Abstract
Thin and bendable magnesium aluminate, (MgAl2O4)-based porous ceramic membrane (PCM) was prepared with poly (vinylidene fluoride–hexafluoropropylene) (PVdF-HFP) as binder. The physical properties such as thermal stability, tensile strength, porosity and electrolyte uptake of the membranes were measured. The electrochemical studies like effective ionic conductivity, lithium transference number and compatibility with lithium metal anode were also carried out. The porous ceramic membrane was found to be dimensionally stable even at 135°C. Finally, a 2032-type coin cell composed of Li/PCM/LiFePO4 was assembled and its cycling profile was analyzed at 0.1 and 1C rates. A stable cycling was achieved at 1-C rate, which qualifies the membrane for lithium-ion battery applications.
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