Measurement and modeling of the mechanical and electrochemical response of amorphous Si thin film electrodes during cyclic lithiation
By Giovanna Bucci, Siva P. V. Nadimpalli, V. Sethuraman, A. Bower, Pradeep R. Guduru. 2013
194 citations recorded by the source corpus.
A combination of experimental measurements and numerical simulations are used to characterize the mechanical and electrochemical response of thin film amorphous Si electrodes during cyclic lithiation. Parameters extracted from the experiment include the variation of elastic modulus and the flow stress as functions of Li concentration; the strain rate sensitivity; the diffusion coefficient for Li transport in the electrode; the free energy of mixing as a function of Li concentration in the electrode; the exchange current density for the Lithium insertion reaction; as well as reaction rates and diffusion coefficients characterizing the rate of formation of solid-electrolyte interphase layer at the electrode surface. Model predictions are compared with experimental measurements; and the implications for practical Si based electrodes are discussed.
Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/0e52984e27d73c0004a674d8852a775c2e65bd10
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In Atomic and Molecular Physics, and Optics
In Electrical and Electronic Engineering
Citations in the corpus
- Diffusion–deformation theory for amorphous silicon anodes: The role of plastic deformation on electrochemical performance (2015, methodology): “(2.4) Here, µ0 is a reference chemical potential, R is the gas constant, ϑ is the absolute temperature, and the polynomial dependence ∑7 n=2 an · c̄(n) in the chemical free energy, in which an are fitting coefficients, is motivated by the recent paper Bucci et al. (2014).”