Cobalt-free Li-rich high-capacity cathode material for lithium-ion cells synthesized through sol–gel method and its electrochemical performance

Lithium-Rich Li1.17Ni0.17Co0.17Mn0.5O2 Cathode Material for Lithium-Ion Cells: Effect of Calcination Temperature on Electrochemical Performance

“…There are two regions observed in the initial charge curve: a sloping voltage region below 4.5 V and a long voltage plateau above 4.5 V. According to earlier findings from other groups, the sloping region below 4.5 V results from the oxidation of Co 3+ to Co 4+ and Ni 2+ to Ni 4+ , while the extended plateau between 4.5 and 4.8 V is caused by the simultaneous release of Li + ions and O 2− ions (in the form of Li 2 O). 40 As shown in Figure 5a, the initial discharge capacities were 220.8, 240.9, and 231.4 mAhg −1 for NCMO-900, NCMO-950, and NCMO-1000, respectively. Among the samples, the NCMO-950 sample showed the highest discharge capacity (240.9 mAhg −1 ).…”

A comparative study of aqueous- and non-aqueous-processed Li-rich Li1.5Ni0.25Mn0.75O2.5 cathodes for advanced lithium-ion cells

“…Moreover, the well-separated adjacent reections (006)/(012) and (018)/(110) in the XRD pattern conrm the well-crystalline layered structure of LNMO material. [27][28][29] SEM characterization was carried out to study the surface morphology of the LNMO sample. The SEM images indicate that the LNMO powder is made of nanoporous polyhedral particles.…”

Opportunities and Challenges of Layered Lithium-Rich Manganese-Based Cathode Materials for High Energy Density Lithium-Ion Batteries

“…The modification methods of lithium-rich manganese cathode materials mainly include precipitation method, , solid phase method, sol–gel method, and hydrothermal method. , With the continuous improvement of the modification technology, new coating technologies have gradually matured. These include ALD (atomic layer deposition) and MLD (molecular layer deposition).…”