Open AccessBuilding homogeneous nanostructure in Ni(OH) 2 /MWCNTs composite by electrostatic attraction
Author(s) -
Shi Min,
Li Yanhong,
Cui Hongtao
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5469
Subject(s) - composite number , materials science , homogeneous , carbon nanotube , electrochemistry , nanostructure , capacitance , composite material , monolayer , chemical engineering , nanotechnology , electrode , chemistry , physics , engineering , thermodynamics
A facile strategy for the preparation of composites with homogeneous distribution of multi‐walled carbon nanotubes (MWCNTs) in Ni(OH) 2 was proposed. The electrostatic attraction between positively charged Ni(OH) 2 monolayer nanosheets and negatively charged MWCNTs was utilised to self‐assemble the composites. The results of electrochemical measurement on the composite containing 30 wt% MWCNTs indicated that the homogeneous composition of MWCNTs in composite significantly reduced the electrical resistance and promoted the electrochemical utilisation of Ni(OH) 2 . As a result, the composite presented high electrochemical performance: having specific capacitance of 1568.8 F g −1 at low current density of 2.4 A g −1 and keeping a relatively high specific capacitance of 781.8 F g −1 at high current density of 81.7 A g −1 . Based on the results in this works, it is hoped that the adopted strategy could provide a promising idea for the preparation of composites with homogeneous distribution of individual components.