Manufacturing Graphene‐Encapsulated Copper Particles by Chemical Vapor Deposition in a Cold Wall Reactor

Abstract

Functional fillers, such as Ag, are commonly employed for effectively improving the thermal or electrical conductivity in polymer composites. However, a disadvantage of such a strategy is that the cost and performance cannot be balanced simultaneously. Therefore, the drive to find a material with both a cost efficient fabrication process and excellent performance attracts intense research interest. In this work, inspired by the core–shell structure, we developed a facile manufacturing method to prepare graphene‐encapsulated Cu nanoparticles (GCPs) through utilizing an improved chemical vapor deposition (CVD) system with a cold wall reactor. The obtained GCPs could retain their spherical shape and exhibited an outstanding thermal stability up to 179 °C. Owing to the superior thermal conductivity of graphene and excellent oxidation resistance of GCPs, the produced GCPs are practically used in a thermally conductive adhesive (TCA), which commonly consists of Ag as the functional filler. Measurement shows a substantial 74.6 % improvement by partial replacement of Ag with GCPs.

N-Doped few-layer graphene encapsulated Pt-based bimetallic nanoparticles via solution plasma as an efficient oxygen catalyst for the oxygen reduction reaction

“…The synthesis of carbon-encapsulated metal nanoparticles can be conducted by several methods, such as chemical vapour deposition and thermal treatment. 21,22 So far, these methods usually need high temperatures and a multi-step process, which includes the synthesis of metal nanoparticles before the coating of carbon layers. Recently, liquid-phase plasma technology, socalled solution plasma (SP), has been reported that it can simply synthesize bimetallic nanoparticles and carbon-doped with heteroatoms under room temperature and pressure condition.…”

Chemical Vapour Deposition of Graphene—Synthesis, Characterisation, and Applications: A Review

“…Recently, another interesting study was conducted by Chen et al for the first time to encapsulate Cu particles by few layer graphene grown via cold wall CVD [ 92 ]. The synthesis of graphene-encapsulated Cu nanoparticles (GCPs) in their work was inspired by the core–shell structure in order to replace Ag as a functional filler in polymer composites.…”

Li–air battery and ORR activity of nanocarbons produced with good synthesis rate by solution plasma process

“…11,12 Nanocarbons such as carbon black, carbon nanotubes, porous and nonporous carbon materials and graphene have shown large specific surface areas, high conductivity, electrocatalytic activity, mechanical capacity, ultra-light characteristics, and chemical and thermal resistance. [13][14][15][16][17][18] Heteroatom (nitrogen, boron, and phosphorus) doped nanocarbon has shown the higher ORR activity. [19][20][21][22][23] Previously, the nanocarbon materials have been successfully synthesized by catalytic or noncatalytic chemical vapor deposition, pyrolysis, electric arc discharge, and direct-current (DC) discharge plasma from various organic solvents.…”