Nanometer lithium zirconate modified lithium iron phosphate composite material and preparation method thereof
作者： Zhou Zhou , Su Shanjin , Wang Xuncai , Zhang Wei , Pang Chengkai
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摘要: The invention provides a preparation method of nanometer lithium zirconate-modified iron phosphate composite material. comprises the steps (1) dissolving cocamidopropyl betaine in water to form solution A; (2) mixing and adding hydrate, ferrous sulfate phosphoric acid mixed liquid B under protection nitrogen atmosphere; (3) themixed into hydrothermal kettle, performing reaction advance obtain middle product C; (4) an aqueous containing polyvinyl pyrrolidone C atmosphere, zirconium nitride excessive amount hydrate E; (5) amiddle F; (6) sorbitan laurate intermediate F, obtaining material after calcination. In material, is used asa core, zirconate layer carbon are sequentially coated from inside outside, discharging capacity specific value 78% or above at -20 DEG 25 C, thecapacity retention ratio circulation for 1,000 times 5C 94% above.
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