Abstract
The composite materials contained high modulus carbon fiber (HMCF) were successfully prepared by employing a ball-milling process based on the coating treatment of polyethylene glycol (PEG), and their structures and morphologies were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques．The influences of PEG content on sulfur cathode capacity, cycle stability and rate performance were systematically studied. It was found that by the pre-coating of PEG, the cathode exhibited the high initial discharge specific capacity of 1312.5 mAh•g-1 at a current rate of 0.2C, and the reversible discharge capacity of 650 mAh•g-1 was obtained after 50 cycles at a current rate of 200 mA•g-1, showing the remarkably improved cycling stability.
Graphical Abstract
Keywords
Lithium-sulfur battery, sulfur cathode, high modulus carbon fiber, coated, polyethyl-ene glycol
Publication Date
2017-12-28
Online Available Date
2016-12-09
Revised Date
2016-11-15
Received Date
2016-09-28
Recommended Citation
Jie-cheng TAN, Yan-hong TIAN, Xue-jun ZHANG, Kai-le FAN.
Effect of PEG-Coating on Properties of Lithium-Sulfur Battery Cathode Material Containing Carbon Fiber Conductive Agent[J]. Journal of Electrochemistry,
2017
,
23(6): 160928.
DOI: 10.13208/j.electrochem.160928
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol23/iss6/14
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
