In-situ coating N-doped carbon on Co3O4 aerogel powders for remarkable supercapacitive properties

Co3O4 aerogel powders with N-doped carbon coating were prepared by a sol–gel route.The sample has a mesoporous structure with a specific surface area of 145 m2 g−1.The prepared electrode exhibits a high specific capacity of 753.6 C g−1.The electrode shows remarkable properties in long-term GCD cycles and rate capability.An assembled ASC achieves a maximum energy density of 38.94 Wh kg−1.