Fluorine doping of spherical spinel LiMnO

Improving the electrochemical performance of LiMn2O4/graphite batteries using LiF additive during fabrication

“…It follows that the additive LiF not only improves the initial capacity, but also can improve the cycling performance of the spinel manganese battery. This result was not achieved in previous reports [13][14][15][16][17][18]. This is a salient result for the practical use of the LiMn 2 O 4 battery, although the capacity retention ratio is only enhanced by about 2% after 100 cycles.…”

“…Recently, metal ions and F − co-substitution or F − substitution were studied to improve the electrochemical performance of LiMn 2 O 4 . The cycling performance was improved, but the initial capacity was a little lower [13][14][15][16][17][18], but they did not study the storage performance of the LiMn 2 O 4 battery. Thus it is necessary to enhance the initial capacity, capacity retaining ratio after cycling, and the capacity recovery ratio after storage through other methods.…”

Charge/discharge characteristics of sulfur composite electrode at different temperature and current density in rechargeable lithium batteries

“…At 60°C, the discharge capacity is 854 mAh g −1 , which is bigger than that at 25°C. In contrast with the spinel LiMn 2 O 4 cathode materials, the discharge capacity of the spinel LiMn 2 O 4 cathode material at elevated temperature is smaller than that at room temperature [13,14], showing that the spinel LiMn 2 O 4 cathode materials have different electrochemical behavior at elevated temperature in contrast with the sulfur composite cathode materials. For the latter, the ionic conductivity increases at elevated temperature, showing the better performance than that at room temperature.…”

Synthesis of spherical LiNi1/3Co1/3Mn1/3O2 cathode materials for Li-ion batteries

“…The spherical spinel LiMn 2 O 4 materials were specially prepared from cheap sulfate as a starting material [13][14][15] and used carbonate as a precursor [16]. This process doping [17][18][19] and surface modification easy [20].…”