Ni–Co hydroxide nanosheets on plasma-reduced Co-based metal–organic nanocages for electrocatalytic water oxidation

2019 ◽  
Vol 7 (9) ◽  
pp. 4950-4959 ◽  
Author(s):  
Wenxia Chen ◽  
Yiwei Zhang ◽  
Rong Huang ◽  
Yuming Zhou ◽  
Yangjin Wu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Oxygen Evolution ◽  
Chemical Stability ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Low Cost ◽  
High Electrical Conductivity ◽  
Formidable Challenge ◽  
Metal Organic ◽  
Energy Conversion Devices

Development of highly efficient and low-cost electrocatalysts for the oxygen evolution reaction (OER) with high electrical conductivity and chemical stability is critical for various energy conversion devices and systems, yet still remains a formidable challenge.

scholarly journals Spin-sate reconfiguration induced by alternating magnetic field for efficient oxygen evolution reaction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Gang Zhou ◽  
Peifang Wang ◽  
Hao Li ◽  
Bin Hu ◽  
Yan Sun ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Reaction Pathway ◽  
Low Cost ◽  
Orbital Interaction ◽  
New Paradigm ◽  
Metal Organic ◽  
Energy Conversion Devices

AbstractOxygen evolution reaction (OER) plays a determining role in electrochemical energy conversion devices, but challenges remain due to the lack of effective low-cost electrocatalysts and insufficient understanding about sluggish reaction kinetics. Distinguish from complex nano-structuring, this work focuses on the spin-related charge transfer and orbital interaction between catalysts and intermediates to accelerate catalytic reaction kinetics. Herein, we propose a simple magnetic-stimulation approach to rearrange spin electron occupation in noble-metal-free metal-organic frameworks (MOFs) with a feature of thermal-differentiated superlattice, in which the localized magnetic heating in periodic spatial distribution makes the spin flip occur at particular active sites, demonstrating a spin-dependent reaction pathway. As a result, the spin-rearranged Co0.8Mn0.2 MOF displays mass activities of 3514.7 A gmetal−1 with an overpotential of ~0.27 V, which is 21.1 times that of pristine MOF. Our findings provide a new paradigm for designing spin electrocatalysis and steering reaction kinetics.

scholarly journals Facet engineering in metal organic frameworks to improve their electrochemical activity for water oxidation

2020 ◽  
Vol 56 (31) ◽  
pp. 4316-4319 ◽  
Author(s):  
Jiawei Wan ◽  
Di Liu ◽  
Hai Xiao ◽  
Hongpan Rong ◽  
Sheng Guan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Low Cost ◽  
Metal Organic Frameworks ◽  
Electrochemical Activity ◽  
Excellent Activity ◽  
Metal Organic ◽  
2D Nanosheets

We present a facile and low-cost method to shape ZIF into 2D nanosheets with exposed (002) facets and discover that they exhibit excellent activity for oxygen evolution reaction.

A binuclear Co-based metal-organic framework towards efficient oxygen evolution reaction

2021 ◽  
Author(s):  
Ning Liu ◽  
Qiaoqiao Zhang ◽  
Jingqi Guan
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Research Interest ◽  
Metal Organic ◽  
Organic Framework

Seeking for low-cost and high-performance electrocatalysts for oxygen evolution reaction (OER) has drawn enormous research interest in the last few years. Reported herein is the topotactic construction of a binuclear...

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

2021 ◽  
Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Low Cost ◽  
Highly Active ◽  
Controllable Growth

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging.

Unlocking the potential of graphene for water oxidation using an orbital hybridization strategy

2018 ◽  
Vol 11 (2) ◽  
pp. 407-416 ◽  
Author(s):  
Yingfang Yao ◽  
Zhe Xu ◽  
Feng Cheng ◽  
Wenchao Li ◽  
Peixin Cui ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Low Cost ◽  
Orbital Hybridization

Graphene-based electrocatalytic materials are potential low-cost electrocatalysts for the oxygen evolution reaction (OER).

A Simple, Rapid and Scalable Synthesis Approach for Ultra-Small Size Transition Metal Selenides with Efficient Water Oxidation Performance

2021 ◽  
Author(s):  
Yue Shi ◽  
Dan Zhang ◽  
Hongfu Miao ◽  
Wen Zhang ◽  
XueKe Wu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Low Cost ◽  
Oxidation Performance ◽  
Scalable Synthesis ◽  
Metal Selenides ◽  
Synthesis Approach

Transition metal-based nanomaterials are regarded as promising catalysts due to low cost and abundant reserves. In particular, transition metal-based selenide exhibit excellent capability for oxygen evolution reaction (OER). However, the...

A novel phosphide derived from metal-organic frameworks as cost-effective electrocatalyst for oxygen evolution reaction

2021 ◽  
pp. 1-19
Author(s):  
Yi-Wen Yang ◽  
Bing-Ye Song
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Low Cost ◽  
Metal Organic Frameworks ◽  
Carbon Matrix ◽  
Metal Catalyst ◽  
Ni Doping ◽  
Positive Effects ◽  
Metal Organic

Abstract Developing an efficient, green and low-cost non noble metal catalyst towards oxygen evolution reaction (OER) has been urgent for new generation of sustainable energy technologies. Herein, the Co/Ni metal-organic frameworks (MOFs) derived metal phosphides/ carbon matrix composites are successfully produced by the precipitation-carbonization-phosphorization processes. The obtained samples are characterized and analyzed for structural and morphological investigation. Electrochemical tests for OER are performed in alkaline medium. The positive effects of P, Ni doping in MOFs on the structure and properties of composites have been analyzed. Benefitting from the unique structure of three-dimensional flower-like polyhedron with rich structure and higher porosity, the NiCo-P/NC catalyst exhibits the lowest overpotential of 0.32 V compared with the commercial IrO2 (0.34V) at 10 mA cm−2, as well as outstanding stability and kinetic mechanism. Besides, the cost of the proposed novel material is calculated to be 4.337 US$/g, which is only 1.57 % of that of commercial IrO2 (276 US$/g). The results obtained from the MOF-derived low-cost and high-efficiency OER catalyst would provide a new perspective on application of electrochemical storage and batteries.

In-Situ Etch Engineering Ru Doped NiFe(OH)x/NiFe-MOF Nanocomposite for Boosting Oxygen Evolution Reaction

2021 ◽  
Author(s):  
Dongmei Liu ◽  
Hui Xu ◽  
Cheng Wang ◽  
Changqing Ye ◽  
Rui Yu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Electronic Conductivity ◽  
Metal Organic Frameworks ◽  
Practical Applications ◽  
The Poor ◽  
Metal Organic

Metal-organic frameworks (MOFs) have been deemed as promising electrocatalysts for electrochemical water oxidation, however, the poor electronic conductivity and stability are still intractable issues hindering the practical applications. Herein, an...

Hierarchical porous Co3O4@CoxFe3−xO4film as an advanced electrocatalyst for oxygen evolution reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 8882-8886 ◽  
Author(s):  
Yaohang Gu ◽  
Dandan Jia ◽  
Youshun Peng ◽  
Shitao Song ◽  
Yongguang Zhao ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Highly Efficient ◽  
Hierarchical Porous ◽  
Energy Conversion Devices

Fabricating a delicate structure for water oxidation is critical for developing highly efficient electrocatalysts, which hold significant promise for energy conversion devices.

In situ identification of the electrocatalytic water oxidation behavior of a nickel-based metal–organic framework nanoarray

2021 ◽  
Author(s):  
Fanpeng Cheng ◽  
Zhongjian Li ◽  
Lin Wang ◽  
Bin Yang ◽  
Jianguo Lu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Behavior ◽  
Metal Organic Framework ◽  
Behavior Changes ◽  
Direct Identification ◽  
Metal Organic ◽  
Organic Framework

Direct identification of electrocatalytic behavior changes for highly efficient metal–organic framework based oxygen evolution reaction electrocatalysts is explored.

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