HW3.pdf - HW3 Due Problem 1 Li-ion battery design We want...

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HW3 Due 2/18/2019 Problem 1 Li-ion battery design We want to design a Li-ion battery that uses Si-based cathode containing Si spheres with diameter 0.02 in. The repeated charging and discharging processes will induce crack initiation and propagation in Si sphere, decreasing the capacity of battery and shortening its service life. During the electrochemistry cycles, a fluctuating spherical stress σ varying from 0 to 150 kpsi acts as the driving force to fracture the Si spheres. The fracture toughness K Ic is given as 10 kpsi in . The initial crack length is 0.0005 in. C =
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  • Spring '09
  • NagarajArakere
  • Tensile strength, D1

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