fig5

Figure 5. Different potassiation and depotassiation mechanisms of Bi. (A) Alloying and dealloying processes in microparticle Bi electrode^[57]. Copyright 2018, Wiley-VCH. (B) Discharge/charge curves for XRD patterns and XRD patterns with Rietveld refinement of intermediates of porous Bi electrode^[58]. Copyright 2018, Wiley-VCH. (C) Ex-situ XRD patterns collected at different charge/discharge states with refined lattice parameters and proposed potassiation/depotassiation mechanism of Bi@reduced graphene oxide (rGO) electrode^[59]. Copyright 2018, Wiley-VCH. (D) Operando XRD pattern with superimposed voltage profiles of C@DSBC and microsized Bi^[60]. Copyright 2019, Elsevier.