An all-metal-oxide asymmetric supercapacitor based on MoO3@Ni nanowire array anode with high mass loading and VO2@NNA nanowire array cathode was constructed, which achieved a real capacity (307 mF cm−2) and cyclability (116.6% capacitance retention after 20 000 cycles).
A NiCo2O4/MnO2 heterostructure with high mass loading MnO2 microflowers was built on the surface of 3D graphene/nickel foam for the preparation of an asymmetric supercapacitor with splended energy density (45.9 Wh kg−1).
Herein, binder-free sponge-like NiCo2S4 nanosheets supported on Ni foam with ultra-high mass loading were synthesized via a facile one-step hydrothermal route.
Hydrothermally synthesized NiCoMnO4 NPs showed a high capacitance of 510 F g−1 with high mass loaded electrodes (∼10 mg cm−2). Integrated with RGO NSs, their viability was testified for high-performance asymmetric supercapacitors.
All-solid-state flexible asymmetric supercapacitors fabricated using CoS and AC showed a high cell voltage, high specific capacitance, and high energy density of 5.3 W h kg−1 with excellent electrochemical stability.
High mass loading flower-like MnO2 on NiCo2O4 deposited graphene/nickel foam as high-performance electrodes for asymmetric supercapacitors