Microwave-assisted fabrication of high-performance supercapacitors based on electrodes composed of cobalt oxide decorated with reduced graphene oxide and carbon dots

Exploring the Effect of Ultrafast Intensive Pulsed Light (IPL) Annealing on the Structure and Performance of Cobalt Oxide Electrodes for Supercapacitors

“…After 10,000 cycles, the CHA Co 3 O 4 electrode shows average 78.65% retention of its initial capacitance, while the IHA Co 3 O 4 electrode shows average 90.81% retention of its initial capacitance, which is higher than the values reported in the literature. 27,46,[48][49][50]57,58 In addition, the symmetric charging and discharging behaviors for both electrodes exhibit nearly 100% coulombic efficiency. The IHA Co 3 O 4 electrode provides a high areal and specific capacitance, high-rate capability, and excellent cyclic stability performance compared to the CHA Co 3 O 4 electrode.…”

Insight into a Nitrogen-Doping Mechanism in a Hard-Carbon-Microsphere Anode Material for the Long-Term Cycling of Potassium-Ion Batteries

“…To date, the design of anode materials is the key to developing PIBs. In consideration of the similar development of anode materials in LIBs, several anode materials have attracted much attention, mainly including carbon-based materials [10], metal oxides [11,12], and alloy-type materials [13,14]. Although potassium-ions intercalated into graphite carbon layers can form a thermodynamically stable intercalation compound, its larger radius (0.138 nm) hinders the rapid intercalation behavior between the carbon layers and shows unsatisfactory specific capacity [15,16].…”

Rational Integration of ZIF-8 and BiPO4 for Energy Storage and Environmental Applications

“…In particular, graphene discovery highlighted the nanocarbon-based material’s irreplaceable impact on energy storage. ,− By this time, there have been many studies on the singly or doped effect of activated carbon (AC), graphene, graphene oxide, carbon nanotubes (CNTs), graphical carbon nitride (g-C 3 N 4 ), carbon dots (CDs), and carbon quantum dots. − Transition metal oxides, metal sulfides, polyoxometalates, phosphates, carbonates, chalcogenides, metal–organic frameworks (MOFs) conductive polymers, and their compounds have been investigated as adequate materials for energy storage applications, and they have a domain in other areas such as catalysts, sensors, drug delivery, gas storage/separation, and other types of energy storage/conversion systems such as batteries and fuel cells. − Chiefly, metal oxides including Co 3 O 4 , Fe 2 O 3 , V 2 O 5 , RuO 2 , ZnO, MnO 2 , NiO, SnO 2 , TiO 2 , CuO, Bi 2 O 3 , etc. with high specific capacitance values and high pseudocapacitive behaviors are commonly used. ,− Among the available metal oxides, Co 3 O 4 and RuO 2 come to the forefront with magnificent electrochemical reversibility and high theoretical specific capacitance, as well as remarkable cycling stability . However, the steep price and toxic nature of these materials limit their utilizability. , To sum up, the formation of ideal SCs requires reasonably priced and environmentally friendly materials with high capacitance, besides high energy and power densities.…”

“… 35 , 48 − 63 Among the available metal oxides, Co 3 O 4 and RuO 2 come to the forefront with magnificent electrochemical reversibility and high theoretical specific capacitance, as well as remarkable cycling stability. 60 However, the steep price and toxic nature of these materials limit their utilizability. 64 , 65 To sum up, the formation of ideal SCs requires reasonably priced and environmentally friendly materials with high capacitance, besides high energy and power densities.…”