Issue 31, 2014

Lithium–tellurium batteries based on tellurium/porous carbon composite

Abstract

For the first time, lithiation/delithiation behavior of tellurium at room temperature was investigated using tellurium/porous carbon (Te/C) composite electrodes. The Te/C composite is synthesized by the infusion of liquid tellurium into a porous carbon host at the high temperature of 600 °C under vacuum. Owing to the physical confinement of Te by porous carbon matrix, the Te/C electrode is capable of delivering a reversible volumetric capacity as high as 1400 mAh cm−3 (224 mAh g−1) at 312 mA cm−3 (50 mA g−1) current and maintains 87% of its initial capacity after 1000 cycles. Even when the current increases to 12480 mA cm−3 (2000 mA g−1), the Te/C electrode can still provide a volumetric capacity of 500 mAh cm−3. The high volumetric capacity, long cycle life and good rate capability make Te/C composite a promising electrode for Li-ion batteries.

Graphical abstract: Lithium–tellurium batteries based on tellurium/porous carbon composite

Article information

Article type
Paper
Submitted
25 abr 2014
Accepted
02 jun 2014
First published
03 jun 2014

J. Mater. Chem. A, 2014,2, 12201-12207

Author version available

Lithium–tellurium batteries based on tellurium/porous carbon composite

Y. Liu, J. Wang, Y. Xu, Y. Zhu, D. Bigio and C. Wang, J. Mater. Chem. A, 2014, 2, 12201 DOI: 10.1039/C4TA02075H

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