Dicyandiamide-assisted synthesis of N-doped porous CoMn–Nx@N–C carbon nanotube compositesviaMOFs as efficient trifunctional electrocatalysts in the same electrolyte

Abstract

The development of low-cost, long-term stability, good oxygen reversible catalytic reaction (ORR/OER) and hydrogen evolution (HER) activity under same electrolyte concentration of electrocatalytic materials has an important role in the...

Trifunctional electrocatalysts based on a bimetallic nanoalloy and nitrogen-doped carbon with brush-like heterostructure

“…(4) N-doped carbon layerwrapped FeCo nanoparticles can prevent the metal core from aggregation and corrosion, leading to enhanced catalyst stability. 8,48 As it is well established that catalysts with simultaneously high ORR/OER performances are of great interest in developing rechargeable Zn-air batteries, we evaluate the bifunctional performance of FeCoNC-NB. The value of ΔE ORR/OER is calculated from the potential difference between the ORR E 1/2 value and the OER potential at 10 mA cm −2 with lower ΔE ORR/OER values indicating better bifunctional ORR/OER performances.…”

“…(4) N-doped carbon layer-wrapped FeCo nanoparticles can prevent the metal core from aggregation and corrosion, leading to enhanced catalyst stability. 8,48…”

“…[5][6][7] Thus, developing nonprecious metal-based catalysts that can simultaneously facilitate trifunctional ORR/OER/HER processes proves worthwhile owing to their ease of fabrication, time/cost saving, and support of sustainable energy storage/conversion technologies. 8 Nonprecious transition metal-nitrogen-carbon materials have been well-explored as promising candidates for ORR/ OER/HER catalysts. [9][10][11][12] Among the nonprecious transition metals, Co-based catalysts are stated to be near the peak of OER/HER volcano plots, indicating their highly efficient and competitive OER/HER activity.…”

“…5–7 Thus, developing nonprecious metal-based catalysts that can simultaneously facilitate trifunctional ORR/OER/HER processes proves worthwhile owing to their ease of fabrication, time/cost saving, and support of sustainable energy storage/conversion technologies. 8…”

Bamboo-like nitrogen-doped carbon supported chlorine-doped Fe2P as an antibacterial oxygen reduction catalyst

“…14 The formation of a CNT structure resulted from the synergistic effect of carbon layer edges curling and nanoparticle migration during high-temperature carbonization. 15 In the Raman spectra, the G band represented graphitized carbon, while the D band indicated the presence of defect carbon atoms. Owing to the incorporation of CNTs and significant abundance of the graphitic carbon structure, Cl-Fe 2 P/NC exhibited a low relative strength ( I D / I G ) value of 1.18 compared to other samples (Fig.…”