Preparation of porous Ni–YSZ cermet anodes for solid oxide fuel cells by high frequency induction heated sintering

Ni–YSZ cermet anodes for solid oxide fuel cells were successfully prepared by high frequency induction heated sintering, producing a uniformly porous microstructure without abnormal grain growth found in the conventional sintering method. All sintering processes commenced below 1150 °C and finished within 2 min. The rupture strength and electrical conductivity of the sample sintered by high frequency induction heated sintering without addition of a pore former were over 180 MPa and about 2000 S cm− 1 at 800 °C, respectively.

► Sintering process finished within 2 min and below 1150 °C.
► Microstructure can be controlled without significant grain growth.
► The samples sintered by HFIHS show high strength and electrical conductivity.