Characterization Methods for Performance and Safety Enhancement of Battery Materials

S. Patel, G. Mount and I. Mowat
Evans Analytical Group, US

Keywords: battery, lithium, analysis, characterization, element, molecular, surface, bulk, impurity

Summary:

In this work we show how various surface analysis techniques can allow high performance battery material to be characterized and provide valuable insight into the material properties. We shows data from techniques such as XPS, TOF-SIMS, Auger and SIMS. We also show how bulk analysis techniques can be used to control raw material quality (impurity levels) during the manufacturing process. We measure impurity levels from various cathode and anode films and demonstrate techniques that are able to measure small fluctuations in impurity levels. We use standard techniques such as ICP-OES (inductively coupled plasma – optical emission spectrometry), and also use more specialized techniques, that are new to the industry, such as GDMS (glow discharge mass spectrometry) to measure impurity levels.