Enhancing high-performance supercapattery electrodes: harnessing structural and compositional synergies via phosphorus doping on bimetallic boride for rapid charging

Durable, nano-porous P-NCB is synthesized with a high specific capacity of 1576 C g −1 at 2 A g −1 . P-NCB//R-GO based supercapattery device exhibits a high energy density of 41.56 W h kg −1 even at a high power density of 15 000 W kg −1 .