HECDI electrodes compositions and summarized names.

Sample	Active materials	Mass ratio (%)
AC	AC + PVDF	90 : 10
AC/CB	AC + CB + PVDF	80 : 10 : 10
AC/Co3O4	AC + CB + Co3O4 + PVDF	70 : 10 : 10 : 10
AC/Co3O4–Sb2O3–SnO2	AC + CB + (Co3O4–Sb2O3–SnO2) + PVDF	70 : 10 : 10 (70 : 2.4 : 27.6) : 10