Engineering borate modified NiFe layer double hydroxide nanoarrays as “hydroxyl ions hungry” electrocatalysts for enhanced oxygen evolution

2019 ◽  
Vol 55 (9) ◽  
pp. 1334-1337 ◽  
Author(s):  
Zemin Sun ◽  
Yutong Wang ◽  
Liu Lin ◽  
Mengwei Yuan ◽  
Heyun Jiang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Hydrothermal Reaction ◽  
Electrode Structure ◽  
Layer Double Hydroxide ◽  
Nife Layer ◽  
Double Hydroxide

A simple and facile “hydroxyl ions hungry” electrode structure was prepared by a two-step hydrothermal reaction to obtain BA-NiFe-LDHs/CP. It exhibited excellent OER catalytic activity.

Enabling and Inducing Oxygen Vacancies in Cobalt Iron Layer Double Hydroxide via Selenization as Precatalysts for Electrocatalytic Hydrogen and Oxygen Evolution Reactions

2021 ◽  
Vol 60 (3) ◽  
pp. 2023-2036
Author(s):  
Arun Karmakar ◽  
Kannimuthu Karthick ◽  
Sangeetha Kumaravel ◽  
Selvasundarasekar Sam Sankar ◽  
Subrata Kundu
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Vacancies ◽  
Iron Layer ◽  
Layer Double Hydroxide ◽  
Cobalt Iron ◽  
Double Hydroxide

Rapid mass production of iron nickel oxalate nanorods for efficient oxygen evolution reaction catalysis

2021 ◽  
Author(s):  
Huixia Hu ◽  
xiang lei ◽  
Shumei Li ◽  
Ruzhen PENG ◽  
Jinliang Wang
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Mass Production ◽  
Metal Organic Framework ◽  
Iron Nickel ◽  
Metal Organic ◽  
Double Hydroxide ◽  
Rapid Mass

NiFe layered-double-hydroxide (NiFe-LDH) and the NiFe metal–organic framework (NiFe-MOF) demonstrates the best catalytic activity among NiFe-based materials for the oxygen evolution reaction (OER), which is important for efficient hydrogen production....

Engineering NiFe layered double hydroxide by valence control and intermediate stabilization toward the oxygen evolution reaction

2020 ◽  
Vol 8 (48) ◽  
pp. 26130-26138
Author(s):  
Zhenxing Xu ◽  
Yiran Ying ◽  
Guoge Zhang ◽  
Kongzhe Li ◽  
Yan Liu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Valence Control ◽  
Double Hydroxide

The electronic structure of NiFe layered double hydroxide was engineered by valence control and intermediate stabilization for enhanced catalytic activity.

Noncovalent phosphorylation of CoCr layered double hydroxide nanosheets with improved electrocatalytic activity for the oxygen evolution reaction

2019 ◽  
Vol 55 (80) ◽  
pp. 12076-12079 ◽  
Author(s):  
Xiang Chen ◽  
Haonan Wang ◽  
Bin Xia ◽  
Ruru Meng
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Double Hydroxide

Noncovalent phosphorylation of CoCr layered double hydroxide (LDH) was prepared by using P2O5 dissolved in isopropanol as a precursor, which showed improved catalytic activity for oxygen evolution reaction compared with pristine CoCr LDH.

S Doping Optimized Intermediate Energetics of FeCoOOh for Enhanced Oxygen Evolution Catalytic Activity

2020 ◽  
Author(s):  
Ding Yuan ◽  
Yuhai Dou ◽  
Chun-Ting He ◽  
Linping Yu ◽  
Li Xu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution

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...

Research of Thermodynamics and Properties of Pb/WC-Zro2 Inert Electrodes Used in Zinc Electrodeposition

2010 ◽  
Vol 136 ◽  
pp. 43-47
Author(s):  
Rui Dong Xu ◽  
Jun Li Wang ◽  
Jian Feng Zhou
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Metal Matrix ◽  
Stable Region ◽  
Alloy Electrode ◽  
Second Phase ◽  
Acid Solutions ◽  
Zro2 Particle ◽  
Zinc Electrodeposition ◽  
Inert Electrode

This research is to fabricate a Pb/WC-ZrO2 inert electrode used in zinc electrodeposition. First, the potential-pH diagram of Pb-H2O system was constructed and the thermodynamic stable region was calibrated in the diagram. On the basis, the co-deposition of Pb, WC and ZrO2 particles from fluorboric acid solutions was realized on the surface of Pb-4wt%Sb substrate. The results show that deposition amounts of ZrO2 and WC particles in the inert electrodes increase with increasing ZrO2 concentrations in the bath, WC particle is easier to deposit into the inert electrodes than ZrO2 particle. The distribution of WC and ZrO2 particles as the second phase within metal matrix Pb is very uniform. Compared with Pb-1wt%Ag alloy electrode, Pb/9.91wt%WC-3.62wt%ZrO2 inert electrode possesses better catalytic activity of oxygen evolution.

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