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Facile synthesis of loosely assembled α‐MnO 2 nanofiber coated with GQD / PANI for enhancing capacity
Author(s) -
An Kun,
He Jianlong,
Yang Liangxing,
Shen Luyan,
Sun Youyi
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.5860
Subject(s) - nanofiber , graphene quantum dot , electrochemistry , materials science , electrode , graphene , polyaniline , nanoparticle , nanotechnology , nanocomposite , electrospinning , chemical engineering , chemistry , polymer , composite material , engineering , polymerization
Summary A new class α‐MnO 2 nanofiber‐based on assemblies of nanoparticles was synthesized to improve the availability of Mn atom for application in electrochemical storage. Furthermore, the effect of graphene quantum dots/polyaniline (GQD/PANI) on the structure and electrochemical performance of α‐MnO 2 nanofiber was investigated. The MnO 2 nanofiber combined with GQD/PANI showed a larger specific capacitance of 1022.5 F g −1 at 1.0 A g −1 comparing to other MnO 2 ‐based electrode materials. The result was attributed to α‐MnO 2 nanofiber with loosely assembled structure and GQD/PANI with good conductivity, providing more electrochemical active sites and reducing internal resistance. The working does not only report new MnO 2 ‐based electrode materials with high performance but also provides a facile method to synthesize α‐MnO 2 nanofiber with a loosely assembled structure for various applications.