In situ Ni and ex-situ NiO(Li) cathodes were fabricated by cold pressing using Ni powder and Li2CO3(in case of ex-situ cathode) with paraffin wax as a binder. The effects of compaction pressure, amount of binder, and sintering temperature on porosity, the average size of pore, Li+ cation fraction, and the fracture strength were investigated in this study. The optimum compaction pressure was 100kg/cm2 to prevent the brittleness and stress concentration caused by high compaction pressure. Also, 10wt%. To obtain reasonably high electric conductivity in ex-situ cathode, the sintering temperature was chosen to be below 950℃ to maintain the cation fraction of Li+ is in the range of 0.02-0.06. In terms of the Ni-dissolution rate, ex-situ cathode was more efficient than in-situ cathode in the long-term operation except the initial 24hr period.
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