Electrochemical synthesis of polyaniline–Ni–Co hybrid structures on titanium substrates for ultrahigh-capacitance supercapacitor electrodes

Key Points

• This research aims to develop a polyaniline–Ni–Co hybrid electrode on titanium substrates to enhance supercapacitor performance.
• Fabrication of PANI–Ni–Co/Ti hybrid electrodes via sequential electrodeposition.
• Assessment of areal capacitance, rate capability, and cycling stability.
• Comparison with existing supercapacitor technologies.
• Achieved ultrahigh areal capacitance with the hybrid electrode.
• Demonstrated excellent rate capability under various conditions.
• Showed remarkable cycling stability over multiple charge-discharge cycles.