A flexible asymmetric supercapacitor(ASC)based on a Co Al-layered double hydroxide(Co Al-LDH)electrode and a reduced graphene oxide(r GO) electrode was successfully fabricated. The Co Al-LDH electrode as a positive electrode was synthesized by directly growing Co Al-LDH nanosheet arrays on a carbon cloth(CC)through a facile hydrothermal method, and it delivered a specific capacitance of 616.9 F g~(-1)at a current density of1 A g~(-1). The r GO electrode as a negative electrode was synthesized by coating r GO on the CC via a simple dipcoating method and revealed a specific capacitance of110.0 F g~(-1)at a current density of 2 A g~(-1). Ultimately,the advanced ASC offered a broad voltage window(1.7 V)and exhibited a high superficial capacitance of1.77 F cm~(-2)at 2 m A cm~(-2)and a high energy density of0.71 m Wh cm~(-2)at a power density of 17.05 m W cm~(-2),along with an excellent cycle stability(92.9% capacitance retention over 8000 charge–discharge cycles). A flexible asymmetric supercapacitor (ASC) based on a Co Al-layered double hydroxide (Co Al-LDH) electrode and a reduced graphene oxide (r GO) electrode was successfully fabricated. The Co Al-LDH electrode as a positive electrode was synthesized by directly growing Co Al-LDH nanosheet arrays on a carbon cloth (CC) through a facile hydrothermal method, and it delivered a specific capacitance of 616.9 F g -1 at a current density of 1 A g -1. r GO electrode as a negative electrode was synthesized by coating r GO on the CC via a simple dipcoating method and revealed a specific capacitance of 110.0 F g -1 at a current density of 2 A g -1. Ultimately, the advanced ASC offered a broad voltage window (1.7 V) and exhibited a high superficial capacitance of 1.77 F cm -2 at 2 m A cm -2 and a high energy density of 0.71 m Wh cm -2 at a power density of 17.05 m W cm -2 along with an excellent cycle stability (92.9% capacitance retention over 8000 charge-discharge cycles).