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Preparation of mesoporous carbon for improved-performance lithium-sulfur battery

Preparation of mesoporous carbon for improved-performance lithium-sulfur battery A mesoporous carbon (MC) is prepared by the method of hard-template. Cathode materials (S/MC) for Li-S battery were synthesized. Properties of S, MC, and S/MC were characterized by BET, XRD, Raman, HRTEM, and FESEM. Electrochemical performances of the batteries were determined by AC impedance, cyclic voltammetry, and constant-current charging and discharging. Experiments show that MC, prepared with mass ratio CaCO3/PVA = 1/1.5, is the most suitable for Li-S battery. Thereby, the battery shows initial specific capacity of 1383.6 mAh/g and 881.6 mAh/g after 100 cycles, and the Coulombic efficiencies are both over 98% after 100 cycles at the current rate of 0.5 and 1 C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Preparation of mesoporous carbon for improved-performance lithium-sulfur battery

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References (31)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-017-2275-7
Publisher site
See Article on Publisher Site

Abstract

A mesoporous carbon (MC) is prepared by the method of hard-template. Cathode materials (S/MC) for Li-S battery were synthesized. Properties of S, MC, and S/MC were characterized by BET, XRD, Raman, HRTEM, and FESEM. Electrochemical performances of the batteries were determined by AC impedance, cyclic voltammetry, and constant-current charging and discharging. Experiments show that MC, prepared with mass ratio CaCO3/PVA = 1/1.5, is the most suitable for Li-S battery. Thereby, the battery shows initial specific capacity of 1383.6 mAh/g and 881.6 mAh/g after 100 cycles, and the Coulombic efficiencies are both over 98% after 100 cycles at the current rate of 0.5 and 1 C.

Journal

IonicsSpringer Journals

Published: Sep 24, 2017

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