A　key　component　in　the　molten　carbonate　fuel　cell　(MCFC)　is　electrolyte　matrix,　which　provides　both　ionic　conduction　and　gas　sealing.　The　aim　of　this　work　is　to　investigate　the　effects　of　selected　operating　conditions　on　the　performance　of　the　matrix　preparation.　Slurries　were　prepared　to　produce　matrices　by　the　technique　of　tape　casting.　The　characteristics　of　the　slurries　and　matrices　were　examined　by　laser　particle　size　analyzer,　scanning　electron　microscopy,　and　BET　surface　area　analyzer.　The　testing　results　revealed　that　a　slurry　composition　with　40wt.%　lithium　aluminate　was　the　optimal　formulation　to　produce　a　good　matrix　with　a　pore　size　distribution　of　0.1-0.4　mu　m　and　porosity　of　50　vol.%.　Coarse　and　fine　LiAlO2　particles　were　added　in　the　matrix　slurry　to　enhance　the　mechanical　strength.　Several　green　sheets　were　heated　and　pressed　to　enhance　the　bulk　density　to　get　a　dense　matrix　of　MCFC.　Finally,　a　single　MCFC　was　assembled　and　tested.　The　testing　results　showed　the　matrix　with　40%　solid　loading　gave　the　maximum　discharge　current　of　20A　at　0.56V.