Ultra-thin wrinkled NiOOH–NiCr2O4 nanosheets on Ni foam: an advanced catalytic electrode for oxygen evolution reaction

2018 ◽  
Vol 54 (39) ◽  
pp. 4987-4990 ◽  
Author(s):  
Jinxiu Zhao ◽  
Xiang Ren ◽  
Qingzhi Han ◽  
Dawei Fan ◽  
Xu Sun ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Alkaline Media ◽  
Ni Foam ◽  
Catalytic Current

NiOOH–NiCr2O4/NF shows high activity for the OER in alkaline media, achieving a catalytic current density of 20 mA cm−2 at an overpotential of 271 mV.

A Co-MOF nanosheet array as a high-performance electrocatalyst for the oxygen evolution reaction in alkaline electrolytes

2018 ◽  
Vol 5 (2) ◽  
pp. 344-347 ◽  
Author(s):  
Xiaoping Zhang ◽  
Weidi Sun ◽  
Huitong Du ◽  
Rong-Mei Kong ◽  
Fengli Qu
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Ni Foam ◽  
Catalytic Current ◽  
Nanosheet Array ◽  
Alkaline Electrolytes

A Co-MOF nanosheet array on Ni foam (Co-MOF/NF) acts as a superior electrocatalyst for the oxygen evolution reaction, needing an overpotential of only 311 mV to drive a geometrical catalytic current density of 50 mA cm−2 in 1.0 M KOH.

Cobalt–borate nanowire array as a high-performance catalyst for oxygen evolution reaction in near-neutral media

2017 ◽  
Vol 5 (16) ◽  
pp. 7291-7294 ◽  
Author(s):  
Xiang Ren ◽  
Ruixiang Ge ◽  
Yong Zhang ◽  
Danni Liu ◽  
Dan Wu ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Nanowire Array ◽  
Catalytic Current ◽  
Neutral Media ◽  
Ti Mesh

As a durable catalyst, cobalt–borate nanowire array on Ti mesh exhibits high activity for water oxidation in near-neutral media, thereby achieving a geometrical catalytic current density of 10 mA cm−2 at an overpotential of 420 mV.

A Zn-doped Ni3S2nanosheet array as a high-performance electrochemical water oxidation catalyst in alkaline solution

2017 ◽  
Vol 53 (92) ◽  
pp. 12446-12449 ◽  
Author(s):  
Qin Liu ◽  
Lisi Xie ◽  
Zhiang Liu ◽  
Gu Du ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Alkaline Solution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Oxidation Catalyst ◽  
Ni Foam ◽  
Catalytic Current ◽  
Nanosheet Array

A Zn-doped Ni3S2nanosheet array on Ni foam (Zn-Ni3S2/NF) acts as a high-performance and durable electrocatalyst for the oxygen evolution reaction in 1.0 M KOH, driving a catalytic current density of 100 mA cm−2at an overpotential of 330 mV, 90 mV less than that for Ni3S2/NF.

scholarly journals Effects of Annealing Temperature on the Oxygen Evolution Reaction Activity of Copper–Cobalt Oxide Nanosheets

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 657
Author(s):  
Geul Han Kim ◽  
Yoo Sei Park ◽  
Juchan Yang ◽  
Myeong Je Jang ◽  
Jaehoon Jeong ◽  
...  
Keyword(s):  
High Activity ◽  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Cobalt Hydroxide ◽  
Ni Foam ◽  
Electron Conduction

Developing high performance, highly stable, and low-cost electrodes for the oxygen evolution reaction (OER) is challenging in water electrolysis technology. However, Ir- and Ru-based OER catalysts with high OER efficiency are difficult to commercialize as precious metal-based catalysts. Therefore, the study of OER catalysts, which are replaced by non-precious metals and have high activity and stability, are necessary. In this study, a copper–cobalt oxide nanosheet (CCO) electrode was synthesized by the electrodeposition of copper–cobalt hydroxide (CCOH) on Ni foam followed by annealing. The CCOH was annealed at various temperatures, and the structure changed to that of CCO at temperatures above 250 °C. In addition, it was observed that the nanosheets agglomerated when annealed at 300 °C. The CCO electrode annealed at 250 °C had a high surface area and efficient electron conduction pathways as a result of the direct growth on the Ni foam. Thus, the prepared CCO electrode exhibited enhanced OER activity (1.6 V at 261 mA/cm2) compared to those of CCOH (1.6 V at 144 mA/cm2), Co3O4 (1.6 V at 39 mA/cm2), and commercial IrO2 (1.6 V at 14 mA/cm2) electrodes. The optimized catalyst also showed high activity and stability under high pH conditions, demonstrating its potential as a low cost, highly efficient OER electrode material.

NiFe (sulfur)oxyhydroxide porous nanoclusters/Ni foam composite electrode drives a large-current-density oxygen evolution reaction with an ultra-low overpotential

2019 ◽  
Vol 7 (32) ◽  
pp. 18816-18822 ◽  
Author(s):  
Yanqing Wang ◽  
Yuemeng Li ◽  
Liping Ding ◽  
Zhe Chen ◽  
Aaron Ong ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Composite Electrode ◽  
Ni Foam ◽  
Large Current ◽  
Foam Composite ◽  
Large Current Density ◽  
Low Overpotential

A NiFe (sulfur)oxyhydroxide porous nanoclusters/Ni foam composite electrode was fabricated and can drive a large-current-density oxygen evolution reaction with an ultra-low overpotential.

In situ growth of layered double hydroxides on boehmite AlOOH for active and stable oxygen evolution in alkaline media

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10348-10357 ◽  
Author(s):  
Shijie He ◽  
Hua Lin
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Alkaline Media ◽  
In Situ Growth ◽  
Stable Oxygen ◽  
Double Hydroxides

The composition with V- or Ni-doped AlOOH nanorods drives FeNi and FeCo layered double hydroxides to obtain both high activity and better stability for the oxygen evolution reaction.

Hierarchical Fe-doped Ni3Se4 ultrathin nanosheets as an efficient electrocatalyst for oxygen evolution reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 5163-5170 ◽  
Author(s):  
Jing Du ◽  
Zehua Zou ◽  
Chen Liu ◽  
Cailing Xu
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Solvothermal Synthesis ◽  
Ni Foam ◽  
Tafel Slope ◽  
Ultrathin Nanosheets ◽  
Selenization Process ◽  
A Current

Hierarchical Fe-doped Ni3Se4 ultrathin nanosheets are synthesized via solvothermal synthesis and a topotactic selenization process. The prepared (Ni,Fe)3Se4 ultrathin nanosheets supported on Ni foam needed an overpotential of only 225 mV to achieve a current density of 10 mA cm−2 and a small Tafel slope of about 41 mV dec−1.

A Cu2Se–Cu2O film electrodeposited on titanium foil as a highly active and stable electrocatalyst for the oxygen evolution reaction

2018 ◽  
Vol 54 (39) ◽  
pp. 4979-4982 ◽  
Author(s):  
Hu Chen ◽  
Yan Gao ◽  
Lu Ye ◽  
Yanan Yao ◽  
Xuyang Chen ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Titanium Foil ◽  
Catalytic Current ◽  
Cathodic Electrodeposition ◽  
Carbonate Buffer ◽  
Highly Active ◽  
High Durability ◽  
Cu2o Film

Cu2Se–Cu2O/TF electrode prepared via a simple and fast cathodic electrodeposition method. The electrode achieved a catalytic current density of 10 mA cm−2 for the OER at relatively low overpotential of 465 mV in 0.2 M carbonate buffer (pH = 11.0) and displayed a high durability over 20 h.

Prussian blue analog-derived 2D ultrathin CoFe2O4 nanosheets as high-activity electrocatalysts for the oxygen evolution reaction in alkaline and neutral media

2019 ◽  
Vol 7 (13) ◽  
pp. 7328-7332 ◽  
Author(s):  
Hengyi Fang ◽  
Taizhong Huang ◽  
Dong Liang ◽  
Ming Qiu ◽  
Yue Sun ◽  
...  
Keyword(s):  
Prussian Blue ◽  
High Activity ◽  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Oxygen Vacancies ◽  
High Current Density ◽  
High Current ◽  
Prussian Blue Analog ◽  
Neutral Media

Oxygen vacancies on CoFe2O4 NSs and lattice oxygens that participate in the reaction deliver a high current density and low overpotential for the OER.

Nickel–copper bimetal organic framework nanosheets as a highly efficient catalyst for oxygen evolution reaction in alkaline media

2018 ◽  
Vol 42 (11) ◽  
pp. 8346-8350 ◽  
Author(s):  
Xiangjiang Zheng ◽  
Xinyue Song ◽  
Xiaomeng Wang ◽  
Zhenhua Zhang ◽  
Zhaomei Sun ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Alkaline Media ◽  
Ni Foam ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Nickel Copper ◽  
Organic Framework

NiCu MOF nanosheets on Ni foam (NiCu-MOFNs/NF) exhibit superior catalytic OER performance, needing an overpotential of 309 mV at 100 mA cm−2 in 1.0 M KOH.

Sign in / Sign up

Export Citation Format

Share Document