Electron microscope images of Mg0.51V2PS10after discharging to 0.1 V, left to right: TEM image of a Mg0.51V2PS10needle-like crystallite, STEM image of a section of a Mg0.51V2PS10crystallite, STEM-EDX false colour images of V, P, S and Mg content in Mg0.51V2PS10. Magnesium- and carbon-containing species, from electrode preparation, on the surface of Mg0.51V2PS10particles are visible (Figure S1314).
