Method for synthesizing high-activity layered zinc ion secondary battery positive electrode material by room-temperature one-step method
A secondary battery and positive electrode material technology, applied in secondary batteries, battery electrodes, circuits, etc., can solve the problems of low product purity, complicated process, unsuitable for industrial production, etc., and achieve simple process, high specific capacity, The effect of good crystallinity
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Embodiment 1
[0029] Dissolve 0.5 mol of sodium manganese edetate powder and 2 mol of sodium hydroxide powder in 1L of deionized water, stir until completely dissolved; then mix sodium manganese edetate solution and sodium hydroxide solution At the same time, it was added dropwise into the reactor, fed with air, and stirred at a high speed. The stirring speed was 1500 rpm, and the dropping speed was 1L / h. The reacted suspension was vacuum filtered, washed three times with deionized water and alcohol, and finally placed in a vacuum oven and dried at 80° C. for 10 hours to obtain the expected reaction product.
[0030] figure 1 For the XRD figure of the highly active layered structure manganese oxide that this embodiment makes, as can be seen from the figure, the diffraction peak of material and the standard card (PDF#43-1456) of the manganese oxide of layered structure are very good It matches, indicating that the main component of the synthesized product is manganese oxide, and has a layer...
Embodiment 2
[0033]Dissolve 0.5 mol of sodium manganese edetate powder and 4 mol of sodium hydroxide powder in 1L of deionized water, stir until completely dissolved; then mix sodium manganese edetate solution and sodium hydroxide solution Add it dropwise to the reaction kettle at the same time, feed in air, and stir at a high speed, the stirring speed is 2000 rpm, and the dropping speed is 2L / h. After the dropwise addition, stir for another 2 hours, and keep the continuous feeding of air. The reacted suspension was vacuum filtered, washed three times with deionized water and alcohol, and finally placed in a vacuum oven and dried at 80° C. for 10 hours to obtain the expected reaction product. Adopt the same pole piece process (drawing process) as Example 1 to prepare pole piece, adopt zinc as negative pole, 2.5mol / L zinc chloride is as electrolyte, assemble battery and test, the voltage-specific capacity curve of this battery The test results are as follows Figure 5 As shown, the specifi...
Embodiment 3
[0035] Dissolve 0.5 mol of sodium manganese edetate powder and 3 mol of potassium hydroxide powder in 1L of deionized water, and stir until completely dissolved; then mix sodium manganese edetate solution and potassium hydroxide solution At the same time, it was added dropwise into the reaction kettle, fed with air, and stirred at a high speed. The stirring speed was 1500 rpm, and the dropping speed was 1L / h. The reacted suspension was vacuum filtered, washed three times with deionized water and alcohol, and finally placed in a vacuum oven and dried at 80° C. for 10 hours to obtain the expected reaction product.
[0036] Figure 6 The XRD figure of the highly active layered structure manganese oxide prepared for this example, as can be seen from the figure, the diffraction peak of the material is consistent with the standard card (PDF#86-0666) of another kind of layered structure manganese oxide It is well matched, indicating that the main component of the synthesized product...
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