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Lee, Hyun-Wook
Energy Storage and Electron Microscopy Laboratory
Research Interests
  • Energy storage, secondary batteries, transmission electron microscopy, real time analysis

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Electrochemo-Mechanical Properties of Red Phosphorus Anodes in Lithium, Sodium, and Potassium Ion Batteries

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Title
Electrochemo-Mechanical Properties of Red Phosphorus Anodes in Lithium, Sodium, and Potassium Ion Batteries
Author
Capone, IsaacAspinall, JackDarnbrough, EdZhao, YingWi, Tae-UngLee, Hyun-WookPasta, Mauro
Issue Date
2020-12
Publisher
ELSEVIER
Citation
MATTER, v.3, no.6, pp.2012 - 2028
Abstract
Red phosphorus (RP) is a promising anode material for alkali-ion batteries due to a high theoretical capacity at low potentials when alloying with lithium, sodium, and potassium. Most alloy anode materials display large volume changes during cycling, which can lead to particle fracturing, low Coulombic efficiency, loss of electrical contact, and ultimately poor cycle life. In this paper we outline, through comprehensive electrochemo-mechanical characterization and modeling of the cycling stresses, why RP can be cycled at high current densities without fracture. Application of in situ nanoindentation and powder compression allows for measurement of the elastic, plastic, and fracture properties of RP. In situ transmission electron microscopy observation with extreme conditions (anisotropic ion diffusion and high current density) was used to validate the model, observing no catastrophic failure of RP particles. Electrochemo-mechanical characterization with geometry and stress modeling allows for predictions to be made for application of RP in alkali-ion batteries.
URI
https://scholarworks.unist.ac.kr/handle/201301/49277
URL
https://www.sciencedirect.com/science/article/pii/S2590238520305154?via%3Dihub
DOI
10.1016/j.matt.2020.09.017
ISSN
2590-2393
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