%0 Journal Article %A Wang, An-Liang %A Dong, Yu-Tao %A Li, Mei %A Liang, Chaolun %A Li, Gao-Ren %D 2017 %T In Situ Derived NixFe1–xOOH/NiFe/NixFe1–xOOH Nanotube Arrays from NiFe Alloys as Efficient Electrocatalysts for Oxygen Evolution %U https://acs.figshare.com/articles/journal_contribution/In_Situ_Derived_Ni_sub_i_x_i_sub_Fe_sub_1_i_x_i_sub_OOH_NiFe_Ni_sub_i_x_i_sub_Fe_sub_1_i_x_i_sub_OOH_Nanotube_Arrays_from_NiFe_Alloys_as_Efficient_Electrocatalysts_for_Oxygen_Evolution/5443198 %R 10.1021/acsami.7b10609.s001 %2 https://acs.figshare.com/ndownloader/files/9410680 %K Ni %K Oxygen Evolution Herein %K oxygen evolution reaction %K Fe %K carbon fiber cloth %K SNTA %K CFC %K OOH %K oxygen evolution process %K alloy nanotube arrays %K OER electrocatalysts %X Herein, NixFe1–xOOH/NiFe/NixFe1–xOOH sandwich-structured nanotube arrays (SNTAs) supported on carbon fiber cloth (CFC) (NixFe1–xOOH/NiFe/NixFe1–xOOH SNTAs–CFC) have been developed as flexible high-performance oxygen evolution reaction (OER) catalysts by a facile in situ electrochemical oxidation of NiFe metallic alloy nanotube arrays during oxygen evolution process. Benefiting from the advantages of high conductivity, hollow nanotube array, and porous structure, NixFe1–xOOH/NiFe/NixFe1–xOOH SNTAs–CFC exhibited a low overpotential of ∼220 mV at the current density of 10 mA cm–2 and a small Tafel slope of 57 mV dec–1 in alkaline solution, both of which are smaller than those of most OER electrocatalysts. Furthermore, NixFe1–xOOH/NiFe/NixFe1–xOOH SNTAs–CFC exhibits excellent stability at 100 mA cm–2 for more than 30 h. It is believed that the present work can provide a valuable route for the design and synthesis of inexpensive and efficient OER electrocatalysts. %I ACS Publications