THE CHARACTERISTICS OF SYNTHESIZED POTASSIUM HEXATITANATE AND THE MANUFACTURING PROCESS OF THE MATRIX

The characteristics of synthesized potassium hexatitanate (K2O . 6TiO( 2)) and the manufacturing process of the matrix for an alkaline fuel c ell were studied. Potassium hexatitanate was synthesized by sintering a mixture of K2CO3 and TiO2 at 850 degrees C, and the thin film type m atrix was manufactured with polytetrafluoroethylene (PTFE) as the bind er. The highest wettability, 50%, was obtained for the matrix manufact ured using 12 h ball-milled powder containing 10 wt.% PTFE, and it als o showed good mechanical properties. The matrix made using K2O . 6TiO( 2) whiskers showed 165% wettability. The wettability, bubble pressure and porosity of the matrix made using a 1:2 powder:whisker mixture wer e 140%, 220 mmHg and 62%, respectively.