Composite doping modification lithium-ion battery anode material and its manufacture method
A technology of lithium ion battery and positive electrode material is applied in the field of composite doping modified lithium ion battery positive electrode material and its preparation, which can solve the problem of reducing the volume specific energy and volume specific power of the material, affecting the electrical properties of the material, reducing the true density of the material, etc. To achieve the effect of strengthening ionic conductivity and electronic conductivity, enhancing electronic conductivity and improving ionic conductivity
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Embodiment 1
[0027] The first step is to mix 1mol lithium nitrate, 1mol phosphoric acid, 0.995mol ferrous acetate, 0.005mol yttrium acetate and 36.0g glucose, use 144.0g ethanol as a dispersant, and mix evenly through high-speed ball milling;
[0028] In the second step, the mixed raw materials are placed in a well-type furnace, fed with nitrogen as a protection, heated at 250°C for 20 hours, cooled and ground to obtain PO 4 3- , Li + , Y 2+ , Fe 2+ and carbon black reaction precursor;
[0029] The third step is to put the reaction precursor into the reactor, place it in a well-type furnace, pass through nitrogen as a protection, calcinate at 500°C for 10 hours, and obtain LiFe after cooling with the furnace. 0.995 Y 0.005 PO 4 / C composite doping modified cathode material.
[0030] Adopt above-mentioned composite doping modification positive electrode material to make positive electrode film as positive electrode active material, the composition of positive electrode film is m 活性物...
Embodiment 2
[0032] The first step is to mix 0.5mol lithium carbonate, 1mol diammonium hydrogen phosphate, 0.99mol ferrous oxalate, 0.01mol lanthanum acetate and 8.0g epoxy resin, use 162.0g ethanol as a dispersant, and mix evenly through high-speed ball milling;
[0033] In the second step, the mixed raw materials are placed in a well-type furnace, fed with nitrogen as a protection, heated at 300°C for 10 hours, cooled and ground to obtain PO 4 3- , Li + , La 2+ , Fe 2+ and carbon black reaction precursor;
[0034] The third step is to put the reaction precursor into the reactor, place it in a well-type furnace, pass through nitrogen as a protection, calcinate at 650°C for 24 hours, and obtain LiFe after cooling with the furnace. 0.99 La 0.01 PO 4 / C composite doping modified cathode material.
[0035] Adopt above-mentioned composite doping modification positive electrode material to make positive electrode film as positive electrode active material, the composition of positive ele...
Embodiment 3
[0037] The first step is to mix 0.5mol lithium carbonate, 1mol ammonium phosphate, 0.98mol ferrous acetate, 0.02mol neodymium acetate and 18g cellobiose, use 140.0g ethanol as a dispersant, and mix evenly through high-speed ball milling;
[0038] In the second step, the mixed raw materials are placed in a well-type furnace, protected by nitrogen, heated at 350°C for 5 hours, cooled and ground to obtain PO 4 3- , Li + 、Nd 2+ , Fe 2+ and carbon black reaction precursor;
[0039] The third step is to put the reaction precursor into the reactor, place it in a well-type furnace, pass through nitrogen as a protection, and calcinate at 700°C for 30 hours, and then get LiFe after cooling with the furnace. 0.98 Nd 0.02 PO 4 / C composite doping modified cathode material.
[0040] Adopt above-mentioned composite doping modification positive electrode material to make positive electrode film as positive electrode active material, the composition of positive electrode film is m 活性物...
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