Novel MWCNT interconnected NiCo2O4 aerogels prepared by a supercritical CO2 drying method for ethanol electrooxidation in alkaline media

作者：Jayaseelan Santhana Sivabalan; Ko Tae Hoon; Radhakrishnan S; Yang Cheol Min; Kim Hak Yong; Kim Byoung Suhk^*

来源：International Journal of Hydrogen Energy, 2016, 41(31): 13504-13512.

DOI：10.1016/j.ijhydene.2016.05.175

• Nickel cobaltite
• Aerogels
• Electro-oxidation
• Ethanol oxidation
• Fuel cell

The design and development of an economic and highly active non-precious electrocatalyst for ethanol electro-oxidation is challenging due to expensiveness of the precursors as well as processes and non-Eco friendliness. In this study, a novel preparation of mesoporous NiCo2O4-MWCNT nanocomposite aerogels based on sol gel technique is proposed. Multiwall carbon nanotube (MWCNT)-supported NiCo2O4 nanocomposite aerogels as an efficient catalyst for the ethanol electro-oxidation is reported. The MWCNTs exhibit an interconnected fibrous network with uniform dispersion of NiCo2O4 nanoparticles. The effects of MWCNT concentration on the ethanol electro-oxidation of MWCNT/NiCo2O4 aerogels are studied. We found that using a proper loading of MWCNTs allowed us to reach higher current densities for the oxidation of ethanol in an alkaline media. The highly porous and fibrous MWCNT/NiCo2O4 aerogels are the promising electro-catalysts for the oxidation of a direct ethanol fuel cell.

• 出版日期2016-8-17