Synthesis of Li2MnSiO4-Graphene Composite and Its Electrochemical Performances as a Cathode Material for Lithium Ion Batteries
- Title
- Synthesis of Li2MnSiO4-Graphene Composite and Its Electrochemical Performances as a Cathode Material for Lithium Ion Batteries
- Author
- 백운규
- Keywords
- Cathode; Graphene; Li ion batteries; Li2MnSiO4
- Issue Date
- 2014-10
- Publisher
- American Scientific Publishers
- Citation
- Journal of nanoscience and nanotechnology, 2014, 14(10), P.7898-7902
- Abstract
- The Li2MnSiO4 is a promising candidate as a cathode for lithium ion batteries due to its large theoretical capacity of 330 mA h g(-1) and high thermal stability. However, the problems related to low electronic conductivity and large irreversible capacity at the first cycle limits its practical use as a Li-ion cathode material. We have developed a carbon coated Li2MnSiO4-graphene composite electrode to overcome these problems. Our designed electrode exhibits high reversible capacity of 301 mA h g(-1), with a high initial coulombic efficiency, and a discharge capacity at current rate of 0.5 C, that is double value of carbon coated Li2MnSiO4-carbon black composite electrode. These significant improvements are attributed to fast electron transport along the graphene sheet.
- URI
- http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000010/art00095
- ISSN
- 1533-4880; 15334880
- DOI
- 10.1166/jnn.2014.9390
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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