Influence of Mo addition on the structural and electrochemical performance of Ni-rich cathode material for lithium-ion batteries
Tahir Sattar, Seung‐Hwan Lee, Bong‐Soo Jin, Hyun‐Soo Kim
Abstract
Abstract Molybdenum modified LiNi 0.84 Co 0.11 Mn 0.05 O 2 cathode with different doping concentrations (0–5 wt.%) is successfully prepared and its electrochemical performances are investigated. It is demonstrated that molybdenum in LiNi 0.84 Co 0.11 Mn 0.05 O 2 has a positive effect on structural stability and extraordinary electrochemical performances, including improved long-term cycling and high-rate capability. Among all samples, the 1 wt. % molybdenum LiNi 0.84 Co 0.11 Mn 0.05 O 2 delivers superior initial discharge capacity of 205 mAh g −1 (0.1 C), cycling stability of 89.5% (0.5 C) and rate capability of 165 mAh g −1 (2 C) compared to those of others. Therefore, we can conclude that the 1 wt. % molybdenum is an effective strategy for Ni-rich LiNi 0.84 Co 0.11 Mn 0.05 O 2 cathode used in lithium ion batteries.