Journal
ELECTROCHIMICA ACTA
Volume 132, Issue -, Pages 441-447Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.03.157
Keywords
Graphene; manganese monoxide; spray pyrolysis; anode material; lithium ion battery
Categories
Funding
- National Research Foundation of Korea (NRF) - Korea government (MEST) [2012R1A2A2A02046367]
- Converging Research Center Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2011-50210]
- National Research Foundation of Korea [2011-50210] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Graphene-MnO composite and hollow-structured MnO powders are prepared by a simple one-pot spray pyrolysis process. The graphene content in the graphene-MnO composite powder is estimated to be 10 wt.%. The fine MnO crystals of size several tens of nanometers are uniformly distributed all over the graphene. The BET specific surface areas of the graphene-MnO composite and hollow-structured MnO powders are found to be 20 and 5 m(2) g(-1), respectively. The graphene-MnO composite powders have high initial discharge and charge capacities of 1207 and 849 mA h g(-1), respectively, at a current density of 500 mA g(-1). The initial discharge and charge capacities of the hollow-structured MnO powders are 1004 and 673 mA h g(-1), respectively. The discharge capacities of the graphene-MnO composite and hollow-structured MnO powders for the 130th cycle are 1313 and 701 mA h g(-1), respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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