In order to analyze the decomposition mechanism of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC treatment electrolyte caused by Li2CO3 and LiOH impurities, Li2CO3 powder or LiOH powder was mixed with carbonate solvent (mixed solvent of EC, DMC and EMC). The effects of addition of LiPF6, H2O and HF on gas production were tested. The results showed that if only the carbonate solvent was used, neither Li2CO3, nor LiOH, nor even the metal Li would cause solvent decomposition to produce gas.
However, if 1M LiPF6 is added into the solvent of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC treatment, significant gas production of Li2CO3 and LiOH can be observed. Adding H2O in the solvent does not cause gas production of Li2CO3. However, the gas production of LiOH and metal Li increased significantly. The gas production of Li2CO3, LiOH and metal Li appeared obviously after HF was added into the solvent.
In the previous test, it was believed that H2O was the necessary factor to cause the gas production of the battery, and H2O caused the decomposition of LiPF6 and produced HF, which led to a series of subsequent decomposition reactions, resulting in the gas production of the battery. However, it shows that gas can also be produced in the presence of only LiPF6, suggesting that this may be because trace water already exists in the electrolyte of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC treatment, and even trace water can induce the reaction shown in the following equation.
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