Issue 34, 2014

Mesoporous carbon from biomass: one-pot synthesis and application for Li–S batteries

Abstract

A new one-pot and activation-free method was developed to synthesize high porosity biomass-derived carbon (HPBC) with uniform mesopores through sol–gel route. The as-prepared HPBC material possesses high surface area up to 949.85 m2 g−1 and high pore volume of 3.14 cm3 g−1. Cathodes with sulfur content of 81.29 wt% for Li–S batteries were prepared using the HPBC as a conductive matrix and a certain amount of space was preserved to accommodate the volume change during lithiation. When evaluated for electrochemical properties, the uniform pore structure of the HPBC afforded superior cyclability and rate performance for the Li–S batteries. An initial capacity of 922 mA h g−1 and a reversible capacity of 683 mA h g−1 were delivered after 100 cycles at a current density of 0.5 C. Specifically, a reversible capacity of 483 mA h g−1 was retained over 300 cycles at a current density of 1 C.

Graphical abstract: Mesoporous carbon from biomass: one-pot synthesis and application for Li–S batteries

Supplementary files

Article information

Article type
Paper
Submitted
30 Apr 2014
Accepted
16 Jun 2014
First published
24 Jun 2014

J. Mater. Chem. A, 2014,2, 13916-13922

Mesoporous carbon from biomass: one-pot synthesis and application for Li–S batteries

J. Li, F. Qin, L. Zhang, K. Zhang, Q. Li, Y. Lai, Z. Zhang and J. Fang, J. Mater. Chem. A, 2014, 2, 13916 DOI: 10.1039/C4TA02154A

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