▎ 摘　　要

NOVELTY - Producing dielectric ceramic comprises mixing graphene oxide precursor and amphoteric-metal oxide nanoparticles (I) by stirring to obtain amphoteric metal oxide/graphene oxide composite, mixing the composite and dielectric ceramic particles, and sintering. The dielectric ceramic is barium titanate, lead titanate or lead zirconate. The nanoparticles have diameter of 1-50 nm. USE - The dielectric ceramic is useful in multilayer ceramic capacitor of gas sensor (claimed). ADVANTAGE - The method is simple and economical, and improves reliability and sintering properties of base dielectric ceramics. The multilayer ceramic capacitor has high reliability even in a sinter environment having a reducing atmosphere by placing zwitterions on graphene oxide at the grain boundary. DETAILED DESCRIPTION - Producing dielectric ceramic comprises mixing graphene oxide precursor and amphoteric-metal oxide nanoparticles of formula (MxOy) (I) by stirring to obtain amphoteric metal oxide/graphene oxide composite, mixing the composite and dielectric ceramic particles, and sintering. M=Eu, Dy, Tb, Sm, La, Ce, Y, Gd, Er, Nd, or Pr; and x/y=1-2.