Voltage-induced phase transformation: key to enhanced cycling stability in NiS pseudo-supercapacitors

Key Points

• This research aims to enhance the cycling stability of NiS pseudo-supercapacitors by optimizing the operating voltage.
• Optimized the operating voltage window of the device.
• Monitored the phase transition of NiS to β-Ni(OH)2 during cycling.
• Analyzed cycling stability metrics in relation to voltage variations.
• Prevented phase transformation of NiS to β-Ni(OH)2 under optimized voltage conditions.
• Achieved significantly enhanced cycling stability compared to unoptimized conditions.