Supporting information - for All-Solid-State Lithium-Ion Batteries

Raman spectra were obtained with Alpha300R (WITec) using a 532 nm He-Ne laser. The cycle tests using liquid electrolytes were obtained by using 2032-type coin cells. The composite electrodes were pre- pared by spreading LCO powders (p-LCO or w-LCO), Super P, and poly(vinylidene fluoride) (PVDF) binder (KF1100, Kureha Inc.) on Al foil. The weight ratios of LCO:Super P:PVDF were 90:5:5. Li metal foil was used as both counter and reference electrode.

Figure S1. Photograph of the Li4SnS4-dissolved aqueous solution.

Figure S2. Raman spectra of LSS320 and LSS450.

Raman Shift (cm

^-1

)

100 200

300 400

500

LSS450

LSS320

Figure S3. Arrhenius plots of Li ionic conductivity for aqueous-solution processed Li4SnS4 powders (LSS320) before and after dry-air exposure.

Figure S4. Raman spectra of LSS-coated LiCoO2. The spectra of LSS320 is also shown for comparison.

Raman Shift (cm

^-1

)

100 200

300 400

500

LSS-coated LiCoO₂

LSS320

Figure S5. HRTEM images of LSS-coated LiCoO2 particle.

Figure S6. Rate capabilities of p-LCO and w-LCO electrodes in liquid-electrolyte cells cycled between 3.0-4.3 V (vs. Li/Li⁺).

Figure S7. Rate capability of the 0.4LiI-0.6LSS200-coated LiCoO2 electrode. a) Variations in discharge capacities versus charge-discharge cycle number at different C-rates. b) Discharge voltage profiles at different C-rates. The LiCoO2:0.4LiI-0.6LSS200 weight ratio in the composite electrodes was 85:15. The data for the mixed electrodes and the LSS320-coated LiCoO2 electrodes are also shown for comparison

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Dalam dokumen for All-Solid-State Lithium-Ion Batteries (Halaman 40-51)