Toward high practical capacitance of Ni(OH)2 using highly conductive CoB nanochain supports

Abstract

Ultrathin porous Ni(OH)₂ sheets were grown on the surface of nano-chain CoB as cores via a facile two-step solution-based method at ambient conditions. The resultant CoB@Ni(OH)₂ of 27.89 wt% Ni(OH)₂ loading has a high specific capacitance of 1504.4 F g⁻¹ at 0.5 A g⁻¹, 1293.7 F g⁻¹ at 2 A g⁻¹ and 746.8 F g⁻¹ at 6 A g⁻¹.