FeNiP nanoparticle/N,P dual-doped carbon composite as a trifunctional catalyst towards high-performance zinc–air batteries and overall water electrolysis

Abstract

The composite catalyst with a novel construction of bimetallic phosphide FeNiP nanoparticles embedded in N, P double-doped carbon matrix was prepared. It was demonstrated to be a trifunctional catalyst that...

Hypercrosslinked polymer-mediated fabrication of binary metal phosphide decorated spherical carbon as an efficient and durable bifunctional electrocatalyst for rechargeable Zn–air batteries

“…The increase of I D / I G signifies a higher defect degree in FeCoP/NPC, suggesting a favorable ORR catalytic reactivity. 27…”

“…The increase of I D /I G signifies a higher defect degree in FeCoP/ NPC, suggesting a favorable ORR catalytic reactivity. 27 N 2 adsorption/desorption experiments are employed to investigate the porous structures of the as-synthesized samples. The Brunauer-Emmett-Teller (BET) surface area and pore volume of FeCoP/NPC are calculated to be 619 m 2 g −1 and 0.58 cm 3 g −1 , respectively (Fig.…”

Self-Supported FeNiP Nanosheet Arrays as a Robust Bifunctional Electrocatalyst for Water Splitting

“…Kang et al prepared bifunctional NiFeP@C by a three-step approach containing sol–gel, drying, and reduction processes, which exhibited overpotentials of 160 and 260 mV for the HER and OER at 10 mA·cm –2 , respectively . Chen et al prepared a novel composite catalyst of FeNiP nanoparticles embedded in the N,P dual-doped carbon matrix via impregnation and subsequent calcination, which exhibited overpotentials of 280 and 285 mV at a current density of 10 mA·cm –2 in alkaline and acidic media, respectively …”

“…26 Chen et al prepared a novel composite catalyst of FeNiP nanoparticles embedded in the N,P dual-doped carbon matrix via impregnation and subsequent calcination, which exhibited overpotentials of 280 and 285 mV at a current density of 10 mA•cm −2 in alkaline and acidic media, respectively. 27 Motivated by the above concerns, a facile and inexpensive approach containing consecutive immersion at room temperature and subsequent phosphating treatment was adopted to fabricate self-supported FeNiP on a NF (FeNiP@NF). The immersion process involved an in situ oxidative etching reaction driven by different electrochemical potentials between the two substances.…”

Bimetallic Sulfides Embedded in a Boron Modulated Carbon Matrix as the Bifunctional Catalyst with a Low Oxygen Evolution Reaction Overpotential for an Advanced Zinc-Air Battery

“…The combination of transition metal-based OER catalysts with carbon-based ORR catalysts is an effective strategy to build high performance bifunctional catalysts. − However, the Fenton-like reactions catalyzed by transition metal elements (including Fe, Co, Ni, Mn, Cu, etc.) inevitably generate strong oxidizing •OH active radicals during OER and ORR processes. − During the OER process, the high potential and generated •OH synergistically achieve a stronger oxidization for severely decomposing the substances inside ZABs. − This will widen the charge–discharge voltage difference and also dramatically affect the cycle stability of zinc-air batteries.…”