In this paper, a new plasma spray technology working in low pressure condition has been successfully applied to deposit Li-x(Ni,Co)(y)O-2 catalyst/electrode layers for low-temperature solid oxide fuel cells (LT-SOFCs). The low pressure induced distinctive phenomena were illustrated for presenting the characteristics and advances of such coating technique. Micro-nano crystalline microstructure was generated on the plasma sprayed coatings simultaneously with phase transformation taking place. To study the effect of high temperature on such catalyst material, sintering experiments were carried out at 600-1000 degrees C. The results show that the ratio of x/y decreased when increasing temperature and sintering time because of the degradation of Li from Li-x(Ni,Co)(y)O-2 phase. The catalytic property and stability of the Li-x(Ni,Co)(y)O-2 at various temperatures were also discussed. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.