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In-situ XPS: Investigating Stable Interfaces for Improved Solid-State Battery Performance

[/vc_column_text][/vc_column][vc_column width=”1/4″][button size=”large” style=”white” target=”_self” hover_type=”default” font_weight=”500″ text_align=”center” text=”Request application note” link=”https://www.stinstruments.com/applications/energy/request-application-note-in-situ-xps-investigating-stable-interfaces-for-improved-solid-state-battery-performance/” background_color=”#eb6209″ border_radius=”6″][button size=”small” style=”white” target=”_self” hover_type=”default” font_weight=”500″ text_align=”center” text=”Product” background_color=”#eb6209″ border_radius=”6″ link=”https://www.stinstruments.com/chemical-analysis/surface-analysis/x-ray-photoelectron-spectroscopy-xps/”][button size=”small” style=”white” target=”_self” hover_type=”default” font_weight=”500″ text_align=”left” text=”Brochure” background_color=”#eb6209″ border_radius=”6″ link=”https://www.stinstruments.com/chemical-analysis/surface-analysis/x-ray-photoelectron-spectroscopy-xps/genesis/request-brochure-genesis/”][/vc_column][/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_single_image image=”21867″ img_size=”large” alignment=”center” qode_css_animation=””][/vc_column][/vc_row][vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text]The development of solid-state batteries (SSBs) has gained significant attention due to their potential for enhanced safety and energy density compared to traditional lithium-ion batteries (LIBs). SSB performance is greatly affected by the stability of interfaces throughout the battery cell, which vary depending on the materials chosen for the cathode, electrolyte/separator, and anode. Lithium metal anodes can achieve excellent performance but are expensive and highly reactive, leading to unwanted reactions at the solid electrolyte (SE)/electrode interface that can impact long-term performance. It is therefore critical to design electrolytes with high ionic conductivity/Li⁺ transport, a wide electrochemical operating window, and stable interfaces.

Composite solid electrolytes (SEs) comprised of polymer matrices, inorganic fillers, and Li salts offer better performance compared to single-solid-state electrolytes, but incomplete understanding of external/internal interface stability has hindered their practical use in SSBs. In these materials, Li⁺ transport is governed by organic/inorganic interfaces within the SE and at the interface formed between the SE and neighboring electrode, which also governs long-term performance. 

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