Issue 46, 2014

Metal-free hybrid seawater fuel cell with an ether-based electrolyte

Abstract

In this work, the design of a new metal-free hybrid seawater fuel cell consisting of a flowing seawater cathode and a hard carbon anode was proposed. The electrochemical performance of the cell was investigated with two different electrolytes, i.e., 1 M NaClO4 in ethylene carbonate (EC)/propylene carbonate (PC), and 1 M NaCF3SO3 in tetraethylene glycol dimethyl ether (TEGDME). The TEGDME-based electrolyte showed a good cycle performance for 100 cycles, whereas EC/PC showed poor cycle stability after 30 cycles. Our results showed that a low conducting solid-electrolyte interphase (SEI) was formed with a thick layer, and the PVdF binder was degraded during the redox reaction when the EC/PC-based electrolyte was used. In contrast, the TEGDME-based electrolyte induced the formation of a more efficient SEI layer without degradation of the binder.

Graphical abstract: Metal-free hybrid seawater fuel cell with an ether-based electrolyte

Supplementary files

Article information

Article type
Communication
Submitted
19 9 2014
Accepted
07 10 2014
First published
27 10 2014

J. Mater. Chem. A, 2014,2, 19584-19588

Author version available

Metal-free hybrid seawater fuel cell with an ether-based electrolyte

H. Kim, J. Park, S. H. Sahgong, S. Park, J. Kim and Y. Kim, J. Mater. Chem. A, 2014, 2, 19584 DOI: 10.1039/C4TA04937C

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