Introduction
Lithium-ion batteries (LiBs) are commonly used in electronics, electric vehicles, and energy storage, but their traditional use of organic liquid electrolytes presents safety risks, especially in high-energy-density applications. In response to these challenges, the LiBs industry has focused on developing solid electrolytes, which offer greater stability, high ionic conductivity, and improved mechanical properties. As a key part of solid-state batteries, solid electrolytes play a crucial role in determining battery performance, including power density, safety, high- and low-temperature performance, and service life.
To ensure optimum battery performance, it is necessary to accurately measure the impurity elements in solid-state electrolytes. At present, there is no unified standard for the performance requirements and test methods of solid electrolytes. T/SPSTS 019-2021 standard requires inorganic oxide solid electrolyte impurities to be less than 0.1%.
This work demonstrates the ability of the Avio® 220 Max hybrid simultaneous ICP-OES to deliver accurate impurity measurements in the solid electrolyte lithium alumina titanium phosphate (LATP) below the specified 0.1% limit. This is thanks to its unique double-monochromator optical design coupled to a custom solid-state detector, delivering exceptional sensitivity.
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