A hierarchical CoTe2–MnTe2 hybrid nanowire array enables high activity for oxygen evolution reactions

2018 ◽  
Vol 54 (78) ◽  
pp. 10993-10996 ◽  
Author(s):  
Ziqiang Wang ◽  
Xiang Ren ◽  
Liang Wang ◽  
Guanwei Cui ◽  
Hongjing Wang ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Active Sites ◽  
Nanowire Array ◽  
Alkaline Media ◽  
Oxidation Activity

A hierarchical CoTe2–MnTe2 hybrid nanowire array exhibits enhanced water oxidation activity in alkaline media due to its excellent conductivity and rich active sites.

Strong hydrophilicity NiS2/Fe7S8 heterojunctions encapsulated in N-doped carbon nanotubes for enhanced oxygen evolution reaction

2020 ◽  
Vol 56 (10) ◽  
pp. 1489-1492 ◽  
Author(s):  
Jing-Yu Wang ◽  
Wen-Ting Liu ◽  
Xiao-Peng Li ◽  
Ting Ouyang ◽  
Zhao-Qing Liu
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxidation Activity

The construction of active sites with excellent water oxidation activity is of great significance in the design of OER electrocatalysts.

Adjusting the electronic structure by Ni incorporation: a generalized in situ electrochemical strategy to enhance water oxidation activity of oxyhydroxides

2017 ◽  
Vol 5 (26) ◽  
pp. 13336-13340 ◽  
Author(s):  
Yu Liang ◽  
Yifu Yu ◽  
Yi Huang ◽  
Yanmei Shi ◽  
Bin Zhang
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
High Oxygen ◽  
Alkaline Media ◽  
Oxidation Activity ◽  
Electrocatalytic Performance

An in situ electrochemical Ni-incorporating strategy is developed to tailor the electronic structure of β-FeOOH and the as-prepared Ni incorporated β-FeOOH exhibits a high oxygen evolution electrocatalytic performance in alkaline media.

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.

In situ development of amorphous Mn–Co–P shell on MnCo2O4 nanowire array for superior oxygen evolution electrocatalysis in alkaline media

2018 ◽  
Vol 54 (9) ◽  
pp. 1077-1080 ◽  
Author(s):  
Jingrui Han ◽  
Shuai Hao ◽  
Zhiang Liu ◽  
Abdullah M. Asiri ◽  
Xuping Sun ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Water Oxidation ◽  
Nanowire Array ◽  
Alkaline Media ◽  
Core Shell ◽  
Ti Mesh

Core–shell Mn–Co–P@MnCo2O4 nanoarray on Ti mesh (Mn–Co–P@MnCo2O4/Ti) acts as a durable water oxidation electrocatalyst with an overpotential of 269 mV to drive 10 mA cm−2 in 1.0 M KOH.

An Fe(TCNQ)2 nanowire array on Fe foil: an efficient non-noble-metal catalyst for the oxygen evolution reaction in alkaline media

2018 ◽  
Vol 54 (18) ◽  
pp. 2300-2303 ◽  
Author(s):  
Maowen Xie ◽  
Xiaoli Xiong ◽  
Lin Yang ◽  
Xifeng Shi ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Current Density ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Nanowire Array ◽  
Alkaline Media ◽  
Metal Catalyst ◽  
Noble Metal Catalyst ◽  
A Current

An Fe-(tetracyanoquinodimethane)2 nanowire array in situ developed on Fe foil (Fe(TCNQ)2/Fe) acts as an efficient and durable electrocatalyst for water oxidation, needing an overpotential of 340 mV to attain a current density of 10 mA cm−2 in 1.0 M KOH.

Oriental and robust anchoring of Fe via anodic interfacial coordination assembly on ultrathin Co hydroxides for efficient water oxidation

Nanoscale ◽  
2021 ◽  
Author(s):  
Ya-Nan Zhou ◽  
Ruo-Yao Fan ◽  
Yu-Ning Cao ◽  
Hui-Ying Wang ◽  
Bin Dong ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites

The oriental distribution and strong conjunction of Fe active sites in multiple metals hydroxides are very crucial to modulate the activity and stability for efficient oxygen evolution reaction (OER). Whereas,...

scholarly journals Coordination modulation of iridium single-atom catalyst maximizing water oxidation activity

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Zhanwu Lei ◽  
Wenbin Cai ◽  
Yifei Rao ◽  
Kuan Wang ◽  
Yuyuan Jiang ◽  
...  
Keyword(s):  
High Activity ◽  
Current Density ◽  
Water Oxidation ◽  
Distribution Density ◽  
High Surface ◽  
Single Atom ◽  
Surface Distribution ◽  
Oxidation Activity ◽  
Nanosheet Arrays ◽  
A Current

AbstractSingle-atom catalysts (SACs) have attracted tremendous research interests in various energy-related fields because of their high activity, selectivity and 100% atom utilization. However, it is still a challenge to enhance the intrinsic and specific activity of SACs. Herein, we present an approach to fabricate a high surface distribution density of iridium (Ir) SAC on nickel-iron sulfide nanosheet arrays substrate (Ir1/NFS), which delivers a high water oxidation activity. The Ir1/NFS catalyst offers a low overpotential of ~170 mV at a current density of 10 mA cm−2 and a high turnover frequency of 9.85 s−1 at an overpotential of 300 mV in 1.0 M KOH solution. At the same time, the Ir1/NFS catalyst exhibits a high stability performance, reaching a lifespan up to 350 hours at a current density of 100 mA cm−2. First-principles calculations reveal that the electronic structures of Ir atoms are significantly regulated by the sulfide substrate, endowing an energetically favorable reaction pathway. This work represents a promising strategy to fabricate high surface distribution density single-atom catalysts with high activity and durability for electrochemical water splitting.

scholarly journals Template-free synthesis of mesoporous manganese oxides with catalytic activity in the oxygen evolution reaction

2017 ◽  
Vol 1 (4) ◽  
pp. 780-788 ◽  
Author(s):  
Suoyuan Lian ◽  
Michelle P. Browne ◽  
Carlota Domínguez ◽  
Serban N. Stamatin ◽  
Hugo Nolan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Manganese Oxides ◽  
Template Free ◽  
Highly Porous

Solvothermally synthesised MnCO3 leads to template-free formation of highly porous, defect-rich MnO2 with high activity in water oxidation.

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.

Capturing the active sites of multimetallic (oxy)hydroxides for the oxygen evolution reaction

2020 ◽  
Vol 13 (11) ◽  
pp. 4225-4237
Author(s):  
Xin Bo ◽  
Rosalie K Hocking ◽  
Si Zhou ◽  
Yibing Li ◽  
Xianjue Chen ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
Alkaline Water ◽  
Catalytic Active Sites

The catalytic active sites of NiFe and NiFeCr (oxy)hydroxides are revealed by operando spectroscopic techonologies for alkaline water oxidation.

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