title: Co-precipitation synthesis and characterization of NiO-Ce0.8Sm0.2O1.9 nanocomposite powders: effect of precipitation agents.
abstract: NiO-Ce0.8Sm0.2O1.9 (NiO-SDC) nanocomposite powders applied as promising anode material for low-temperature solid oxide fuel cells (SOFCs) were synthesized by hydroxide co-precipitation method using NH3 x H2O, NaOH and NH3 x H2O + NaOH as precipitation agents. The crystal phases, morphologies and sintering behavior of the synthesized NiO-SDC nanocomposite powders were investigated by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) and sintering experiments. The effect of precipitation agents on the synthesis of the NiO-SDC nanocomposite powders was discussed. Results show that different precipitation agents influence greatly the synthesis and characteristics of the NiO-SDC nanocomposite powders. The NiO-SDC nanocomposite powders synthesized with NH3 x H2O deviate from the original composition due to the loss of Ni. The loss of Ni is avoided and nano-sized NiO-SDC composite powders are synthesized, when NaOH and NH3 x H2O + NaOH are used as precipitation agents. The NiO-SDC nanocomposite powders can be synthesized at relatively low temperature using NH3 x H2O + NaOH as precipitation agent, and the synthesized NiO-SDC nanocomposite powders show good sintering characteristics.
authors: Fracture and Reliability Research Institute, Tohoku University, Sendai 980-8579, Japan.
authors: Changsheng
authors: C
authors: Ding
authors: Hongfei
authors: H
authors: Lin
authors: Kazuhisa
authors: K
authors: Sato
authors: Toshiyuki
authors: T
authors: Hashida
mesh_terms: D002563:Cerium / Q000737:chemistry*; D011232:Chemical Precipitation; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods; D009532:Nickel / Q000737:chemistry*; D010316:Particle Size; D011208:Powders; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D011208:Powders; D002563:Cerium; C030583:ceric oxide; D009532:Nickel; C028007:nickel monoxide