Synthesis of Nanostructured Li[Ni_1/3Co_1/3Mn_1/3]O₂ via a Modified Carbonate Process

Abstract

Li[Ni1/3Co1/3Mn1/3]O2 synthesized via the modified carbonate process showed a homogeneous particle distribution with 10-μm secondary particles. Higher discharge capacity was retained even at 10 C (2800 mA g-1). This superior high rate capability would be mainly due to the well-controlled synthesis process, thus the morphology and its effects on electrochemical properties are significantly reproducible.

An improved carbonate co-precipitation method for the preparation of spherical Li[Ni1/3Co1/3Mn1/3]O2 cathode material

“…2(a), the Li[Ni 1/3 Co 1/3 Mn 1/3 ]O 2 powder prepared by the improved carbonate co-precipitation method has a spherical morphology, and the secondary particle is composed of small primary particles. The morphology of the prepared sample is similar to previous reports [13]. By contrast, the sample prepared by the conventional carbonate co-precipitation method ( Fig.…”

“…This results in the spherical Li Fig. 6., The capacity retention after fifty charge-discharge cycles of prepared by the improved carbonate co-precipitation was 162 mAh g −1 and 96.6% of the initial discharge capacity was retained after 50 charge-discharge cycling, which is a little better than previous reports [13].…”

“…Mn(OH) 2 can easily be oxidized to MnOOH or MnO 2 after it segregated from the mixed transition-metal hydroxide [12]. The oxidation states of the transition metals are kept constant (equal to 2) by the adoption of the carbonate co-precipitation method in which a homogeneous precursor [Ni 1/3 Co 1/3 Mn 1/3 ]CO 3 is first prepared [13,14]. However, the crystallinity and morphology of the [Ni 1/3 Co 1/3 Mn 1/3 ]CO 3 precursor and the resulting Li[Ni 1/3 Co 1/3 Mn 1/3 ]O 2 product prepared by merely using Na 2 CO 3 as the precipitant are still unsatisfactory.…”

Impact of tripropyl borate on life and impedance of lithium-ion cells

“…capability, better power retention and better capacity retention so that the size of the battery pack can be minimized accordingly. This objective was being approached with several reported strategies including (a) developing advanced electrode materials with better power capability and cycling performance [5][6][7][8];…”

Electrochemical characteristics of LiNi1/3Co1/3Mn1/3O2 powders prepared from microwave-hydrothermally derived precursors

“…It was found that increasing the microwave radiation temperatures raised the retention of LiNi 1/3 Co 1/3 Mn 1/3 O 2 powders at the same cycle. The reason for the increase in retention is that particles with a less-agglomerated morphology would adapt volume changes involving structural transition or intercalation of lithium ions [45]. The coulomb efficiency of SP25, SP100, SP130 and SP180 after 10 cycles is also listed in Table 1.…”