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Investigators at Harvard University Publish New Data on Applied Physics
April 12th, 2011
"Silicon can host a large amount of lithium, making it a promising electrode for high-capacity lithium-ion batteries. Upon absorbing lithium, silicon swells several times its volume; the deformation often induces large stresses and pulverizes silicon," investigators in Cambridge, United States report.
"Recent experiments, however, indicate that under certain conditions lithiation causes inelastic deformation. This paper models such an inelastic host of lithium by considering diffusion, elastic-plastic deformation, and fracture," wrote K.J. Zhao and colleagues, Harvard University.
The researchers concluded: "The model shows that fracture is averted for a...
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Source: Ivy League Week (2011-04-12)