Two-phase interface in LiMnPO4 nanoplates

Enhanced electrochemical performance of LiMnPO 4 /C prepared by microwave-assisted solvothermal method

“…In comparison to LiMnPO 4 /C prepared by hydrothermal/ solvothermal methods, only a few groups [19,26,34,35] achieved a reversible capacity over 130 mAhÁg À1 at 0.1C and 110 mAhÁg À1 at 1C; rather, most of them are below the results achieved in the current work [15][16][22][23][24][27][28][29][30]. A traditional hydrothermal/ solvothermal reaction requires 10-24 h to complete the reaction.…”

“…Among these adopted methods, hydrothermal [15][16][17][18][19][20][21][22] and solvothermal [23][24][25][26][27][28][29][30][31][32][33][34][35] methods have been widely investigated because it is easy to control the morphology and minimize the particle size. Dokko [15] prepared LiMnPO 4 /C by the hydrothermal method at 190 C for 12 h. The prepared samples exhibited 135 mAhÁg À1 at 0.01C.…”

Density functional theory study of lithium diffusion at the interface between olivine-type LiFePO4and LiMnPO4

“…The volume of the FePO4 is increased by about 5% upon lithium intercalation, and this strain can facilitate the diffusion of Li at the interface between the FePO4 and LiFePO4 [39]. The same phenomenon was also observed in the lithiation process of MnPO4 [49]. It was reported that the tensile strain induces the increase of Li ion mobility because the larger space induced by the volume expansion allows the Li ion to migrate easily, whereas the compressive strain causes the decrease of Li ion mobility [50].…”

High rate capability and cycle performance of Ce-doped LiMnPO 4 /C via an efficient solvothermal synthesis in water/diethylene glycol system

“…During the deintercalation process, Mn 2+ will be oxidized to Mn 3+ (with a smaller radius), which will cause the lattice collapse and consequently limit lithium ion diffusion [25]. The large volume contraction (10 %) [26] from LiMnPO 4 to MnPO 4 in the above process will cause a larger strain at the phase interface, which results in the increased activation energy for Li + insertion/extraction and the decreased kinetics for Li + diffusion. However, the larger radius of Ce 3+ contributes to weakening the severe volume change between LiMnPO 4 and MnPO 4 .…”