Highly Efficient Bifunctional Electrocatalyst (ORR/OER) Derived from GO Functionalized with Carbonyl, Hydroxyl and Epoxy Groups for Rechargeable Zinc-Air Batteries

2021 ◽  
Author(s):  
Lei Gu ◽  
Xuan-Long Sun ◽  
Jiao Zhao ◽  
Bing-Quan Gong ◽  
Zheng-Lv Bao ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Activity ◽  
Water Splitting ◽  
High Performance ◽  
Low Cost ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Air Battery ◽  
Epoxy Groups ◽  
Zinc Air Batteries

Electrocatalysts play an important role in fuel cells, metal-air battery and water-splitting devices. The development of low cost, high activity and high performance bifunctional electrocatalysts for ORR and OER is...

Electrodeposition of Ni3Se2/MoSex as a bifunctional electrocatalyst towards highly-efficient overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (45) ◽  
pp. 23125-23133
Author(s):  
Yifan Tian ◽  
Xinying Xue ◽  
Yu Gu ◽  
Zhaoxi Yang ◽  
Guo Hong ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Splitting ◽  
Significant Role ◽  
High Efficiency ◽  
Low Cost ◽  
Hydrogen Energy ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Splitting Water

Electrochemically splitting water into hydrogen and oxygen plays a significant role in the commercialization of hydrogen energy as well as fuel cells, but it remains a challenge to design and fabricate low-cost and high-efficiency electrocatalysts.

scholarly journals Recent Advances in Nanoscale Based Electrocatalysts for Metal-Air Battery, Fuel Cell and Water-Splitting Applications: An Overview

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 458
Author(s):  
Tse-Wei Chen ◽  
Ganesan Anushya ◽  
Shen-Ming Chen ◽  
Palraj Kalimuthu ◽  
Vinitha Mariyappan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Energy Storage ◽  
Water Splitting ◽  
Clean Energy ◽  
Life Cycles ◽  
Great Promise ◽  
Storage Technology ◽  
Highly Efficient ◽  
Energy Storage Technology ◽  
Air Battery

Metal-air batteries and fuel cells are considered the most promising highly efficient energy storage systems because they possess long life cycles, high carbon monoxide (CO) tolerance, and low fuel crossover ability. The use of energy storage technology in the transport segment holds great promise for producing green and clean energy with lesser greenhouse gas (GHG) emissions. In recent years, nanoscale based electrocatalysts have shown remarkable electrocatalytic performance towards the construction of sustainable energy-related devices/applications, including fuel cells, metal-air battery and water-splitting processes. This review summarises the recent advancement in the development of nanoscale-based electrocatalysts and their energy-related electrocatalytic applications. Further, we focus on different synthetic approaches employed to fabricate the nanomaterial catalysts and also their size, shape and morphological related electrocatalytic performances. Following this, we discuss the catalytic reaction mechanism of the electrochemical energy generation process, which provides close insight to develop a more efficient catalyst. Moreover, we outline the future perspectives and challenges pertaining to the development of highly efficient nanoscale-based electrocatalysts for green energy storage technology.

Interfacial engineering of Mo2C–Mo3C2 heteronanowires for high performance hydrogen evolution reactions

Nanoscale ◽  
2019 ◽  
Vol 11 (48) ◽  
pp. 23318-23329 ◽  
Author(s):  
Lina Jia ◽  
Chen Li ◽  
Yaru Zhao ◽  
Bitao Liu ◽  
Shixiu Cao ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Precious Metal ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Critical Importance ◽  
Interfacial Engineering ◽  
Hydrogen Evolution Reactions

Non-precious metal-based electrocatalysts with high activity and stability for efficient hydrogen evolution reactions are of critical importance for low-cost and large-scale water splitting.

Ultra-thin NiFeSe nanosheets as a highly efficient bifunctional electrocatalyst for overall water splitting

2020 ◽  
Vol 4 (2) ◽  
pp. 582-588 ◽  
Author(s):  
Yu-Yang Sun ◽  
Mei-Yan Jiang ◽  
Lian-Kui Wu ◽  
Guang-Ya Hou ◽  
Yi-Ping Tang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Low Cost ◽  
Good Stability ◽  
Excellent Performance ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Overall Water Splitting

Developing a bifunctional electrocatalyst with a facile method, low cost, excellent performance and good stability for overall water splitting is essential for the wide application of hydrogen production.

scholarly journals Study of Activity and Super-Capacitance Exhibited by Bifunctional Raney 2.0 Catalyst for Alkaline Water-Splitting Electrolysis

Hydrogen ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 1-17
Author(s):  
William J. F. Gannon ◽  
Charles W. Dunnill
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Electrochemical Techniques ◽  
Bifunctional Electrocatalyst ◽  
Energy Capture ◽  
A New Technique ◽  
Alkaline Electrolysis

Low-cost, high-performance coatings for hydrogen production via electrolytic water-splitting are of great importance for de-carbonising energy. In this study the Raney2.0 coating was analysed using various electrochemical techniques to assess its absolute performance, and it was confirmed to have an extremely low overpotential for hydrogen evolution of just 28 mV at 10 mA/cm2. It was also confirmed to be an acceptable catalyst for oxygen evolution, making it the highest performing simple bifunctional electrocatalyst known. The coating exhibits an extremely high capacitance of up to 1.7 F/cm2, as well as being able to store 0.61 J/cm2 in the form of temporary hydride deposits. A new technique is presented that performs a best-fit of a transient simulation of an equivalent circuit containing a constant phase element to cyclic voltammetry measurements. From this the roughness factor of the coating was calculated to be approximately 40,000, which is the highest figure ever reported for this type of material. The coating is therefore an extremely useful improved bifunctional coating for the continued roll-out of alkaline electrolysis for large-scale renewable energy capture via hydrogen production.

Cobalt nanoparticles encapsulated in N-doped graphene nanoshells as an efficient cathode electrocatalyst for a mechanical rechargeable zinc–air battery

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90069-90075 ◽  
Author(s):  
Kai-Yuan Zhou ◽  
Guang-Yi Chen ◽  
Jia-Ang Liu ◽  
Zhi-Peng Zhang ◽  
Peng Sun ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Low Cost ◽  
Cobalt Nanoparticles ◽  
Practical Applications ◽  
Doped Graphene ◽  
Air Battery

Air-cathodes with properties of efficiency, durability and low cost are essential for high performance metal–air batteries and fuel cells for practical applications.

An electron injection promoted highly efficient electrocatalyst of FeNi3@GR@Fe-NiOOH for oxygen evolution and rechargeable metal–air batteries

2016 ◽  
Vol 4 (20) ◽  
pp. 7762-7771 ◽  
Author(s):  
Xin Wang ◽  
Xiangye Liu ◽  
Chuan-Jia Tong ◽  
Xiaotao Yuan ◽  
Wujie Dong ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Fuel Cells ◽  
High Activity ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Electron Injection ◽  
Oxygen Electrode ◽  
Energy Technology ◽  
Renewable Energy Technology ◽  
Highly Efficient

Efficient catalysts for oxygen evolution reactions (OERs) are a key renewable energy technology for fuel cells, metal–air batteries and water splitting, but few non-precious oxygen electrode catalysts with high activity have been discovered.

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