Chemical Imaging of Cathode–Electrolyte Interphase in Sulfide Solid-State Batteries
Source abstract
Abstract
The cathode–electrolyte interphase critically impacts the performance of solid-state batteries, yet its chemical evolution remains poorly understood, especially in sulfide systems. Here, we employ scanning transmission X-ray microscopy (STXM) to directly map the NMC–argyrodite interphase. We show that sulfide oxidation primarily occurs at the electrolyte surrounding the NMC particles, while the bulk electrolyte remains electrochemically stable. This interfacial oxidation, accompanied by Ni reduction, leads to the formation of P 2 S x, S 0, and SO x 2– species at interphase. Our results provide direct evidence of cathode–electrolyte interactions and elucidate interfacial degradation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical and Computer Engineering, and Texas Center for Superconductivity at the University of Houston
University of Houston
Nissan ARC LTD., 1 Natsushima-cho, Yokosuka, Kanagawa 2370061, Japan
Department of Chemical and Biomolecular Engineering
IMSS, KEK, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan
SR center, Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu City, Shiga 5258577, Japan
Energy Storage Research Alliance, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
Funding
Basic Energy Sciences
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