Next Article in Journal
Fiber Laser Welding of Fuel Cladding and End Plug Made of La2O3 Dispersion-Strengthened Molybdenum Alloy
Previous Article in Journal
The Preservation of Bone Cell Viability in a Human Femoral Head through a Perfusion Bioreactor
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle

Fluorinated Graphene Prepared by Direct Fluorination of N, O-Doped Graphene Aerogel at Different Temperatures for Lithium Primary Batteries

1,†, 1,†, 1, 1, 2,*, 1 and 1,*
1
School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, China
2
Lab of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China
*
Authors to whom correspondence should be addressed.
These authors do same contributions to this work.
Materials 2018, 11(7), 1072; https://doi.org/10.3390/ma11071072
Received: 14 May 2018 / Revised: 11 June 2018 / Accepted: 15 June 2018 / Published: 25 June 2018
(This article belongs to the Section Carbon Materials)
  |  
PDF [3210 KB, uploaded 25 June 2018]
  |  

Abstract

Fluorinated graphene (FG) has been a star material as a new derivative of graphene. In this paper, a series of fluorinated graphene materials are prepared by using N, O-doped graphene aerogel as precursor via a direct fluorination method, and the effect of fluorination temperature on the FG structure is investigated. The prepared FG samples are systematically characterized by scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and Raman spectroscopy. It is found that the structure of FG, including features such as layer size, chemical composition, chemical bond state of the component elements, etc., is significantly related to the fluorination temperature. With the change of the fluorination temperature, fluorine atoms enter the graphene framework by a substitution process of the N, O-containing groups, including residual phenol, ether, carbonyl groups, or C–N groups, and the addition to CC bonds, subsequently forming a fluoride with different fluorine contents. The fluorine content increases as the fluorination temperature increases from 200 °C to 300 °C, but decreases at a fluorination temperature of 350 °C due to the decomposition of the fluorinated graphene. The prepared FG samples are used as cathode material for lithium primary batteries. The FG sample prepared at 300 °C gives a high specific capacity of 632 mAh g−1 and a discharge plateau of 2.35 V at a current density of 10 mA g−1, corresponding to a high energy density of 1485 Wh kg−1. View Full-Text
Keywords: fluorinated graphene; graphene; lithium primary battery; cathode material; fluorocarbon material fluorinated graphene; graphene; lithium primary battery; cathode material; fluorocarbon material
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Bi, X.; Li, Y.; Qiu, Z.; Liu, C.; Zhou, T.; Zhuo, S.; Zhou, J. Fluorinated Graphene Prepared by Direct Fluorination of N, O-Doped Graphene Aerogel at Different Temperatures for Lithium Primary Batteries. Materials 2018, 11, 1072.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top