scholarly journals Earth-Abundant Electrocatalysts for Water Splitting: Current and Future Directions

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 429
Author(s):  
Sami M. Ibn Shamsah
Keyword(s):  
Air Pollution ◽  
Water Splitting ◽  
Low Cost ◽  
Energy Resource ◽  
Water Electrolysis ◽  
The Sun ◽  
Renewable Energy Resource ◽  
Future Directions ◽  
Future Developments ◽  
Earth Abundant

Of all the available resources given to mankind, the sunlight is perhaps the most abundant renewable energy resource, providing more than enough energy on earth to satisfy all the needs of humanity for several hundred years. Therefore, it is transient and sporadic that poses issues with how the energy can be harvested and processed when the sun does not shine. Scientists assume that electro/photoelectrochemical devices used for water splitting into hydrogen and oxygen may have one solution to solve this hindrance. Water electrolysis-generated hydrogen is an optimal energy carrier to store these forms of energy on scalable levels because the energy density is high, and no air pollution or toxic gas is released into the environment after combustion. However, in order to adopt these devices for readily use, they have to be low-cost for manufacturing and operation. It is thus crucial to develop electrocatalysts for water splitting based on low-cost and land-rich elements. In this review, I will summarize current advances in the synthesis of low-cost earth-abundant electrocatalysts for overall water splitting, with a particular focus on how to be linked with photoelectrocatalytic water splitting devices. The major obstacles that persist in designing these devices. The potential future developments in the production of efficient electrocatalysts for water electrolysis are also described.

scholarly journals Hydrogen production from water electrolysis: role of catalysts

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shan Wang ◽  
Aolin Lu ◽  
Chuan-Jian Zhong
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Noble Metal ◽  
Active Sites ◽  
Current Knowledge ◽  
Low Cost ◽  
Critical Role ◽  
Water Electrolysis ◽  
Efficient Production ◽  
Production Of Hydrogen

AbstractAs a promising substitute for fossil fuels, hydrogen has emerged as a clean and renewable energy. A key challenge is the efficient production of hydrogen to meet the commercial-scale demand of hydrogen. Water splitting electrolysis is a promising pathway to achieve the efficient hydrogen production in terms of energy conversion and storage in which catalysis or electrocatalysis plays a critical role. The development of active, stable, and low-cost catalysts or electrocatalysts is an essential prerequisite for achieving the desired electrocatalytic hydrogen production from water splitting for practical use, which constitutes the central focus of this review. It will start with an introduction of the water splitting performance evaluation of various electrocatalysts in terms of activity, stability, and efficiency. This will be followed by outlining current knowledge on the two half-cell reactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), in terms of reaction mechanisms in alkaline and acidic media. Recent advances in the design and preparation of nanostructured noble-metal and non-noble metal-based electrocatalysts will be discussed. New strategies and insights in exploring the synergistic structure, morphology, composition, and active sites of the nanostructured electrocatalysts for increasing the electrocatalytic activity and stability in HER and OER will be highlighted. Finally, future challenges and perspectives in the design of active and robust electrocatalysts for HER and OER towards efficient production of hydrogen from water splitting electrolysis will also be outlined.

Atomic Heterointerface Engineering Breaks Activity Limitation of Electrocatalysts and Promises Highly-Efficient Alkaline Water Splitting

2021 ◽  
Author(s):  
Qiucheng Xu ◽  
Jiahao Zhang ◽  
Haoxuan Zhang ◽  
Liyue Zhang ◽  
Ling Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Anion Exchange ◽  
Low Cost ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Alkaline Water Electrolysis ◽  
Green Electricity ◽  
Alkaline Water ◽  
Highly Efficient ◽  
Exchange Membrane

Alkaline water splitting, especially the anion-exchange-membrane based water electrolysis, is an attractive way for low-cost and scalable H2 production. Green electricity-driven alkaline water electrolysis is requested to develop highly-efficient electrocatalysts...

Al-doped nickel sulfide nanosheet arrays as highly efficient bifunctional electrocatalysts for overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (47) ◽  
pp. 24244-24250
Author(s):  
Wenjun He ◽  
Fangqing Wang ◽  
Dongbo Jia ◽  
Ying Li ◽  
Limin Liang ◽  
...  
Keyword(s):  
High Activity ◽  
Water Splitting ◽  
Precious Metal ◽  
Nickel Sulfide ◽  
Low Cost ◽  
Water Electrolysis ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Nanosheet Arrays ◽  
Production Of Hydrogen

The development of low-cost, high-activity, durable non-precious metal bifunctional electrocatalysts is of great importance in the production of hydrogen by water electrolysis.

scholarly journals A General Concept for Solar Water‐Splitting Monolithic Photoelectrochemical Cells Based on Earth‐Abundant Materials and a Low‐Cost Photovoltaic Panel

2020 ◽  
Vol 4 (2) ◽  
pp. 1900102
Author(s):  
Sitthichok Kasemthaveechok ◽  
Kiseok Oh ◽  
Bruno Fabre ◽  
Jean‐François Bergamini ◽  
Cristelle Mériadec ◽  
...  
Keyword(s):  
Water Splitting ◽  
Low Cost ◽  
General Concept ◽  
Photoelectrochemical Cells ◽  
Photovoltaic Panel ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Earth Abundant

scholarly journals A General Concept for Solar Water-Splitting Monolithic Photoelectrochemical Cells Based on Earth-Abundant Materials and a Low-Cost Photovoltaic Panel

2018 ◽  
Vol 2 (11) ◽  
pp. 1800075 ◽  
Author(s):  
Sitthichok Kasemthaveechok ◽  
Kiseok Oh ◽  
Bruno Fabre ◽  
Jean-François Bergamini ◽  
Cristelle Mériadec ◽  
...  
Keyword(s):  
Water Splitting ◽  
Low Cost ◽  
General Concept ◽  
Photoelectrochemical Cells ◽  
Photovoltaic Panel ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Earth Abundant

Reduced overpotentials for electrocatalytic water splitting over Fe- and Ni-modified BaTiO3

2016 ◽  
Vol 18 (42) ◽  
pp. 29561-29570 ◽  
Author(s):  
Nongnuch Artrith ◽  
Wutthigrai Sailuam ◽  
Sukit Limpijumnong ◽  
Alexie M. Kolpak
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Water Splitting ◽  
Water Oxidation ◽  
Water Electrolysis ◽  
Transition Metal Doping ◽  
Metal Doping ◽  
Earth Abundant ◽  
Promising Avenue

Transition-metal doping can significantly improve the catalytic activity of BaTiO3 for water oxidation. Modification of earth-abundant perovskites can be a promising avenue towards inexpensive catalysts for water electrolysis.

scholarly journals Recent Advancements and Future Prospects in Ultrathin 2D Semiconductor-Based Photocatalysts for Water Splitting

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1111
Author(s):  
Xiaoyong Yang ◽  
Deobrat Singh ◽  
Rajeev Ahuja
Keyword(s):  
Optical Properties ◽  
Water Splitting ◽  
Noble Metals ◽  
Degradation Kinetics ◽  
Low Cost ◽  
General Mechanism ◽  
Advantages And Disadvantages ◽  
Earth Abundant ◽  
Kinetics Of ◽  
O2 Production

Ultrathin two-dimensional (2D) semiconductor-mediated photocatalysts have shown their compelling potential and have arguably received tremendous attention in photocatalysis because of their superior thickness-dependent physical, chemical, mechanical and optical properties. Although numerous comprehensions about 2D semiconductor photocatalysts have been amassed up to now, low cost efficiency, degradation, kinetics of charge transfer along with recycling are still the big challenges to realize a wide application of 2D semiconductor-based photocatalysis. At present, most photocatalysts still need rare or expensive noble metals to improve the photocatalytic activity, which inhibits their commercial-scale application extremely. Thus, developing less costly, earth-abundant semiconductor-based photocatalysts with efficient conversion of sunlight energy remains the primary challenge. In this review, it begins with a brief description of the general mechanism of overall photocatalytic water splitting. Then a concise overview of different types of 2D semiconductor-mediated photocatalysts is given to figure out the advantages and disadvantages for mentioned semiconductor-based photocatalysis, including the structural property and stability, synthesize method, electrochemical property and optical properties for H2/O2 production half reaction along with overall water splitting. Finally, we conclude this review with a perspective, marked on some remaining challenges and new directions of 2D semiconductor-mediated photocatalysts.

Controllable Atomic Defect Engineering in Layered NixFe1-x(OH)2 Nanosheets for Electrochemical Overall Water Splitting

2021 ◽  
Author(s):  
Wei Ma ◽  
Jiajia Ge ◽  
Jin You Zheng ◽  
Jiangwei Zhang ◽  
Suyu Jiang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Low Cost ◽  
Defect Engineering ◽  
Overall Water Splitting ◽  
Earth Abundant

Exploring efficient electrocatalysts through controllable defect engineering in materials with low-cost and earth-abundant elements is highly desired for overall water splitting. Herein, a hybrid electrocatalyst was accomplished by growing layered...

scholarly journals Sea coral-like NiCo2O4@(Ni, Co)OOH heterojunctions for enhancing overall water-splitting

2018 ◽  
Vol 8 (16) ◽  
pp. 4151-4158 ◽  
Author(s):  
Leiming Tao ◽  
Man Li ◽  
Shaohang Wu ◽  
Qinglong Wang ◽  
Xin Xiao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
High Current Density ◽  
Low Cost ◽  
Water Electrolysis ◽  
Industrial Water ◽  
High Current ◽  
Overall Water Splitting

Efficient and low-cost sea coral-like NiCo2O4@(Ni, Co)OOH heterojunction catalysts meet the high current density requirements for industrial water electrolysis applications.

scholarly journals Recent Progress and Approaches on Carbon-Free Energy from Water Splitting

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Aslam Hossain ◽  
K. Sakthipandi ◽  
A. K. M. Atique Ullah ◽  
Sanjay Roy
Keyword(s):  
Free Energy ◽  
Water Splitting ◽  
Energy Demand ◽  
Chemical Elements ◽  
Energy Resource ◽  
Renewable Energy Resource ◽  
Additional Increase ◽  
The Earth ◽  
The World ◽  
Modern Economic

AbstractSunlight is the most abundant renewable energy resource, providing the earth with enough power that is capable of taking care of all of humanity’s desires—a hundred times over. However, as it is at times diffuse and intermittent, it raises issues concerning how best to reap this energy and store it for times when the Sun is not shining. With increasing population in the world and modern economic development, there will be an additional increase in energy demand. Devices that use daylight to separate water into individual chemical elements may well be the answer to this issue, as water splitting produces an ideal fuel. If such devices that generate fuel were to become widely adopted, they must be low in cost, both for supplying and operation. Therefore, it is essential to research for cheap technologies for water ripping. This review summarizes the progress made toward such development, the open challenges existing, and the approaches undertaken to generate carbon-free energy through water splitting.

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