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(s)
송태섭Kim, Jeonghyun[Kim, Jeonghyun]Park, Hyunjung[Park, Hyunjung]Yuh, Junhan[Yuh, Junhan]Paik, Ungyu[Paik, Ungyu]
Keywords
GRAPHENE OXIDE; GRAPHITE OXIDE; LI2MSIO4 M; LI2MNSIO4/C; MN; FE; NANOSHEETS; CAPACITY; ANODE
Issue Date
201410
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.10, pp.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://hdl.handle.net/YU.REPOSITORY/30619http://dx.doi.org/10.1166/jnn.2014.9390
ISSN
1533-4880
Appears in Collections:
공과대학 > 신소재공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE