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Open AccessArticle

Carbon Nanotube-Graphene Hybrid Electrodes with Enhanced Thermo-Electrochemical Cell Properties

Institute of Micro-Nano Structures & Optoelectronics, Wenzhou University, Wenzhou 325035, China
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Nanomaterials 2019, 9(10), 1450; https://doi.org/10.3390/nano9101450
Received: 20 September 2019 / Revised: 6 October 2019 / Accepted: 9 October 2019 / Published: 12 October 2019
Carbon nanotube-Graphene (CNT-Gr) hybrids were prepared on stainless steel substrates by the electrophoretic deposition (EPD) to make the thermo-electrochemical cell (TEC) electrodes. The as-obtained TEC electrodes were investigated by the SEM, XRD, Raman spectroscopy, tensile, and surface resistance tests. These hybrid electrodes exhibited significant improved TEC performances compared to the pristine CNT electrode. In addition, these hybrid electrodes could be optimized by tuning the contents of the graphene in the hybrids, and the CNT-Gr-0.1 hybrid electrode showed the best TEC performance with the current density of 62.8 A·m−2 and the power density of 1.15 W·m−2, 30.4% higher than the CNT electrode. The enhanced TEC performance is attributed to improvements in the electrical and thermal conductivities, as well as the adhesion between the CNT-Gr hybrid and the substrate. Meanwhile, the relative conversion efficiency of the TECs can reach 1.35%. The investigation suggests that the growth of CNT-Gr hybrid electrodes by the EPD technique may offer a promising approach for practical applications of the carbon nanomaterial-based TEC electrodes. View Full-Text
Keywords: carbon nanotube; graphene; hybrid electrode; electrophoretic deposition; adhesion; thermo-electrochemical cell carbon nanotube; graphene; hybrid electrode; electrophoretic deposition; adhesion; thermo-electrochemical cell
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Zhou, Y.; Qian, W.; Huang, W.; Liu, B.; Lin, H.; Dong, C. Carbon Nanotube-Graphene Hybrid Electrodes with Enhanced Thermo-Electrochemical Cell Properties. Nanomaterials 2019, 9, 1450.

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