Studying the Kinetics of Crystalline Silicon Nanoparticle Lithiation with In Situ Transmission Electron Microscopy

Studying the Kinetics of Crystalline Silicon Nanoparticle Lithiation with In Situ Transmission Electron Microscopy

In situ transmission electron microscopy (TEM) is used to study the electrochemical lithiation of high‐capacity crystalline Si nanoparticles for use in Li‐ion battery anodes. The lithiation reaction slows down as it progresses into the particle interior, and analysis suggests that this behavior is d...

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Veröffentlicht in:Advanced Materials, 24(45):6034-6041 24(45):6034-6041, 2012-11, Vol.24 (45), p.6034-6041
Hauptverfasser: McDowell, Matthew T., Ryu, Ill, Lee, Seok Woo, Wang, Chongmin, Nix, William D., Cui, Yi
Format: Artikel
Sprache:eng
Schlagworte:
Crystal structure
Crystallinity
Crystallization - methods
Diffusion
Electrons
energy storage
Environmental Molecular Sciences Laboratory
in situ TEM
Kinetics
Li-ion batteries
Lithium - chemistry
Lithium - isolation & purification
Lithium-ion batteries
Materials science
Materials Testing
Microscopy, Electron, Transmission
Nanoparticles
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Particle Size
phase transformations
Silicon
Silicon - chemistry
Transmission electron microscopy
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Zusammenfassung:In situ transmission electron microscopy (TEM) is used to study the electrochemical lithiation of high‐capacity crystalline Si nanoparticles for use in Li‐ion battery anodes. The lithiation reaction slows down as it progresses into the particle interior, and analysis suggests that this behavior is due not to diffusion limitation but instead to the influence of mechanical stress on the driving force for reaction.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201202744