-layered double hydroxide (CoNiFe-LDH/NF) catalyst with enhanced intrinsic activity. Introducing Co promotes generation active components, carboxylate anions accelerate transfer, synergistic interaction which endows CoNiFe-LDH/NF superior OER performance. Experimental results show that has an overpotential as low 230 mV at 100 mA cm-2, Tafel slope 38.5 dec-1, excellent stability for 120 h current density 10 cm-2. Furthermore, mechanistic exploration by molecular probe detection pH-dependent experiment showed modified closer lattice oxidation mechanism (LOM). This study provides effective strategy improve performance layered materials.

Language: Английский

Citations

0