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The electrochemical performance of transition metal and graphene added Li3V2(PO4)(3) cathode material for Li-ion Batteries

Title
The electrochemical performance of transition metal and graphene added Li3V2(PO4)(3) cathode material for Li-ion Batteries
Author
이영무
Keywords
Electronic materials; Chemical synthesis; Electrochemical measurement; Electrical properties; Energy storage
Issue Date
2015-12
Publisher
ELSEVIER SCIENCE BV
Citation
MATERIALS LETTERS, v. 160, Page. 194-199
Abstract
In this paper, a transition metal and graphene-added Li3V1.9M0.1(PO4)(3)/graphene (LVP-M-G, M=Ag, Ni, Ti, and Zr) composite as a cathode material for lithium ion batteries (LIBs) was synthesized by a simple sol-gel method. The monoclinic structure and morphology of as synthesized composites were observed by a power X-ray diffraction (XRD) and a scanning electron microscopy (SEM). The content of carbon was about 1.5 wt% in the LVP composite measured by a CHNS Elemental Analyzer. An electrochemical performance of the LVP-M-G was also evaluated by a galvanostatic charge/discharge, a cycling performance, and an electrochemical impedance spectroscopy (EIS), respectively. The introduction of both transition metal and graphene in the LVP exhibited smaller particle size, higher discharge capacity, and lower charge transfer resistance compared to the pristine LVP. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0167577X15303347?via%3Dihubhttp://hdl.handle.net/20.500.11754/30092
ISSN
0167-577X; 1873-4979
DOI
10.1016/j.matlet.2015.07.140
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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