| 초록 |
A higher Ni content with less cobalt usage of LiNixCo0.1Mn0.1O2, (x = 0.6-0.9) cathode materials provides higher energy density in LIBs. However, severe Li/Ni mixing exhibit poor cycling stability. Cation doping effectively suppresses the mixing of Ni ions in the lithium layer of LiNixCo0.1Mn0.1O2. Here, we investigate the effects of different cationic dopants such as Zr4+, Zn2+, Ca2+, Mg2+, and Al3+ in the Li layer, preventing degradation in the LiNi0.8−yCo0.1Mn0.1DyO2 (y = 0.033) cathode material for LIBs using density functional theory. The pillared systems doped with Zr4+- and Ca2+- in LiNi0.8−yCo0.1Mn0.1DyO2 act as better pillar-ions due to their high suppression energy of “Ni3+-ion migration”. |
