Fig. 4: Analysis of the LCO electrode electrolyte interphase and decomposition pathway. | Nature Communications

Fig. 4: Analysis of the LCO electrode electrolyte interphase and decomposition pathway.

From: Covalent and polyfluorinated lithium salt for stable LiCoO2 batteries at high temperature and high voltage

Fig. 4: Analysis of the LCO electrode electrolyte interphase and decomposition pathway.The alternative text for this image may have been generated using AI.

a F 1s X-ray photoelectron spectroscopy (XPS) spectra of the LCO electrodes after 50 cycles. Time-of-flight secondary-ion mass spectrometry (TOF-SIMS) depth profiles (b) and corresponding 3D mapping images (c) of the LiNFBS-based LCO surface after 50 cycles, acquisition area was 50 μm × 50 μm. d Electrochemical potentials of redox couples. e Gibbs free energy profiles of the decomposition pathway of NFBS−.

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