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Synthesis and characterization of Carbon Nano Fiber/LiFePO4 composites for Li-ion batteries

Bhuvaneswari, M. S. and Bramnik, N. N. and Ensling, D. and Ehrenberg, H. and Jaegermann, W. (2008):
Synthesis and characterization of Carbon Nano Fiber/LiFePO4 composites for Li-ion batteries.
In: Journal of Power Sources, pp. 553-560, 180, (1), ISSN 03787753,
[Online-Edition: http://dx.doi.org/10.1016/j.jpowsour.2008.01.090],
[Article]

Abstract

Carbon Nano Fibers (CNFs) coated with LiFePO4 particles have been prepared by a non-aqueous sol–gel technique. The functionalization of the CNFs by HNO3 acid treatment has been confirmed by Raman and XPS analyses. The samples pure LiFePO4 and LiFePO4–CNF have been characterized by XRD, SEM, RAMAN, XPS and electrochemical analysis. The LiFePO4–CNF sample shows better electrochemical performance compared to as-prepared LiFePO4. LiFePO4–CNF (10 wt.%) delivers a higher specific capacity (not, vert, similar140 mAh g−1) than LiFePO4 with carbon black (25 wt.%) added after synthesis (not, vert, similar120 mAh g−1) at 0.1C.

Item Type: Article
Erschienen: 2008
Creators: Bhuvaneswari, M. S. and Bramnik, N. N. and Ensling, D. and Ehrenberg, H. and Jaegermann, W.
Title: Synthesis and characterization of Carbon Nano Fiber/LiFePO4 composites for Li-ion batteries
Language: English
Abstract:

Carbon Nano Fibers (CNFs) coated with LiFePO4 particles have been prepared by a non-aqueous sol–gel technique. The functionalization of the CNFs by HNO3 acid treatment has been confirmed by Raman and XPS analyses. The samples pure LiFePO4 and LiFePO4–CNF have been characterized by XRD, SEM, RAMAN, XPS and electrochemical analysis. The LiFePO4–CNF sample shows better electrochemical performance compared to as-prepared LiFePO4. LiFePO4–CNF (10 wt.%) delivers a higher specific capacity (not, vert, similar140 mAh g−1) than LiFePO4 with carbon black (25 wt.%) added after synthesis (not, vert, similar120 mAh g−1) at 0.1C.

Journal or Publication Title: Journal of Power Sources
Volume: 180
Number: 1
Uncontrolled Keywords: Carbon Nano Fiber; LiFePO4; Raman analysis; X-ray photo electron spectroscopy; Electrochemical analysis
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Surface Science
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A3: Boundary layers and thin films of ionic conductors: Electronic structure, electrochemical potentials, defect formation and degradation mechanisms
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B4: In situ investigations of the degradation of intercalation batteries and their modelling
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 04 Aug 2011 08:20
Official URL: http://dx.doi.org/10.1016/j.jpowsour.2008.01.090
Additional Information:

SFB 595 Cooperation A3, B4

Identification Number: doi:10.1016/j.jpowsour.2008.01.090
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