Enhanced electrochemical performance of O3-type Li0.6[Li0.2Mn0.8]O2 for lithium ion batteries via aluminum and boron dual-doping

Inhibition of oxygen release and stabilization of the bulk structure of lithium-rich layered oxides by strong Mo–O covalent binding

“…This gives the material surface more active sites and promotes the de-embedding of lithium ions. 27 However, when the addition of Mo was too high, a radial structure was formed on the surface of LR-Mo1.5, as shown in Fig. S2 †.…”

Boron‐Based High‐Performance Lithium Batteries: Recent Progress, Challenges, and Perspectives

“…Reproduced with permission. [76] Copyright 2021, Elsevier. c) Schematic diagram of phosphorus-and-boron-codoped carbon coating over LNMO.…”

“…As shown in Figure 5a, LMR-AB delivers a capacity of 189.3 mAh g −1 and has the highest capacity retention of 89.12% at a rate of 1 C after 100 cycles. Huang et al [76] proposed an aluminum and boron codoping strategy to improve the structural stability and electrochemical properties of Li 0.6 [Li 0.2 Mn 0.8 ]O 2 (LLM), where aluminum and boron ions randomly occupy octahedral and tetrahedral positions and hinder the migration of manganese ions, thus forming a stable structure and promoting Li-ion migration. Compared with the pristine material, the codoped sample has better electrochemical performance, with an increase in capacity retention from 62.48% to 82.48% after 80 cycles at a rate of 0.1 C, and still provides 226 mAh g −1 in the voltage range of 2-4.8 V (Figure 5b).…”

“…b) Schematic diagram of cycling performance at 0.1 C rate for 80 cycles. Reproduced with permission [76]. Copyright 2021, Elsevier.…”