| 초록 |
Ni-rich based cathode materials have been researched owing to high capacity and low cost. But also Ni-rich based cathode materials have some disadvantages in synthesis method. Li(Ni0.8Co0.15Al0.05)O2 could be synthesized in various ways, such as sol-gel, solid state, and co-precipitation. Generally, it needs long residence time, total reaction time and non-uniform morphology to synthesis NCA co-precipitation of hydroxide-type precursor. To solve this problem, we studied co-precipitation of carbonate-type precursor, so we could decrease residence time and total reaction time by half compare to hydroxide co-precipitation achieving reasonable capacity and rate. Capacity of Li(Ni0.8Co0.15Al0.05)O2 used carbonate co-precipitation was 183mAh/g and capacity retention rate at 5C vs 1C was 85%. At the same time, it shows advantages such as uniform particle size distribution and fast particle growth to hydroxide precursor. |
