Facile hydrothermal synthesis and electrochemical properties of orthorhombic LiMnO₂cathode materials for rechargeable lithium batteries

Abstract

Pure-phase and aluminum-doped orthorhombic LiMnO2 (o-LiMnO2) samples of high discharge capacity and cyclic stability are prepared by a simple one-step hydrothermal reaction with low Li/Mn molar ratio. Mixing LiMn2O4 and doping aluminum improve the electrochemical performance of o-LiMnO2.

Recent advances in metal nitrides as high-performance electrode materials for energy storage devices

“…Until recently, carbon and carbon based materials, [9][10][11][12][13] metal oxides, [14][15][16][17] nitrides, 18,19 carbides, [20][21][22][23] and their composites [24][25][26][27] have been employed as anode materials for LIBs. With respect to cathode materials, Almost all the research and commercialization has centered on the layered compounds with an anion close-packed or almost close-packed lattice like LiCoO 2 , 28,29 LiMnO 2 , 30,31 and transition-metal phosphates, such as olivine LiFePO 4 . 32,33 In SCs, carbonaceous materials, conducting polymers, metal oxides and composites of these aforementioned materials are the common electrode materials that have been employed extensively.…”

Hydrothermal Synthesis of Li2MnO3-Stabilized LiMnO2 as a Cathode Material for Li-Ion Battery

“…During cycling, the capacity contribution in the 4 V region increases, resulting in an increase in the overall capacity. After 5 cycles, the cathode could deliver a capacity of 265 mAh g -1 , which is higher than those reported in the literature [20,[32][33][34][35][36][37]. The dQ/dV plot (Figure 4(b)) shows peaks that correspond to the plateaus observed in Figure 4(a).…”

A simple and facile one-step strategy to synthesize orthorhombic LiMnO2 nano-particles with excellent electrochemical performance

“…However, too much lithium source was used and the electrochemical performance of the obtained product was not investigated. In addition, Chen et al [20] have reported that the pure-phase LiMnO 2 with good electrochemical performance were prepared by one-step hydrothermal reaction of MnCl 2 , EDTA, LiOH, and NaClO solutions. It's important to note, however, that the preparation procedure needs additional complexant EDTA and the raw material NaClO is very corrosive, which may do harm to our body.…”