| abstract |
The present invention generally relates to materials for batteries and other applications. For instance, certain embodiments are directed to a positive electroactive material, e.g., for use in a lithium-ion battery. In some embodiments, the material may have the formula LiaMb[NixMnyCoz]1-bO2, where 1.00≤a<1.01, 0<b≤0.08, 0.34<x≤0.58, 0.21≤y≤0.38, and 0.21≤z≤0.38. In some cases, the material may have a D50 ranging from 4.0 to 7.8 micrometers, a tap density from 2.00 to 2.40 g/cm3, and/or a discharge capacity of ranging from 74.0% to 80.3% at a 30 C current rate (vs. the capacity obtained at 0.1 C). Methods for preparing or using the various Pt materials and formulations, as well as electrochemical cells containing the material, are also described in various embodiments. In some cases, the materials may be formed from relatively small particle sizes, which may lead to improved performance. In addition, in some cases, such materials may be able to repeatedly withstand high rate charging and discharging, without a major loss of performance. |