Active material for all-solid-state battery, electrode for all-solid-state battery, and all-solid-state battery
An all-solid battery and active material technology, applied in the direction of active material electrodes, battery electrodes, solid electrolytes, etc., can solve problems such as high resistance and insufficient conductivity
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Embodiment 1
[0205](Production of positive electrode active material for all-solid-state batteries)
[0206] Solution A was prepared by dissolving 0.48 g of 1,5-dihydroxynaphthalene (manufactured by Tokyo Chemical Industry Co., Ltd.) in 100 ml of ethanol. In addition, 0.39 g of 1,3,5-trimethylhexahydro-1,3,5-triazine (manufactured by Tokyo Chemical Industry Co., Ltd.) was dissolved in 100 ml of ethanol to prepare a solution B.
[0207] For solution A, solution B was added dropwise over 10 minutes, and then stirred for 30 minutes. Furthermore, 3.0 g of positive electrode active material particles were added, and reacted at 60° C. for 4 hours while stirring. After the reaction, the solution was filtered, washed with ethanol three times, and vacuum-dried at 100° C. for 3 hours. Moreover, the positive electrode active material (A) for all solid-state batteries was obtained by heating the said dried particle|grains at 550 degreeC for 2 hours.
[0208] It should be noted that, as the positive...
Embodiment 2
[0231] (Production of positive electrode active material for all-solid-state batteries)
[0232] 100 ml of ethanol and 3.0 g of a positive electrode active material were added to a four-neck flask with a capacity of 1 L, and the flask was placed in a thermostat at 70°C. It should be noted that, as the positive electrode active material, lithium cobaltate [LiCoO 2 ] (average particle size 15 μm).
[0233] 1,5-Dihydroxynaphthalene (manufactured by Tokyo Chemical Industry Co., Ltd.) was added to ethanol so as to have a concentration of 0.15 mol / L, to prepare a solution C. Separately, 1,3,5-trimethylhexahydro-1,3,5-triazine (manufactured by Tokyo Chemical Industry Co., Ltd.) was added to ethanol so as to have a concentration of 0.15 mol / L to prepare a solution D.
[0234] After the above-mentioned active substance / ethanol mixed solution reached 70°C, solutions C and D were simultaneously added dropwise into the mixed solution at a rate of 2 ml / min. After 30 minutes, the dropwis...
Embodiment 3
[0241] (Production of negative electrode active material for all-solid-state batteries)
[0242] 0.72 g of 1,5-dihydroxynaphthalene (manufactured by Tokyo Chemical Industry Co., Ltd.), 0.36 g of 40% methylamine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.), and 0.72 g of 37% aqueous formaldehyde (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) were sequentially dissolved. In ethanol, a 300 g ethanol mixed solution was produced.
[0243] Next, 6.0 g of negative electrode active material particles were added to the obtained liquid mixture, and the mixture was reacted at 50° C. for 4 hours while applying ultrasonic waves and stirring simultaneously. After the reaction, the solution was filtered, washed with ethanol three times, and vacuum-dried at 100° C. for 12 hours. In addition, the dried particles were heat-treated at 500° C. for 2 hours in a nitrogen atmosphere to obtain a negative electrode active material (A) for an all-solid battery.
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