Method for preparing spinel type lithium battery positive electrode ceramic material based on interface regulation and control
A spinel-type, ceramic material technology, applied in the direction of positive electrodes, battery electrodes, active material electrodes, etc., can solve the problems of reduced specific energy of the battery cell, reduced battery safety, and reduced proportion of positive active materials, achieving cost reduction Low, improved safety and stability, and the effect of uniform material size
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Embodiment 1
[0034] 1. Take by weighing 52.164g manganese dioxide (MnO 2 ), 14.942g nickel oxide (NiO), 9.58g lithium hydroxide (LiOH) material, add 40ml alcohol, put into the ball mill jar and stir for 4-12h;
[0035] 2. Put the above mixed slurry into a vacuum drying oven at 120°C to dry;
[0036] 3. Put the dried material above into a crucible, and pre-sinter at 400°C for 6 hours to obtain a granular material with an octahedral structure;
[0037] 4. Calcinate the pre-sintered material obtained in step 3 at 800°C for 12h, then cool to room temperature, wash, filter, and dry the obtained octahedral spinel ceramic material LiNi 0.5 mn 1.5 o 4 .
Embodiment 2
[0039] 1. Take by weighing 52.164g manganese dioxide (MnO 2 ), 15.98g titanium dioxide (TiO 2 ), 9.58g lithium hydroxide (LiOH) material, add 10ml alcohol, put into the ball mill jar and stir for 4-12h;
[0040] 2. Put the above mixed slurry into a vacuum oven at 120°C to dry;
[0041] 3. Put the dried material above into a crucible, and pre-sinter at 400°C for 6 hours to obtain a granular material with an octahedral structure;
[0042] 4. Calcinate the pre-sintered material obtained in step 3 at 800°C for 12 hours, then cool it to room temperature, wash, filter, and dry the obtained octahedral spinel ceramic material LiTi 0.5 mn 1.5 o 4 .
Embodiment 3
[0044] 1. Take by weighing 73.527g manganese acetate tetrahydrate ((CH 3 COO) 2 Mn.4H 2 O), 24.88g nickel acetate (CH 3 COO) 2 Ni.4H 2 O), 26.396g lithium acetate (CH 3 COOLi), 115.278g citric acid (C 6 h 8 o 7 ) materials were dissolved in deionized water respectively, and were dissolved and stirred;
[0045] 2. Adjust the pH of the above mixed solution to about 6.5, mix and stir for 30 minutes, then heat up to 80°C, stir and evaporate, and then dry in a vacuum oven at 120°C for 24 hours;
[0046] 3. Put the dried material above into a crucible and calcinate at 450°C for 6 hours to obtain a granular material with a polyhedral structure;
[0047] 4. Calcinate the calcined material at 850°C for 24 hours, then wash, filter and dry the obtained material to obtain the spinel-type ceramic material LiNi with polyhedral structure 0.5 mn 1.5 o 4 .
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