Anode material for sodium-ion battery, preparation method thereof and method for increasing air stability
A sodium-ion battery, air stability technology, applied in the fields of energy materials and electrochemical power sources, can solve the problems of rising cost of assembling batteries, unstable materials, etc., to reduce the distance, improve the degree of delocalization, and improve the antioxidant capacity. Effect
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Embodiment 1
[0030] (1) Preparation of 5% copper, 10% tin doped NaNi 0.45 mn 0.4 Cu 0.05 sn 0.1 o 2 Cathode material.
[0031] Accurately weigh the corresponding proportion of Na 2 CO 3 , NiO, Mn 2 o 3 , CuO, SnO 2 Ball milled for 24 hours, pressed into a disc with a diameter of 14mm under a pressure of 10MPa, and calcined at 1000°C for 12 hours to obtain a black powder.
[0032] (2) Preparation of NaNi doped with 5% copper and 10% tin 0.45 mn 0.4 Cu 0.05 sn 0.1 o 2 Composite cathode
[0033] The positive electrode material prepared above is mixed with Super P and binder polyvinylidene fluoride at a mass ratio of 0.7:0.2:0.1, and the solvent N-methylpyrrolidone is added, and it is obtained by pulping, smearing, drying and other processes. Composite positive electrode.
[0034] (3) Assembling sodium-ion batteries
[0035] The composite positive electrode prepared above is assembled with the sodium negative electrode into a sodium ion battery, and the electrolyte is selected...
Embodiment 2
[0039] (1) Preparation of 5% copper-doped, 10% titanium-doped NaNi 0.45 mn 0.4 Cu 0.05 Ti 0.1 o 2 Cathode material (raw material is Na 2 CO 3 , NiO, Mn 2 o 3 , CuO, TiO 2 , and all the other steps are the same as in Example 1)
[0040] (2) Preparation of NaNi doped with 5% copper and 10% titanium 0.45 mn 0.4 Cu 0.05 Ti 0.1 o 2 Composite positive electrode (the specific steps are the same as in Example 1).
[0041] (3) Assemble the sodium ion battery (the specific steps are the same as in Example 1).
[0042] (4) Sodium ion battery test (the specific steps are the same as in Example 1).
Embodiment 3
[0044] (1) Preparation of 15% copper, 20% titanium doped NaNi 0.35 mn 0.3 Cu 0.15 Ti 0.2 o 2 Cathode material (raw material is Na 2 CO 3 , NiO, Mn 2 o 3 , CuO, TiO 2 , all the other steps are with embodiment 1).
[0045] (2) Preparation of NaNi doped with 15% copper and 20% titanium 0.35 mn 0.3 Cu 0.15 Ti 0.2 o 2 Composite positive electrode (the specific steps are the same as in Example 1).
[0046] (3) Assemble the sodium ion battery (the specific steps are the same as in Example 1).
[0047] (4) Sodium ion battery test (the specific steps are the same as in Example 1).
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