Figure 4: Investigation of cycle degradation of Li-SO2 batteries. | Nature Communications

Figure 4: Investigation of cycle degradation of Li-SO2 batteries.

From: High-efficiency and high-power rechargeable lithium–sulfur dioxide batteries exploiting conventional carbonate-based electrolytes

Figure 4

(a,b) Cycle properties of rebuilt cells with cycled gas electrode or cycled lithium anode: (a) under carbonate electrolyte and (b) under ether electrolyte. The specific capacity was normalized by the mass of carbon loading whose average mass in a gas electrode was ∼0.8±0.1 mg. (c) Lithium symmetric cell test at a current density of 1 mA cm−2 with SO2-saturated EC/DMC (red) and TEGDME (blue). (d) X-ray diffraction spectra of gas electrode of Li-SO2 cells at the middle and end of cycles. (e) SEM images (scale bar, 500 nm) of gas electrode at the end of cycle and elemental mapping by energy-dispersive spectroscopy (scale bar, 50 μm). (f) XPS 2p spectra for gas electrode after cycling of Li-SO2 cell.

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