Formation method of lithium metal battery and manufacturing method of lithium metal battery
A technology of lithium metal battery and chemical formation method, which is applied in the manufacture of electrolyte batteries, charging/discharging of secondary batteries, secondary batteries, etc., which can solve the problems of serious swelling, low battery capacity, poor cycle performance, etc., and reduce volume expansion , simple process, improved cycle performance
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Embodiment 1
[0031]A method for inhibiting the expansion of lithium metal batteries includes the following steps:
[0032]1) Put the liquid-filled and sealed lithium metal battery in an environment of 45°C for 24 hours of high-temperature aging, then take it out, and leave it at room temperature for 30 minutes;
[0033]2) Carry out the first stage of charging the lithium metal battery after standing (that is, the aforementioned first charging stage, the same below): first charge with a constant current of 0.02C for 30h to 4.0V, and then charge with a constant current of 0.1C to 4.3 V, after switching to constant voltage 4.3V and charging for 5h, the cut-off current of charging is 0.05C;
[0034]After being left for 5 minutes, proceed to the second discharge stage (the aforementioned discharge stage, hereinafter referred to as the discharge stage): discharge to 3.4V at a current of 2C;
[0035]After being left for 2h, proceed to the third stage of charging (that is, the aforementioned second charging stage, ...
Embodiment 2
[0038]A method for inhibiting the expansion of lithium metal batteries includes the following steps:
[0039]1) Put the liquid-filled and sealed lithium metal battery in an environment of 45°C for 24 hours of high-temperature aging, then take it out, and leave it at room temperature for 30 minutes;
[0040]2) Carry out the first stage of charging the lithium metal battery after standing: first charge with a constant current of 0.01C for 50h to 4.1V, then charge with a constant current of 0.2C to 4.3V, then transfer to a constant voltage of 4.3V for 2h, The cut-off current for charging is 0.01C;
[0041]After being left for 5 minutes, proceed to the discharge stage: discharge to 3.0V at a current of 2C;
[0042]After being left for 2h, proceed to the third stage of charging: first charge with a constant current of 0.2C for 5h to 4.3V, then transfer to a constant voltage of 4.3V for 2h, the charge cut-off current is 0.05C;
[0043]3) The lithium metal battery after the chemical conversion treatment ...
Embodiment 3
[0045]A method for inhibiting the expansion of lithium metal batteries includes the following steps:
[0046]1) Put the liquid-filled and sealed lithium metal battery in an environment of 50°C for 24 hours of high-temperature aging, then take it out, and leave it at room temperature for 40 minutes;
[0047]2) Carry out the first stage charging of the lithium metal battery after standing: first charge with a constant current of 0.05C for 15h to 4.1V, then charge with a constant current of 0.2C to 4.2V, then transfer to constant voltage 4.2V for 2h, The cut-off current for charging is 0.01C;
[0048]After leaving it for 5 minutes, proceed to the discharge stage: discharge to 3.4V with a current of 3C;
[0049]After being left for 2h, proceed to the third stage of charging: first charge with a constant current of 0.5C for 5h to 4.2V, then switch to constant voltage 4.2V for 2h, and the charge cut-off current is 0.05C;
[0050]3) The lithium metal battery after chemical conversion treatment is allowed...
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