High rate cycling performance of Li1.05Ni1/3Co1/3Mn1/3O2 materials prepared by sol–gel and co-precipitation methods for lithium-ion batteries

Influence of Li source on tap density and high rate cycling performance of spherical Li[Ni1/3Co1/3Mn1/3]O2 for advanced lithium-ion batteries

“…Similarly, after 100 charge/ discharge cycles at high rate of 5C, the sample prepared from Li 2 CO 3 shows excellent cycling performance with capacity retention ratio of 92% (capacity fading rate is 0.08% per cycle); however, the other samples obtained from LiOH⋅H 2 O, CH 3 COOLi⋅2H 2 O, and LiNO 3 show only 84.5% (capacity fading rate is 0.155% per cycle), 73.2% (capacity fading rate is 0.268% per cycle), and 70.4% capacity retention ratios (capacity fading rate is 0.296% per cycle), respectively. Among the four Li sources used in this work, Li 2 CO 3 appears to be the best Li source for preparation Li[Ni 1/3 Co 1/3 Mn 1/3 ]O 2 with excellent cyclability, and this excellent capacity retention at a high current density is slightly better than previous results obtained for Li [10][11][12]35].…”

“…Among them, Li[Ni 1/3 Co 1/3 Mn 1/3 ]O 2 has been studied extensively as a promising cathode material for lithium-ion batteries as it exhibits much higher capacity, structural stability and enhanced safety [7,8]. However, to replace the commercial LiCoO 2 as a cathode material for advanced lithium ion batteries, which required high energy density and high power density, the tap density and high rate cycling performance of the Li[Ni 1/3 Co 1/3 Mn 1/3 ]O 2 must be further improved [9][10][11][12]. Recently, Li sources have proved to be an important factor in influencing the grain size and rate capability of LiNi 1−y Co y O 2 [13], LiFePO 4 [14] and spinel LiNi 0.5 Mn 1.5 O 4 [15].…”

Synthesis of LiNi1/3Co1/3Al1/3O2 cathode material with eutectic molten salt LiOH-LiNO3

“…The Ni-based ternary cathode material LiNi 1/3 Co 1/3 Mn 1/3 O 2 seems promising for use in applications that require a power supply, e.g., electric vehicles, and has become a particular focus of research due to its high discharge capacity, good thermal stability, and low cost [7][8][9][10][11][12][13].R e c e n t l y , additional reports on Ni-based multi-doped lithium-ion battery cathode materials have been published. Major synthetic methods include the high-temperature solid-phase method, the sol-gel method, the coprecipitation method [14][15][16], and the molten salt method [17,18]. The main doping elements for improving thermal characteristics and cycling performance include cobalt, aluminum, manganese, titanium, magnesium, and gallium.…”

A comparative study on lithium nickel cobalt oxide prepared by different wet chemistry routes

“…This implies that y=0.2 and 0.3 phases give good cycling properties and that an ordered two-dimensional structure of the material enhances the ease of lithium diffusion in the inter-slab spaces. Within this system, LiNi 0.8 Co 0.2 O 2 has been identified as one of the most attractive materials to replace LiCoO 2 [3,[5][6][7]. LiNi 1−y Co y O 2 -based cathode materials are traditionally synthesized by solid-state method at a high temperature over a long processing time, which results in non-homogeneity of the constitute cations, poor stoichiometry control, broad particle size distribution, and impure product with low electrochemical performance [7,8].…”

“…Within this system, LiNi 0.8 Co 0.2 O 2 has been identified as one of the most attractive materials to replace LiCoO 2 [3,[5][6][7]. LiNi 1−y Co y O 2 -based cathode materials are traditionally synthesized by solid-state method at a high temperature over a long processing time, which results in non-homogeneity of the constitute cations, poor stoichiometry control, broad particle size distribution, and impure product with low electrochemical performance [7,8]. Therefore, a number of routes on the basis of wet chemistry have been adopted to produce LiNi 1−y Co y O 2 system, though not hydrothermal synthesis [9][10][11][12][13][14].…”