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【ECH】用卡爾－費雪滴定法測定電池材料中的水含量

The accurate determination of water content within lithium-ion batteries is of key importance, an excess of water can cause degradation of the electrolyte and leads to the formation of certain by products which significantly lower the lifespan and capacity of the battery, the most prominent form of by-product is hydrofluoric acid. Due to this, the water content within lithium-ion batteries and related battery materials must be kept to a minimum.The most common test for water content within battery materials is via coulometric Karl Fischer titration. Using a coulometric Karl Fischer allows you measure water content to level of 1 part per million. Due to the different elements of the composition of a lithium battery, different sample introduction techniques must be used for different elements.