Method for synthesizing LiCoxMn2-xO4 as anode material of lithium-ion secondary battery
A secondary battery and synthesis method technology, applied in battery electrodes, electrode manufacturing, electrode heat treatment, etc., can solve problems such as poor cycle performance
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Embodiment 1
[0019] LiOH-H 2 O and manganese dioxide are mixed according to the ratio of Li:Mn=1:2 (atomic ratio), the mixture is put into a crucible, placed in flowing air at 450°C for 9 hours, ground after cooling, and then heated at 800°C Keep warm for 30 hours, grind and sieve the product and make a battery according to the above ratio for charge and discharge test. The voltage range is 4.20-3.15V, and the charge and discharge rate is 0.5C, as shown in Figure 1. Specific capacity (mAh / g) and cycle times the curve shown.
Embodiment 2
[0021] LiOH-H 2 O, electrolytic manganese dioxide (EMD) and Co 3 o 4 Mix according to the ratio of Li:Mn:Co=1:(2-x):x (atomic ratio), put the mixture into a crucible, pretreat it in flowing air at 450°C for 9 hours, grind it after cooling, and then put it in Keep warm at 800°C for 30 hours, grind and sieve the product and make a battery according to the above ratio for charge and discharge test. The voltage range is 4.20-3.15V, and the charge and discharge rate is 0.5C, as shown in Figure 2. Specific capacity (mAh / g) and cycle The curves shown by the times.
Embodiment 3
[0023] LiOH-H 2 O, manganese trioxide (Mn 2 o 3 ) and Co 3 o 4 Mix according to the ratio of Li:Mn:Co=1:(2-x):x (atomic ratio), put the mixture into a crucible, pretreat it in flowing air at 450°C for 9 hours, grind it after cooling, and then put it in Keep warm at 800°C for 30 hours, grind and sieve the product and make a battery according to the above ratio for charge and discharge test. The voltage range is 4.20-3.15V, and the charge and discharge rate is 0.5C, as shown in Figure 3. Specific capacity (mAh / g) and cycle The curves shown by the times.
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