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Title: Synthesis, characterization and rate capability performance of the micro-porous MnO{sub 2} nanowires as cathode material in lithium batteries

Graphical abstract: Translating MnO{sub 2} nanowires as cathode materials in coin cell and studying their discharge behavior and cycling stability at different C-rates. - Highlights: • MnO{sub 2} nanowires have been synthesized via hydrothermal route. • The nanowires were employed as cathode materials in Li-batteries. • Discharge and cycling stability were studied at different C-rates. • Specific capacity and power density of 251 mAh g{sup −1} and 200 W kg{sup −1} were attained. - Abstract: A peculiar architecture of one-dimensional MnO{sub 2} nanowires was synthesized by an optimized hydrothermal route and has been lucratively exploited to fabricate highly efficient microporous electrode overlays for lithium batteries. These fabricated electrodes comprised of interconnected nanoscale units with wire-shaped profile which exhibits high aspect ratio in the order of 10{sup 2}. Their outstanding intercalation/de-intercalation prerogatives have also been studied to fabricate lithium coin cells which revealed a significant specific capacity and power density of 251 mAh g{sup −1} and 200 W kg{sup −1}, respectively. A detailed electrochemical study was performed to elucidate how surface morphology and redox reaction behaviors underlying these electrodes influence the cyclic behavior of the electrode. Rate capability tests at different C-rates were performed to evaluate the capacity and cycling performancemore » of these coin cells.« less
Authors:
; ; ;  [1] ;  [2] ;  [3] ;  [1] ;  [1]
  1. Nano Solar Division, Amrita Centre for Nanosciences, Kochi 682 041 (India)
  2. Institute for Superconducting and Electronic Materials, University of Wollongong, New South Wales 2500 (Australia)
  3. Department of Materials Engineering, Paichai University, Daejeon 302-735 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22475881
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 70; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ASPECT RATIO; CAPACITY; CATHODES; CLATHRATES; ENERGY STORAGE; LITHIUM; MANGANESE OXIDES; NANOWIRES; PERFORMANCE; POROUS MATERIALS; POWER DENSITY; REDOX REACTIONS; STABILITY; SURFACE PROPERTIES; SURFACES; SYNTHESIS