Organosilica-based ionogel derived nitrogen-doped microporous carbons for high performance supercapacitor electrodes

Abstract

A new preparation process is developed to yield stable, yellowish and transparent organosilica ionogels, which after pyrolysis yields N-doped microporous carbon with remarkable capacity.

MOF‐Derived Ni(OH)2 Nanocubes/GO For High‐Performance Supercapacitor

“…Based on this, Ni(OH) 2 /carbon composites (such as Ni(OH) 2 /carbon nanotubes, Ni(OH) 2 /activated carbon and Ni(OH) 2 /graphene) have shown excellent electrochemical performance due to their good electrical conductivity, high active sites and heterogeneous structure . Among those carbon materials, oxide graphene (GO) has better electrical conductivity (10 6 S⋅m −1 ) and ultra‐higher theoretical specific surface area (2630 m 2 g −1 ), which could remarkably improve the dispersibility, loading amount and electrical conductivity of nickel hydroxide . In addition, GO has abundant oxygenic groups, which could be helpful to provide active sites to the growing of materials and also induce faradaic reactions for supercapacitor…”