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Hierarchical Tubular Structures Composed of Mn‐Based Mixed Metal Oxide Nanoflakes with Enhanced Electrochemical Properties
Author(s) -
Guo Yan,
Yu Le,
Wang ChengYang,
Lin Zhan,
Lou Xiong Wen David
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201501974
Subject(s) - materials science , electrochemistry , calcination , supercapacitor , chemical engineering , oxide , metal , carbon fibers , electrode , redox , nanotechnology , nanofiber , hydrothermal circulation , energy storage , lithium (medication) , composite number , metallurgy , catalysis , composite material , medicine , biochemistry , chemistry , endocrinology , engineering , power (physics) , physics , quantum mechanics
In this work, a simple strategy is developed to synthesize hierarchical tubular structures (HTS) of Mn‐based (Co‐Mn, Ni‐Mn, Cu‐Mn, Zn‐Mn) mixed metal oxides. The first step in the synthesis involves redox reaction mediated growth of nanoflakes on carbon nanofibers under hydrothermal conditions. After calcination in air, carbon nanofibers are removed and HTS of mixed metal oxides can be obtained with little structural deterioration. The resultant HTS are advantageous as electrodes for electrochemical energy storage. As an example, it is shown that the Co‐Mn‐HTS sample exhibits outstanding electrochemical performance as electrode materials for hybrid supercapacitors and lithium ion batteries.