Synthesis and characterisation of amorphous MnO <sub>2</sub> /CNT via solid‐state microwave for high‐performance supercapacitors
Xiaoqi Tan, Shuxia Liu, Qingping Guo, Jie Zhang, Shujun Liang, Maoyong He, Jujie Luo
Abstract
Amorphous MnO2 was attached to carbon nanotubes (CNTs) in 60 seconds by solid-state microwave method. As electrodes in supercapacitors, the coactions of the MnO2 and CNT augmented the actual value of capacitance to 1250 F g−1, and cycle steadiness held 80% of the starting value after 7000 cycles. The equipped MnO2/CNT//AC asymmetric supercapacitor (ASC) manifested preferable energy density with 33.5 Wh kg−1 (at 400 W kg−1). Its glorious electrochemical properties of MnO2/CNT demonstrated that the microwave method has great potency to realise the composite of electrode materials.
Topics & Concepts
SupercapacitorMicrowaveMaterials scienceAmorphous solidNanotechnologySolid-stateOptoelectronicsCapacitanceEngineering physicsChemistryElectrodeEngineeringTelecommunicationsCrystallographyPhysical chemistrySupercapacitor Materials and FabricationAdvancements in Battery MaterialsMXene and MAX Phase Materials