PROJECT TITLE :
Urea-assisted combustion synthesis of porous Li1.2Ni0.13Co0.13Mn0.54O2 microspheres as high-performance lithium-ion battery cathodes
An initial urea-assisted combustion and subsequent high-temperature crystallisation route are used to organize porous Li1.2Ni0.13Co0.13Mn0.54O2 microspheres. The as obtained microspheres with the size of 2–four μm are composed of numerous nanoparticles, and these nanoparticles with clear corner and edge have the dimensions of a hundred–200 nm. A possible formation process of porous microspheres structures is discussed. As lithium-ion battery cathodes, the porous microspheres can deliver an initial discharge capability of 252.3 mAh g−one with high Coulombic potency of eighty.half dozenpercent at current density of twenty mA g−one, and keep a stable discharge capacity of 115.5 mAh g−1 at 1000 mA g−one. Although the sample obtained while not urea only deliver a discharge capacity of 66.seven mAh g−one at one thousand mA g−one. Maybe, the facile urea-assisted combustion route is suitable for the synthesis of lithium-wealthy layered oxides as lithium-ion battery cathodes.
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