An amorphous/nanocrystalline Ni<sub><i>x</i></sub>P/Ni heterojunction for electrooxidation of hydrazine

Liu, Jiafu; He, Wen; Zhang, Zengyao; Wang, Ping

doi:10.1039/d3ta01866k

Cited by 10 publications

(2 citation statements)

References 50 publications

(57 reference statements)

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“…The particles were heated to different degrees owing to the different sizes of the copper particles and variations in their distribution; this temperature gradient had a limiting influence on the melting behavior. [ 38 ]…”

Section: Resultsmentioning

confidence: 99%

A Composite of Polyether Ether Ketone and Silica‐Coated Copper Particles for Creating Tailored Conductive Tracks via Laser Printing

Schnettger,

Holländer,

Maier

2023

Macro Materials & Eng

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Conventional substrates for optoelectronic systems include inorganic or organic carrier materials; however, these systems are typically subjected to environmentally harmful multistep processes to prepare printed circuit boards. To mitigate these issues, the present article reports a polyether ether ketone (PEEK)‐based composite densely filled with copper microparticles, prepared using a simple, cost‐effective, and sustainable synthesis method. The material exhibits high thermal conductivity but is electrically nonconductive prior to undergoing laser treatment. To prevent the composite from exhibiting electrical conductivity, the copper particles are coated with a thin silica layer through a sol–gel reaction. The thermal stability of PEEK and the Cu–PEEK composites with Cu contents of up to 70 vol%, which are prepared via heat melding, is investigated by thermogravimetric analysis, differential scanning calorimetry, and Fourier‐transform infrared spectroscopy to clarify the manner in which copper affects the chemical structure of the polymer. The developed composite exhibits a significantly higher thermal conductivity than that of the unfilled PEEK polymer. This paper also describes the effects of laser treatment on the surface morphology. Overall, this study suggests that conductive tracks with low electrical resistance can be created on electrically insulating substrates with high thermal conductivity.

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Section: Resultsmentioning

confidence: 99%

A Composite of Polyether Ether Ketone and Silica‐Coated Copper Particles for Creating Tailored Conductive Tracks via Laser Printing

Schnettger,

Holländer,

Maier

2023

Macro Materials & Eng

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“…Wang et al constructed a heterojunction catalyst composed of amorphous Ni x P and crystalline Ni nanoparticles to catalyze HzOR in alkali by using a one-step electrodeposition method (Figure 6a, b). [33] The amorphous/ nanocrystalline Ni x P/Ni heterojunctions they synthesized have abundant and distinct grain boundaries and demonstrate the existence of Ni nanocrystals in face-centered cubic (fcc) form (Figure 6c-e). Benefitting from the abundance of amorphouscrystalline interface and adjustable electronic structure, the heterojunction catalyst shows the best HzOR performance and can still maintain good activity after 1000 cycles (Figure 6f, g).…”

Section: Small Molecule Oxidation Reactionmentioning

confidence: 99%

Application of Amorphous‐Crystalline Coupling Materials in Electrocatalysis

Wang,

Yu,

et al. 2024

ChemPhysChem

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Interface engineering has proven to be a highly efficient strategy for modulating the physicochemical properties of electrocatalysts and further enhancing their electrochemical performance in related energy applications. In this context, the newly proposed crystalline‐amorphous (c‐a) heterostructures with unusual atomic arrangements at interfaces show strong competitiveness. Nonetheless, few efforts have been made to reveal and summarize the structure‐activity relationship at the two‐phase interface and the corresponding electrocatalytic mechanism. This concept is devoted to comprehensively discussing the fundamental characteristics of crystalline‐amorphous electrocatalysts and their application in the field of energy conversion with typical examples. In addition, the development prospects and opportunities of crystalline‐amorphous heterostructure are summarized to provide potential development directions for other types of clean energy development.

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Triphasic Ni₂P–Ni₁₂P₅–Ru with Amorphous Interface Engineering Promoted by Co Nano‐Surface for Efficient Water Splitting

Malhotra,

Nguyen,

Tran

et al. 2024

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This research designs a triphasic Ni2P–Ni12P5–Ru heterostructure with amorphous interface engineering strongly coupled by a cobalt nano‐surface (Co@NimPn–Ru) to form a hierarchical 3D interconnected architecture. The Co@NimPn–Ru material promotes unique reactivities toward hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. The material delivers an overpotential of 30 mV for HER at 10 mA cm−2 and 320 mV for OER at 50 mA cm−2 in freshwater. The electrolyzer cell derived from Co@NimPn–Ru(+,−) requires a small cell voltage of only 1.43 V in alkaline freshwater or 1.44 V in natural seawater to produce 10 mA cm−2 at a working temperature of 80 °C, along with high performance retention after 76 h. The solar energy‐powered electrolyzer system also shows a prospective solar‐to‐hydrogen conversion efficiency and sufficient durability, confirming its good potential for economic and sustainable hydrogen production. The results are ascribed to the synergistic effects by an exclusive combination of multi‐phasic crystalline Ni2P, Ni12P5, and Ru clusters in presence of amorphous phosphate interface attached onto cobalt nano‐surface, thereby producing rich exposed active sites with optimized free energy and multi open channels for rapid charge transfer and ion diffusion to promote the reaction kinetics.

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An amorphous/nanocrystalline Ni_xP/Ni heterojunction for electrooxidation of hydrazine

Abstract: Transition metal phosphides have emerged as leading candidates for the anode applications of direct hydrazine fuel cell (DHzFC). But most recent studies have focused on single-phase crystalline phosphides, leaving multi-phase...

Cited by 10 publications

References 50 publications

A Composite of Polyether Ether Ketone and Silica‐Coated Copper Particles for Creating Tailored Conductive Tracks via Laser Printing

A Composite of Polyether Ether Ketone and Silica‐Coated Copper Particles for Creating Tailored Conductive Tracks via Laser Printing

Application of Amorphous‐Crystalline Coupling Materials in Electrocatalysis

Triphasic Ni₂P–Ni₁₂P₅–Ru with Amorphous Interface Engineering Promoted by Co Nano‐Surface for Efficient Water Splitting

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An amorphous/nanocrystalline NixP/Ni heterojunction for electrooxidation of hydrazine

Abstract: Transition metal phosphides have emerged as leading candidates for the anode applications of direct hydrazine fuel cell (DHzFC). But most recent studies have focused on single-phase crystalline phosphides, leaving multi-phase...

Cited by 10 publications

References 50 publications

A Composite of Polyether Ether Ketone and Silica‐Coated Copper Particles for Creating Tailored Conductive Tracks via Laser Printing

A Composite of Polyether Ether Ketone and Silica‐Coated Copper Particles for Creating Tailored Conductive Tracks via Laser Printing

Application of Amorphous‐Crystalline Coupling Materials in Electrocatalysis

Triphasic Ni2P–Ni12P5–Ru with Amorphous Interface Engineering Promoted by Co Nano‐Surface for Efficient Water Splitting

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An amorphous/nanocrystalline Ni_xP/Ni heterojunction for electrooxidation of hydrazine

Triphasic Ni₂P–Ni₁₂P₅–Ru with Amorphous Interface Engineering Promoted by Co Nano‐Surface for Efficient Water Splitting