Self-supported nickel iron oxide nanospindles with high hydrophilicity for efficient oxygen evolution

2019 ◽  
Vol 55 (73) ◽  
pp. 10860-10863 ◽  
Author(s):  
Jinlong Liu ◽  
Huimin Yuan ◽  
Zhenyu Wang ◽  
Jun Li ◽  
Mingyang Yang ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Hydrothermal Reaction ◽  
Nickel Iron ◽  
One Step

Highly hydrophilic NiFe2O4 nanospindle arrays are directly grown on FeNi3 foam through a facile one-step hydrothermal reaction, achieving improved activity and excellent durability as an integrated catalytic electrode for oxygen evolution reaction.

scholarly journals Porous Nickel–Iron Oxide as a Highly Efficient Electrocatalyst for Oxygen Evolution Reaction

2015 ◽  
Vol 2 (10) ◽  
pp. 1500199 ◽  
Author(s):  
Jing Qi ◽  
Wei Zhang ◽  
Ruijuan Xiang ◽  
Kaiqiang Liu ◽  
Hong‐Yan Wang ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Porous Nickel ◽  
Nickel Iron ◽  
Highly Efficient

One-step synthesis of nickel–iron layered double hydroxides with tungstate acid anions via flash nano-precipitation for the oxygen evolution reaction

2019 ◽  
Vol 3 (1) ◽  
pp. 237-244 ◽  
Author(s):  
Xueyan Xue ◽  
Feng Yu ◽  
Banghua Peng ◽  
Gang Wang ◽  
Yin Lv ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Precious Metal ◽  
Two Dimensional ◽  
Nickel Iron ◽  
Rich Diversity ◽  
One Step ◽  
Double Hydroxide ◽  
Double Hydroxides

Layered double hydroxide materials with two-dimensional structures and rich diversity have proved to be very promising candidates for non-precious metal electrocatalysis of the oxygen evolution reaction.

scholarly journals Ni-Fe-Cr-Oxides: An Efficient Catalyst Activated by Visible Light for the Oxygen Evolution Reaction

2020 ◽  
Vol 234 (4) ◽  
pp. 633-643 ◽  
Author(s):  
Olga A. Krysiak ◽  
Grzegorz Cichowicz ◽  
Felipe Conzuelo ◽  
Michal K. Cyranski ◽  
Jan Augustynski
Keyword(s):  
Visible Light ◽  
Metal Oxides ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Anodic Polarization ◽  
Preparation Method ◽  
Efficient Catalyst ◽  
Nickel Iron ◽  
Earth Abundant ◽  
One Step

AbstractThe oxygen evolution reaction (OER) is a thermodynamically and kinetically demanding process, therefore it requires the use of catalysts enabling to meet technologically relevant conditions. Here, we realized efficient OER catalysts fabricated using relatively cheap precursors consisting of earth-abundant metal oxides, i.e. nickel, iron, and chromium, and a simple one-step preparation method. It is shown that the catalyst is activated by anodic polarization under irradiation with visible light, which allows decreasing the overpotential necessary for the OER.

scholarly journals Postsynthetic treatment of nickel–iron layered double hydroxides for the optimum catalysis of the oxygen evolution reaction

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Daire Tyndall ◽  
Sonia Jaskaniec ◽  
Brian Shortall ◽  
Ahin Roy ◽  
Lee Gannon ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Size Control ◽  
Operating Conditions ◽  
Nickel Iron ◽  
Treatment Techniques ◽  
Site Density ◽  
Synthetic Approaches ◽  
Double Hydroxide ◽  
Double Hydroxides

AbstractNickel–iron-layered double hydroxide (NiFe LDH) platelets with high morphological regularity and submicrometre lateral dimensions were synthesized using a homogeneous precipitation technique for highly efficient catalysis of the oxygen evolution reaction (OER). Considering edge sites are the point of activity, efforts were made to control platelet size within the synthesized dispersions. The goal is to controllably isolate and characterize size-reduced NiFe LDH particles. Synthetic approaches for size control of NiFe LDH platelets have not been transferable based on published work with other LDH materials and for that reason, we instead use postsynthetic treatment techniques to improve edge-site density. In the end, size-reduced NiFe LDH/single-wall carbon nanotube (SWCNT) composites allowed to further reduce the OER overpotential to 237 ± 7 mV (<L> = 0.16 ± 0.01 μm, 20 wt% SWCNT), which is one of the best values reported to date. This approach as well improved the long-term activity of the catalyst in operating conditions.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

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