Li_2+xMnSi_1−xAl_xO₄/C nanoparticles for high capacity lithium-ion battery cathode applications

Abstract

Li2+xMnSi1−xAlxO4/C (0 < x < 0.09) nanoparticles were synthesized and exhibited higher theoretical capacity and better electrochemical properties than Li2MnSiO4/C nanoparticles.

Exploring ion migration in Li2MnSiO4 for Li-ion batteries through strain effects

“…Research suggests that carbon-Li 2 MnSiO 4 exhibited a stable discharge behavior and improved electrochemical performance. 12,13 Al, Ga, Fe, Cr, V, etc. have been doped to the Li 2 MnSiO 4 material, [14][15][16][17] and these dopants play an active role in improving the electrochemical properties in some cases.…”

β-FeOOH nanorods enriched with bulk chloride as lithium-ion battery cathodes

“…As listed in Table 1 in the discharge capacity of sample A might result from the enlarged β-FeOOH cell volumes, which expand the transfer channels and facilitate Li + ions diffusion [5]. Moreover, sample A is mainly β-FeOOH nanorods, which have smaller size and higher surface area than β-FeOOH flakes (sample B).…”

“…To date, various materials including polyanionic compounds [2][3][4][5], layered [6] and spinel [7] metal oxides have been prepared as the substitute for LiCoO 2 . Among these materials, LiFePO 4 [8,9] and LiMn 2 O 4 [10,11] have been well studied and used in some commercial cells, but the low theoretical specific capacity (LiFePO 4 : 170 mAh g -1 ; LiMn 2 O 4 : 148 mAh g -1 ) limits their application.…”

Synthesis of La-doped Li2MnSiO4 nano-particle with high-capacity via polyol-assisted hydrothermal method

“…So far, only several metal ion doping (Mg 2+ [9], Fe 2+ [10], Al 3+ [11] and Cr 3+ [12]) in Li 2 MnSiO 4 have been reported. Gummow et al claimed that introducing Mg 2+ into Li 2 MnSiO 4 could not only lower the preparation temperature through solid state reaction route but also stabilize the P2 1 /n polymorph of Li 2 MnSiO 4 [9].…”

“…Both the above-mentioned drawbacks restrict its application. Enormous efforts have been made to improve its electrochemical property, such as particle size minimization [8], substitution [9][10][11][12] and carbon coating [13].…”