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Lithium-Sulfur Battery: Design, Characterization, and Physically-based Modeling

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Lithium-Sulfur Battery: Design, Characterization, and Physically-based Modeling ( lithium-sulfur-battery-design-characterization-and-physicall )

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3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 Figure 5.14: Parameter variation: Impact of the speed of diffusion in the liquid elec- trolyte on charge/discharge profiles. ref 1.0·10−10 m2/s 3.0·10−11 m2/s Deff = 1.0 · 10−11 m2/s 3.0·10−12 m2/s 1.0·10−12 m2/s 40 30 20 10 100 10 0 50 100 150 200 250 300 Capacity / Ah/kgS ref 1.0 · 10−12 m2 /s 3.0 · 10−12 m2 /s 1.0 · 10−11 m2 /s 3.0 · 10−11 m2 /s 1.0 · 10−10 m2 /s 01 0 10 20 30 40 Z’ / Ω · cm2 Figure 5.15: Impact of diffusion in the liquid electrolyte on the EIS high frequency intercept. Since there is considerable variation in the reference data, the spectra of several similar cells are plotted. Left: Nyquist plot (two sim- ulations are not visible since they intercept at much higher Z′). Right: Comparison of the x-axis intercept for different diffusion constants. The experimentally confirmed range is shaded in gray. 112 −Z” / Ω · cm2 Cell voltage / V High frequency intercept / Ω · cm2

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Lithium-Sulfur Battery: Design, Characterization, and Physically-based Modeling

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