CNT/ CoCr- Layered Double Hydroxides as High efficient Oxygen Evolution Catalysts
Paper ID : 1317-ICNS
Authors:
Leila Dashti1, Leila Jafari Foruzin *2, Zolfaghar Rezvani2
1Azarbaijan Shahid Madani University
2Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University
Abstract:
The design of highly efficient, durable, and earth-abundant catalysts for the oxygen evolution reaction is crucial to a variety of important energy conversion and storage processes. Here, we use carbon nano tube (CNT, ∼5 nm) to form hybrids with the cobalt−chromium layered double hydroxide (CoCr-LDH) nanoplates and characterized using X-ray diffraction, Fourier transform infrared spectroscopy, diffuse reflectance spectroscopy. The CNT/ CoCr-LDH composise were then used as the efficient electrocatalyst materials for water oxidation in KOH 0.1M media.
The resulting CNT/ CoCr-LDH composise exhibits high electrocatalytic activity (with an overpotential of ∼ 46 mV in 0.1 M KOH) and stability for oxygen evolution, which almost exceeds the values of all previously reported Co-Cr compounds and were comparable to those of the most active perovskite-based catalyst. In this condition, the CNT/ CoCr-LDH composise displayed improved electrocatalytic activity in comparison with CoCr-LDH due to present CNT at composite which enhanced the conductivity of the synthesized LDH.
Keywords:
“Water oxidation”, “Layered double hydroxide,“Nanocomposite”, “Carbon nanotube”
Status : Abstract Accepted (Poster Presentation)