LPS STRUCTURAL ANALYSIS WITH AIRTIGHT HOLDER

Introduction

Li₇P₃S₁₁(LPS) is a sulfide-type solid electrolyte that is expected to be a high-performance electrolyte due to high electroconductivity. One of the challenges with LPS is that it must be analyzed in an inert atmosphere as it reacts with moisture in the air to hydrogenate the sulfide. Therefore, an airtight sample holder was developed that allows easy filling and sealing in a glove box prior to analysis. The measured XRD data (shown below) was collected on the same LPS sample over a period of three days after mounting in the airtight holder. All the measured diffraction profiles are essentially the same. The airtight sample holder is a good choice for LPS analysis and can be used for any materials that react with components in the air.