Movable type printing method to synthesize high-entropy single-atom catalysts

Abstract

The controllable anchoring of multiple isolated metal atoms into a single support exhibits scientific and technological opportunities, while the synthesis of catalysts with multiple single metal atoms remains a challenge and has been rarely reported. Herein, we present a general route for anchoring up to eleven metals as highly dispersed single-atom centers on porous nitride-doped carbon supports with the developed movable type printing method, and label them as high-entropy single-atom catalysts. Various high-entropy single-atom catalysts with tunable multicomponent are successfully synthesized with the same method by adjusting only the printing templates and carbonization parameters. To prove utility, quinary high-entropy single-atom catalysts (FeCoNiCuMn) is investigated as oxygen reduction reaction catalyst with much more positive activity and durability than commercial Pt/C catalyst. This work broadens the family of single-atom catalysts and opens a way to investigate highly efficient single-atom catalysts with multiple compositions.

A two-dimensional heterogeneous structured Ni3Se2@MoO3 catalyst for seawater electrolysis

“…99.9%). [1][2][3] Unlike the limited freshwater resources, seawater accounts for approximately 96.5% of the world's water resources, making seawater electrolysis more attractive and desirable. 4 However, the main limiting factor is that the anode undergoes a chloride evolution reaction (CER) which competes with the oxygen evolution reaction (OER) and reduces the efficiency of seawater electrolysis.…”

Heterointerface promoted trifunctional electrocatalysts for all temperature high-performance rechargeable Zn–air batteries

“…According to theoretical and experimental reports, heterointerfaces comprise: (1) Gibb's free energy modifications, (2) regulations for density of states at the Fermi level of the components, (3) abundant active site preferences, (4) interfacial coupling effects and charge transfer, (5) interfacial dislocations and structural discontinuities that induce the surface binding energies by intermediate moieties, and 6. appropriate catalytic kinetics. [28][29][30] Thus, heterointerface engineering has been regarded as a promising strategy for the rational design of electrocatalysts.…”

Stabilizing High Density Cu Active Sites with ZrO2 Quantum Dots as Chemical Ligand in N‐doped Porous Carbon Nanofibers for Efficient ORR

“…Development of stable, efficient, and cost‐effective electrocatalysts for oxygen reduction reaction (ORR) is of prime importance to renewable energy technologies. [ 1,2 ] Replacing the commercial expensive Pt/C catalysts with the emerging metal‐nitrogen‐carbon (MNC) catalyst system is considered to be a feasible way because of their low cost and applicability to the complex four electron transfer process of ORR. [ 3–5 ] The MNC catalysts are generally the integration of Fe, Co, Mn, Cu, or other non‐noble transition metal atoms, ions or nanoparticles (NPs) with N‐doped carbon support, which plays a crucial role in ORR reaction with molecular oxygen.…”

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Development of stable, efficient, and cost-effective electrocatalysts for oxygen reduction reaction (ORR) is of prime importance to renewable energy technologies. [1,2] Replacing the commercial expensive Pt/C catalysts with the emerging metalnitrogen-carbon (MNC) catalyst system is considered to be a feasible way because of their low cost and applicability to the complex four electron transfer process of ORR. [3][4][5] The The emerging transition metal-nitrogen-carbon (MNC) materials are considered as a promising oxygen reduction reaction (ORR) catalyst system to substitute expensive Pt/C catalysts due to their high surface area and potential high catalytic activity.

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