Nanostructure Fe-Co-B/bacterial cellulose based carbon nanofibers: An extremely efficient electrocatalyst toward oxygen evolution reaction

It is very crucial to design and prepare environmentally friendly, efficient and sustainable oxygen evolution reaction (OER) catalysts for water splitting reaction. In this work, a series of Fe-Co-B nanosheets with different molar ratio of Fe/Co precursor have been recombined with bacterial cellulose based carbon nanofiber (BCCNF) through simple electroless deposition method at room temperature. It is indicated that, when the Fe/Co molar ratio is 1:3, Fe-Co-B/BCCNF exhibits an excellent catalytic property with overpotential of only 160 mV at 10 mA cm(-2). Furthermore, it displays a prominent electrochemical stability, even over 30 h of OER process under alkaline condition. The strategy of designing 3D nanostructure and constructing metal-boride-based catalyst for OER provides valuable insights into efficient oxygen evolution.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.