Hollow NiO nanofibers modified by citric acid and the performances as supercapacitor electrode

Size-dependent capacitance of NiO nanoparticles synthesized from Ni-based coordination polymer precursors with different crystallinity

“…The specific capacitance for NiO-19 nm was determined to be 165, 154, 150, 145, and 134 F g À1 at scan rates of 10, 20, 30, 50 and 100 mV s À1 , respectively. Although there are some reports on different materials showing much higher specific capacitances [29][30][31], it still can compare with other recent reports on NiO architectures [8,13,32,33]. CV currents are directly proportional to the scan rates of CV, which demonstrates that, an ideal capacitive behaviour.…”

“…Transition-metal oxides, such as ruthenium oxide [7], nickel oxide (NiO) [8], cobalt oxide [9] and manganese oxide [10], have been extensively studied in electrochemical capacitor electrodes. Among them, the versatile NiO semiconductor with various morphologies is a potentially interesting electrode material due to their (i) outstanding electrochemical property with high theoretical specific capacitance, (ii) natural abundance and low cost, as well as their (iii) good capacitive retention and stability in corrosive alkaline conditions [11][12][13]. In addition, at the nano-scale regime, NiO materials are expected to exhibit excellent performances when compared to their bulk counterpart, as smaller material is necessary and much higher surface area can be achieved.…”

3D hierarchical mesoporous roselike NiO nanosheets for high-performance supercapacitor electrodes

“…Therefore, great efforts have been devoted to searching for relative low cost transition metal oxides with good electrochemistry performance [10,11] . Nickel oxide as one of the most promising candidates of p-type transition metal oxide semiconductors, has been investigated as a high-performance electrode material in supercapacitors since it possesses the advantages of availability, environmental-friendly, high chemical/thermal stability, high theoretical capacitance and low cost [12] .…”

Preparation and electrochemical characteristic of porous NiO supported by sulfonated graphene for supercapacitors

“…NiO is one of materials suitable for pseudocapacitor electrode applications due to its high theoretical specific capacitance, low cost, and high chemical stability [7][8][9][10][11].…”