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Dynamic imaging of lithium in solid-state batteries by operando electron energy-loss spectroscopy with sparse coding
- Source :
- Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020), Nature Communications
- Publication Year :
- 2020
- Publisher :
- Nature Portfolio, 2020.
-
Abstract
- Lithium-ion transport in cathodes, anodes, solid electrolytes, and through their interfaces plays a crucial role in the electrochemical performance of solid-state lithium-ion batteries. Direct visualization of the lithium-ion dynamics at the nanoscale provides valuable insight for understanding the fundamental ion behaviour in batteries. Here, we report the dynamic changes of lithium-ion movement in a solid-state battery under charge and discharge reactions by time-resolved operando electron energy-loss spectroscopy with scanning transmission electron microscopy. Applying image denoising and super-resolution via sparse coding drastically improves the temporal and spatial resolution of lithium imaging. Dynamic observation reveals that the lithium ions in the lithium cobaltite cathode are complicatedly extracted with diffusion through the lithium cobaltite domain boundaries during charging. Even in the open-circuit state, they move inside the cathode. Operando electron energy-loss spectroscopy with sparse coding is a promising combination to visualize the ion dynamics and clarify the fundamentals of solid-state electrochemistry.<br />Understanding lithium ion dynamics holds the key to unlocking better battery materials and devices. Here, by combining electron energy-loss spectroscopy and machine learning, the authors reveal how lithium is extracted from LiCoO2 cathode used in a solid-state battery.
- Subjects :
- Battery (electricity)
Materials science
Science
General Physics and Astronomy
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
Article
law.invention
chemistry.chemical_compound
Batteries
law
Scanning transmission electron microscopy
Fast ion conductor
lcsh:Science
Multidisciplinary
business.industry
Electron energy loss spectroscopy
General Chemistry
021001 nanoscience & nanotechnology
Cathode
0104 chemical sciences
Anode
Cobaltite
chemistry
Optoelectronics
Lithium
lcsh:Q
0210 nano-technology
business
Transmission electron microscopy
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 11
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....8f916e6abef13838f3a190c29e6c0b0c