Surface/Interface Effects on High-Performance Thin-Film All-Solid-State Li-Ion Batteries
Source abstract
Abstract
The further development of all-solid-state batteries is still limited by the understanding/engineering of the interfaces formed upon cycling. Here, we correlate the morphological, chemical, and electrical changes of the surface of thin-film devices with Al negative electrodes. The stable Al-Li-O alloy formed at the stress-free surface of the electrode causes rapid capacity fade, from 48.0 to 41.5 μAh/cm(2) in two cycles. Surprisingly, the addition of a Cu capping layer is insufficient to prevent the device degradation. Nevertheless, Si electrodes present extremely stable cycling, maintaining >92% of its capacity after 100 cycles, with average Coulombic efficiency of 98%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Sensors and Electron Devices Directorate, US Army Research Laboratory, Adelphi, Maryland 20783, United States
Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
Sandia National Laboratories, Livermore, California 94550, United States
Funding
Laboratory Directed Research and Development · Basic Energy Sciences · A. James Clark School of Engineering · Graduate School, University of Maryland
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