Atomically dispersed Co/Ni dual sites embedded in nitrogen-doped graphene for boosting oxygen evolution

Abstract

Exploring durable, inexpensive and high-activity electrocatalysts for efficient water oxidation is the difficulty of the current research. Transition metal single-atom catalysts (SACs) have been widely studied as economical electrocatalysts. However,...

Comprehensive enhancement in electrocatalytic oxygen evolution performance of nickel and cobalt complexes derived from π-conjugated N-heterocyclic carbene ligands through carbon composite strategy

“…Further, cobalt complex 9 achieved a η 100 of 524 mV vs. RHE, while complex 8 failed to show the same in the working potential window. The observed overpotential values are comparable to that of the recently reported Co-SA/NG ( η 50 : 412 mV vs. RHE) 34 and FeCo 2 O 4 ( η 50 : 393 mV vs. RHE) 35 materials for OER activity, while the present compounds were found to be more active in comparison with Co(OH) 2 ( η 10 : 480 mV vs. RHE) and Fe 3 O 4 ( η 10 : 540 mV vs. RHE) 36 materials for the same application.…”

Ru Single-Atom Nanoarchitectonics on Co-Based Conducting Metal–Organic Frameworks for Enhanced Oxygen Evolution Reaction

“…1,2 Hydrogen is a clean energy carrier due to its high usage rate and environmental friendliness. 3,4 Electrocatalytic water splitting is a competitive technology for the production of green hydrogen due to the direct integration of electrolysis with clean and low-cost energy sources. 5,6 However, oxygen evolution reaction (OER), as an important half-reaction of electrocatalytic water splitting, seriously restricts the efficiency owing to its slow kinetic and complex multielectron transfer process.…”

“…The increasing consumption of fossil fuels and the deterioration of the living environment are driving people to explore eco-friendly and sustainable energy sources as alternatives to traditional fossil fuel. , Hydrogen is a clean energy carrier due to its high usage rate and environmental friendliness. , Electrocatalytic water splitting is a competitive technology for the production of green hydrogen due to the direct integration of electrolysis with clean and low-cost energy sources. , However, oxygen evolution reaction (OER), as an important half-reaction of electrocatalytic water splitting, seriously restricts the efficiency owing to its slow kinetic and complex multielectron transfer process. − Therefore, the development of efficient and stable OER catalysts is essential for improving the efficiency of electrocatalytic water splitting.…”