Preparation method of lithium-enriched magnesium-based anode material of lithium ion battery
A technology for lithium-ion batteries and cathode materials, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as low Coulombic efficiency and poor cycle stability, and achieve good cycle performance, high specific capacity, and long service life.
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[0022] Example one
[0023] Preparation of lithium-rich lithium cobalt manganese oxide powder
[0024] Using titanium sheet as the substrate and working electrode, graphite as the counter electrode, and using electrodeposition method to deposit cobalt manganese oxide on the substrate. The electrodeposition solution includes cobalt chloride with a concentration of 0.3 mol / L and a concentration of 0.3 mol / L. Manganese nitrate.
[0025] The obtained cobalt manganese oxide and lithium chloride are miscible in water, so that the concentrations of cobalt manganese oxide and soluble lithium salt are 15g / L and 50g / L, respectively, heated to 260°C, constant temperature for 6h, centrifuged, washed, and dried to obtain Lithium cobalt manganate powder.
[0026] The obtained lithium cobalt manganate powder and lithium chloride are mixed in water, so that the concentration of lithium cobalt manganate and lithium chloride are 10g / L and 40g / L respectively, heated to 260°C, kept at constant tempera...
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[0033] Example two
[0034] Preparation of lithium-rich lithium cobalt manganese oxide powder
[0035] Using titanium sheet as the substrate and working electrode, graphite as the counter electrode, and using electrodeposition method to deposit cobalt manganese oxide on the substrate. The electrodeposition solution includes cobalt chloride with a concentration of 0.5 mol / L and a concentration of 0.5 mol / L. Manganese nitrate.
[0036] The obtained cobalt manganese oxide and lithium chloride are miscible in water, so that the concentrations of cobalt manganese oxide and soluble lithium salt are respectively 30g / L and 80g / L, heated to 300°C, constant temperature for 4h, centrifuged, washed, and dried to obtain Lithium cobalt manganate powder.
[0037] The obtained lithium cobalt manganese oxide powder and lithium chloride are mixed in water to make the concentration of lithium cobalt manganate and lithium chloride 15g / L and 60g / L respectively, heated to 300°C, constant temperature for...
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