Solid solution reinforced V3CrC3TxMXene cathodes for Zn-ion micro-supercapacitors with high areal energy density and superior flexibility

Partial Cr substitution for V in the V 4 C 3 T x MXene promotes the capacitance, discharging potential, and cycle stability of in-plane ZMSCs. The device exhibits a high areal energy density of 51.12 μW h cm −2 and flexibility index of 100.