Supercapacitive behavior of β-Ni(OH)2 nanospheres prepared by a facile electrochemical method

- β-Ni(OH)2 nanospheres were prepared by a facile electrochemical method.
- Mechanism of the deposit formation was proposed.
- Excellent capacity retention (90.1% after 1000 cycles) was observed.
- Specific capacitance of as high as 754.5 F g−1 was calculated.