Fig. 3: Electrochemical performances and sulfur redox mechanism. | Nature Communications

Fig. 3: Electrochemical performances and sulfur redox mechanism.

From: Optimizing potassium polysulfides for high performance potassium-sulfur batteries

Fig. 3: Electrochemical performances and sulfur redox mechanism.The alternative text for this image may have been generated using AI.

a CV curves of KSBs employing WSA-W2C@NC/S, W2C@NC/S, and NC/S cathodes. b–d GCD profiles curves at 167.5 mA g−1 (b) rate-performance (c) and cyclability (d) of KSBs employing three cathodes. e Comparison of specific capacity, rate and cycling performance of WSA-W2C@NC/S cathode with the state-of-the-art cathodes for KSBs reported. f In-situ XRD of WSA-W2C@NC/S cathode in the 1st charge and 2nd discharge processes. g Ex-situ SAED patterns of WSA-W2C@NC/S cathode at various discharge/charge states. h Ex-situ S 2p XPS spectra of WSA-W2C@NC/S cathode at selected discharge/charge states. Source data are provided as a Source Data file.

Back to article page