Fabrication Of Nickel Nanopowders Via Reductant And Additive Control In Wet Chemical Methods

초록

Nickel nanopowders, known for their excellent electrical conductivity and oxidation resistance, are essential in industries such as electronics and energy storage. As internal electrode materials in MLCCs (Multilayer Ceramic Capacitors), they play a key role in achieving high capacity and miniaturization. Conventional processes like PVD and CVD produce high-purity nickel powders but face challenges such as broad particle size distribution and high production costs. Wet chemistry offers a cost-effective and efficient alternative, enabling precise particle size control and reduced agglomeration. This study presents optimized key process variables of a wet chemical method, including reducing agents, additives, and precursor concentrations, to evaluate their effects on particle size, purity, and carbon content. The synthesized nanopowders were characterized using SEM, PSA, XRD, and ICP-OES. Results confirmed the feasibility of producing high-purity and low-carbon nickel nanopowders suitable for MLCC applications. © European Powder Metallurgy Association (EPMA)