One-pot synthesis of aluminum oxide coating and aluminum doping on lithium manganese oxide nanoparticles for high performance energy storage system

LiMn2O4 Cathode Materials with Excellent Performances by Synergistic Enhancement of Double-Cation (Na+, Mg2+) Doping and 3DG Coating for Power Lithium-Ion Batteries

“…As shown in Figure 3b,c, the binding energies that appeared at 1071.48 and 1303.48 eV are in accordance with the characteristic photoelectron binding energy of Na 1s and Mg 1s elements, respectively. For the Li 0.94 Na 0.06 Mg 0.08 Mn 1.92 O 4 sample (Figure 3d), the binding energy located at ∼642.4 and ∼654.1 eV corresponded to Mn 2p 3/2 and Mn 2p 1/2 , respectively, 8,23 and the peak areas of Mn 3+ and Mn 4+ by fitting the two characteristic peaks were 34.29 and 65.71%, respectively. Similarly, for the LiMn 2 O 4 sample (Figure 3e), the peak areas of Mn 3+ and Mn 4+ are 50.08 and 49.92%, respectively.…”

“…In addition, it has the characteristics of low cost, easy synthesis, high safety, and high capacity. Therefore, in the field of plug-in hybrid power, LiMn 2 O 4 plays an indispensable role as the backbone. − However, the rapid capacity decay restricts its application on a large scale. In recent years, many efforts have been made by researchers to improve its electrochemical performance, such as bulk doping , and surface coating. − For example, the LiMg 0.06 Mn 1.94 O 4 cathode material synthesized by the solid-phase combustion method had improved electrochemical performances, its initial discharge specific capacity was 101.9 mAh/g, and the capacity retention rate was 81.25% after 500 cycles at 1C.…”

“…8 were thoroughly mixed in deionized water and put into a 200 mL Teflon-lined stainless steel autoclave at a temperature of 130 °C for 15 h, followed by naturally cooling to room temperature. After sufficient filtration, washing, and drying process, a hollow thorny spherical MnO 2 precursor was achieved.2.3.…”

Improved cycling stability of V2O5 modified spinel LiMn2O4 cathode at high cut‐off voltage for lithium‐ion batteries

“…The price of cobalt is projected to rise dramatically as the demand continues to expand 5 . Contrarily, spinel lithium manganese oxide (LiMn 2 O 4 ) has been considered as the most promising cathode electrode contender because of its simplicity of preparation, cost effective, plentiful manganese supplies, non‐toxicity, and environmental‐friendly element 6,7 …”

“…5 Contrarily, spinel lithium manganese oxide (LiMn 2 O 4 ) has been considered as the most promising cathode electrode contender because of its simplicity of preparation, cost effective, plentiful manganese supplies, non-toxicity, and environmental-friendly element. 6,7 LiMn 2 O 4 cathode material is normally operated at the voltage range of 3.0−4.3 V versus Li/Li + . 8 However, in attempt to improve the energy density of LiMn 2 O 4 cathode material, the upper cut-off voltage limit has been lifted.…”