The flower-like BSC/NiCo-LDHs composite as a high-performance active material for flexible supercapacitors

It is crucial to create an environmentally friendly renewable energy source given the rising environmental pollution brought on by overconsumption of fossil fuels and the global advocacy of green and sustainable development. Because of their high power density, extended life span, and quick charging and discharging speed, supercapacitors, a novel form of energy-storage device, have drawn a lot of attention from researchers in recent years. Biomass-derived porous carbon (BSC) has a high specific surface area and excellent electrical conductivity, making it an attractive material for energy storage. In this study, porous carbon was prepared from waste bamboo shoot shells and combined with nickel-cobalt-layered double hydroxide (NiCo-LDHs) as an active material for supercapacitors. The specific surface area of the porous carbon produced by activation pyrolysis was 1404.4 m(2)/g. A simple solvothermal method was used to produce BSC/NiCo-LDHs composites with flower-like features. At a current density of 1 A/g, the optimum BSC/NiCo-LDHs-0.02 had a specific capacitance of 974 F/g. The capacitance retention was 82.8% after 6000 cycles at a current density of 5 A/g, and the capacity retention was 60 similar to 95% when bending tests were performed. In this work, a composite active material with excellent electrochemical properties was proposed, which has considerable potential for application in high-performance and flexible supercapacitors.