Template-free synthesis of hierarchical porous Co 3 O 4 microspheres and their application for electrochemical energy storage

MoS2 nanosheets decorated with ultrafine Co3O4 nanoparticles for high-performance electrochemical capacitors

“…where C S (mAh/g) was the specific capacity, I (mA) represented the discharge current, and M (g), Dt (s) designated the mass of active materials and total discharge time, respectively [2].…”

“…Hybrid supercapacitor, pairing two electrodes with different charge storage behavior, one capacitive and one faradaic, and the resulting device is in-between a supercapacitor and a battery [1], have gained considerable attention as an important energy storage device because of their high power density, fast charge/discharge process, and long cycle lifetime [2,3].…”

Synthesis of shish-kebab-like NiO@Co3O4 nanowire arrays and their application for electrochemical energy storage

“…The NiO@Co 3 O 4 nanowire arrays exhibit a specific capacity from 89 mAh g À 1 at 1.25 A g À 1 to 75 mAh g À 1 at 20 A g À 1 , higher than those of the Co 3 O 4 nanowire electrode (from 70 mAh g À 1 at 1.25 A g À 1 to 58 mAh g À 1 at 20 A g À 1 ). The obtained values of NiO@Co 3 O 4 nanowire arrays are higher than those of Co 3 O 4 nanosphere powders [14], and CNT/PPY composites [15]. It should be mentioned that the capacity from the nickel foam is very small.…”

Fabrication of PANI-coated honeycomb-like MnO2 nanospheres with enhanced electrochemical performance for energy storage

“…Consequently, it is very important and indispensable to develop rechargeable batteries and supercapacitors materials for energy storage [1][2][3][4]. Transition metal oxide (such as MnO 2 [5,6], Co 3 O 4 [7,8], NiO [9,10]) have been extensively studied for rechargeable batteries and supercapacitors applications owing to their good structural stability and excellent charge storage characteristics [2,11,12]. Compared to other transition metal oxides, MnO 2 is generally regarded as the most promising one for the electrode material of batteries and supercapacitors because of its good cycle stability, cost effectiveness, high surface area, ideal charge storage characteristics and environmental friendliness [6,[13][14][15][16][17].…”