Premium
Synthesis and characterisation of amorphous MnO 2 /CNT via solid‐state microwave for high‐performance supercapacitors
Author(s) -
Tan Xiaoqi,
Liu Shuxia,
Guo Qingping,
Zhang Jie,
Liang Shujun,
He Maoyong,
Luo Jujie
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5235
Subject(s) - supercapacitor , capacitance , materials science , carbon nanotube , microwave , amorphous solid , electrode , electrochemistry , nanotechnology , solid state , composite number , amorphous carbon , chemical engineering , composite material , chemistry , engineering physics , engineering , telecommunications , organic chemistry
Summary Amorphous MnO 2 was attached to carbon nanotubes (CNTs) in 60 seconds by solid‐state microwave method. As electrodes in supercapacitors, the coactions of the MnO 2 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 MnO 2 /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 MnO 2 /CNT demonstrated that the microwave method has great potency to realise the composite of electrode materials.