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Title: Mesoporous wormholelike carbon with controllable nanostructure for lithium ion batteries application

Highlights: • Wormholelike carbon (WMC) with controllable nanostructure is prepared by sol–gel method. • The reversible capacity of WMC is much higher than that of many other reported nanocarbons. • The effect of pore diameter on Li storage capacity is investigated. - Abstract: A class of mesoporous wormholelike carbon (WMC) with controllable nanostructure was prepared by sol–gel method and then used as the anode material of lithium-ion batteries. Based on the experimental results, it is found that the nanostructure of the as-prepared WMC plays an important role in the electrochemical performances. A suitable mesopore size is necessary for a high performance carbon-based anode material since it can not only guarantee effective mass transport channels but also provide large surface area. As a result, F30 with a mesopore size of 4.4 nm coupled with high surface area of 1077 m{sup 2} g{sup −1} shows a reversible capacity of 630 mAh g{sup −1}, much higher than commercial graphite and many other reported nanocarbons.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [2]
  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006 (China)
  2. Materials Science Institute, PCFM Laboratory, School of Chemistry and chemical Engineering, Sun Yat-sen University, Guangzhou 510275 (China)
Publication Date:
OSTI Identifier:
22475791
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 66; 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; CAPACITY; CARBON; EFFECTIVE MASS; ELECTRIC BATTERIES; ELECTRIC CONDUCTIVITY; ELECTROCHEMISTRY; ELECTRON MICROSCOPY; GRAPHITE; LITHIUM IONS; NANOSTRUCTURES; PERFORMANCE; POROSITY; SOL-GEL PROCESS; SURFACE AREA