Synthesis and electrochemical properties of nanostructured LiAIxMn2-xO4-yBry particles



Publication Details

Huang, Y, Jiang, R, Bao, S, Dong, Z, Cao, Y, Jia, DZ & Guo, Z (2009), Synthesis and electrochemical properties of nanostructured LiAIxMn2-xO4-yBry particles, Journal of Solid State Electrochemistry, (13), pp. 799-805.


Nanostructured LiAlxMn2−xO4−yBry particles were synthesized successfully by annealing the mixed precursors, which were prepared by room-temperature solid-state coordination method using lithium acetate, manganese acetate, lithium bromide, aluminum nitrate, citric acid, and polyethylene glycol 400 as starting materials. X-ray diffractometer patterns indicated that the particles of the as-synthesized samples are well-crystallized pure spinel phase. Transmission electron microscopy images showed that the LiAlxMn2−xO4−yBry samples consist of small-sized nanoparticles. The results of galvanostatic cycling tests revealed that the initial discharge capacity of LiAl0.05 Mn1.95O3.95Br0.05 is 119 mAh g−1; after the 100th cycle, its discharge capacity still remains at 92 mAh g−1. The introduction of Al and Br in LiMn2O4 bring a synergetic effect and is quite effective in increasing the capacity and elevating cycling performance.

Please refer to publisher version or contact your library.



Link to publisher version (DOI)