Understanding the Role of NH4F and Al2O3 Surface Co-modification on Lithium-Excess Layered Oxide Li1.2Ni0.2Mn0.6O2
In this work we prepared Li1. 2Ni0. 2Mn0. 6O2 (LNMO) using a hydroxide co-precipitation
method and investigated the effect of co-modification with NH4F and Al2O3. After surface co-
modification, the first cycle Coulombic efficiency of Li1. 2Ni0. 2Mn0. 6O2 improved from
82.7% to 87.5%, and the reversible discharge capacity improved from 253 to 287 mAh g–1
at C/20. Moreover, the rate capability also increased significantly. A combination of neutron
diffraction (ND), high-resolution transmission electron microscopy (HRTEM), aberration …
method and investigated the effect of co-modification with NH4F and Al2O3. After surface co-
modification, the first cycle Coulombic efficiency of Li1. 2Ni0. 2Mn0. 6O2 improved from
82.7% to 87.5%, and the reversible discharge capacity improved from 253 to 287 mAh g–1
at C/20. Moreover, the rate capability also increased significantly. A combination of neutron
diffraction (ND), high-resolution transmission electron microscopy (HRTEM), aberration …
[引用][C] Understanding the Role of NH4F and Al2O3 Surface Co-modification on Lithium-Excess Layered Oxide Li1. 2Ni0. 2Mn0. 6O2
L Haodong, Q Danna, Z Minghao, B Loïc, A Ke… - 2015