Influence of Ti substitution on the structure and electrochemical properties of lithium-excess layered manganese based oxide for lithium ion batteries

Effects of Al-dopant at Ni or Co sites in LiNi0.6Co0.3Ti0.1O2 on interlayer slabs (Li–O) and intralayer slabs (TM–O) and their influence on the electrochemical performance of cathode materials

“…These values of binding energy are in agreement with other available literature. 3,29,30 3.4 Electrochemical performance of cathode materials Fig. 7 illustrates the charge-discharge capacity patterns, cyclability and C-rate of LNCT, LCA and LNA cathode materials.…”

“…Smaller atomic distances between Li and O of the LCA sample make the lithiation of Li + ions difficult since it needs more energy to overcome the repulsion from the surrounding electrons compared to that of the LNCT and LNA samples. 3,31 Thus, the Li intercalation process becomes harder due to a higher energy resistance and the continuous loss of Li-ions that resulted in an increase in the capacity loss of the material. In the meantime, LNA cathode materials recorded a lower capacity loss than the LCA sample at only 23.1% aer the 50 th cycle.…”

“…A majority of Li-ion batteries use lithium cobalt dioxide (LiCoO 2 ) as their cathode material. 2,3 The LiCoO 2 cathode has well-ordered layers of crystal structure that makes the lithium extraction/insertion processes faster. For this very reason, LiCoO 2 was proven to yield good performance in the Li-ion battery industries with a theoretical specic capacity of 274 mA h g À1 .…”

Synthesis and electrochemical characterization of Ni- and Ti-substituted Li2MnO3 positive electrode material using coprecipitation–hydrothermal–calcination method

“…Substitution of Ti for Mn was attempted, but it failed to improve the electrochemical properties because the Li 2 TiO 3 component is electrochemically inactive [12,13]. However, recent studies show small Ti-substituted Li 2 MnO 3 -based solid solution has better electrochemical cycle performance than that for non-substituted one because of the suppression of Mndissolution [14,15].…”

Spinel‐layered Li2MnTiO4+z cathode material for Li‐ion batteries prepared by a sol‐gel method

“…[9,10] For example, Zhao et al substituted Ti for Mn in 0.5Li2MnO3-0.5LiNi1/2Mn1/2O2, resulting in improving the performance of the cathode material by suppressing transition metal ions dissolution during cycling. [11] Thackeray et al also reported that Ti substituted Mn and Ni in Li(Mn0.46Ni0.46Ti0.05Li0.02)O2 improve capacity as well as cycling stability compared with undoped sample. [12] However, these studies reported the substitution of Ti for Mn at a low content.…”