Current Progressions in Transition Metal based Hydroxides as Bi-functional Catalysts towards Electrocatalytic Total Water Splitting

2021 ◽  
Author(s):  
K. Sangeetha ◽  
Karthick Kannimuthu ◽  
S. Sam Sankar ◽  
Arun Karmakar ◽  
Ragunath Madhu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Fossil Fuels ◽  
Sustainable Energy ◽  
Water Electrolysis ◽  
Total Water ◽  
Energy Demands

To meet the ever-increasing energy demands with only source of fossil fuels will no longer be sufficient for sustainable energy developments. Thus, the choice of water electrolysis is the finest...

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.

Enhancement of HER kinetics with RhNiFe for high-rate water electrolysis

2020 ◽  
Vol 10 (11) ◽  
pp. 3681-3693 ◽  
Author(s):  
Kannimuthu Karthick ◽  
Abdul Bashith Mansoor Basha ◽  
Abinaya Sivakumaran ◽  
Subrata Kundu
Keyword(s):  
Water Splitting ◽  
Water Electrolysis ◽  
High Rate ◽  
Total Water ◽  
Low Overpotential

The NiFeCHH is best for OER and poor for HER which by introducing Rh, showed total water splitting in KOH. It requires an ultra-low overpotential of just 36 mV at 50 mA cm−2 for HERs and 286 mV at 50 mA cm−2 for TWS.

Recent Trends and Developments in Transition Metal Dichalcogenide Photoelectrodes for Solar-to-Hydrogen Conversion

2018 ◽  
Vol 15 (4) ◽  
Author(s):  
S. V. Prabhakar Vattikuti
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Large Scale ◽  
Carrier Transport ◽  
Fossil Fuels ◽  
Chemical Species ◽  
Research Area ◽  
Absorption Capacity ◽  
Transition Metal Dichalcogenide ◽  
Pec Water Splitting

The design of efficient devices for the photoelectrochemical (PEC) water splitting for solar-to-hydrogen (STH) processes has gained much attention because of the fossil fuels crisis. In PEC water splitting, solar energy is converted to a chemical fuel for storage. From the viewpoint of economics and large-scale application, semiconductor photoelectrodes with high stability and efficiency are required. However, although numerous materials have been discovered, challenges remain for their commercialization. Among the enormous number of investigated materials, layered transition metal dichalcogenide (TMD)-based photoelectrodes show attractive performance in PEC devices owing to their suitable narrow bandgaps, high absorption capacity, and fast carrier transport properties. A comprehensive review of TMDs photoelectrodes for STH processes would help advance research in this expanding research area. This review covers the physicochemical features and latest progress in various layered-structure TMD-based photoelectrodes, especially MoS2, as well as various approaches to improve the PEC performance and stability by coupling with active carbon materials, including graphene, CNTs, and conductive carbon. Finally, we discuss the prospects and potential applications for STH processes. This review paper gives insights into the fundamental concepts and the role of active chemical species during the STH conversion processes and their influence in enhancing PEC water splitting performance.

Engineering transition metal phosphide nanomaterials as highly active electrocatalysts for water splitting

2017 ◽  
Vol 46 (48) ◽  
pp. 16770-16773 ◽  
Author(s):  
Yanmei Shi ◽  
Bin Zhang
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Water Electrolysis ◽  
Metal Phosphide ◽  
Highly Active ◽  
Recent Advances ◽  
Composition And Structure ◽  
Transition Metal Phosphide

This Frontier article will highlight recent advances in engineering the composition and structure of TMPs for higher water electrolysis performances.

Recent advances in transition-metal-sulfide-based bifunctional electrocatalysts for overall water splitting

2021 ◽  
Author(s):  
Min Wang ◽  
Li Zhang ◽  
Yijia He ◽  
Hongwei Zhu
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Metal Sulfide ◽  
Water Electrolysis ◽  
Practical Application ◽  
Transition Metal Sulfide ◽  
Overall Water Splitting ◽  
Recent Advances ◽  
Bifunctional Electrocatalysts

This review summarizes recent advances relating to transition metal sulfide (TMS)-based bifunctional electrocatalysts, providing guidelines for the design and fabrication of TMS-based catalysts for practical application in water electrolysis.

scholarly journals Shining Light on Anion-Mixed Nanocatalysts for Efficient Water Electrolysis: Fundamentals, Progress, and Perspectives

2022 ◽  
Vol 14 (1) ◽  
Author(s):  
Yaoda Liu ◽  
Paranthaman Vijayakumar ◽  
Qianyi Liu ◽  
Thangavel Sakthivel ◽  
Fuyi Chen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Water Electrolysis ◽  
High Energy ◽  
Transition Metal Compounds ◽  
Water Dissociation ◽  
Future Perspectives ◽  
Metal Compounds ◽  
Mixed Water ◽  
Mixed Transition

Highlights This review introduces recent advances of various anion-mixed transition metal compounds (e.g., nitrides, halides, phosphides, chalcogenides, (oxy)hydroxides, and borides) for efficient water electrolysis applications in detail. The challenges and future perspectives are proposed and analyzed for the anion-mixed water dissociation catalysts, including polyanion-mixed and metal-free catalyst, progressive synthesis strategies, advanced in situ characterizations, and atomic level structure–activity relationship. Abstract Hydrogen with high energy density and zero carbon emission is widely acknowledged as the most promising candidate toward world's carbon neutrality and future sustainable eco-society. Water-splitting is a constructive technology for unpolluted and high-purity H2 production, and a series of non-precious electrocatalysts have been developed over the past decade. To further improve the catalytic activities, metal doping is always adopted to modulate the 3d-electronic configuration and electron-donating/accepting (e-DA) properties, while for anion doping, the electronegativity variations among different non-metal elements would also bring some potential in the modulations of e-DA and metal valence for tuning the performances. In this review, we summarize the recent developments of the many different anion-mixed transition metal compounds (e.g., nitrides, halides, phosphides, chalcogenides, oxyhydroxides, and borides/borates) for efficient water electrolysis applications. First, we have introduced the general information of water-splitting and the description of anion-mixed electrocatalysts and highlighted their complementary functions of mixed anions. Furthermore, some latest advances of anion-mixed compounds are also categorized for hydrogen and oxygen evolution electrocatalysis. The rationales behind their enhanced electrochemical performances are discussed. Last but not least, the challenges and future perspectives are briefly proposed for the anion-mixed water dissociation catalysts.

Microwave-assisted synthesis of graphene-like cobalt sulfide freestanding sheets as an efficient bifunctional electrocatalyst for overall water splitting

2018 ◽  
Vol 6 (17) ◽  
pp. 7592-7607 ◽  
Author(s):  
Rafai Souleymen ◽  
Zhitao Wang ◽  
Chen Qiao ◽  
Muhammad Naveed ◽  
Chuanbao Cao
Keyword(s):  
Energy Conversion ◽  
Water Splitting ◽  
Sustainable Energy ◽  
Cobalt Sulfide ◽  
Microwave Assisted Synthesis ◽  
Total Water ◽  
Bifunctional Electrocatalyst ◽  
Microwave Assisted ◽  
Energy Conversion And Storage ◽  
And Storage

Total water splitting provides an appealing pathway for clean and sustainable energy conversion and storage.

scholarly journals Nanostructures of 2d Transition Metal Dichalcogenides for Hydrogen Generation under Alkaline Conditions: From Theoretical Models to Practical Electrocatalysts

2021 ◽  
pp. 25-36
Author(s):  
Zhexu Xi
Keyword(s):  
Transition Metal ◽  
Fossil Fuels ◽  
High Efficiency ◽  
Hydrogen Generation ◽  
Transition Metal Dichalcogenides ◽  
Water Electrolysis ◽  
Theoretical Models ◽  
Slow Kinetics ◽  
Alkaline Conditions ◽  
Metal Dichalcogenides

Hydrogen has been considered as the cleanest renewable energy and the ideal alternative to fossil fuels. Electrocatalytic Hydrogen Evolution Reaction (HER) via water splitting also plays an indispensable role in high-efficiency energy con- version. Compared with the well-investigated acidic HER, the relatively slow kinetics and unclear mechanism of HER in alkaline environments largely make the design of electrocatalysts a trial-and-error process, retarding the scalable development of efficient, sustainable hydrogen production. Furthermore, two-dimensional transition metal dichalcogenides (2D TMDs) have been demonstrated to be promising acidic/ alkaline HER catalysts in water electrolysis due to their outstanding atom-level thickness and surface-based properties.

Solar-assisted co-electrolysis of glycerol and water for concurrent production of formic acid and hydrogen

2021 ◽  
Author(s):  
Zunjian Ke ◽  
Nicholas Williams ◽  
Xingxu Yan ◽  
Sabrina Younan ◽  
Dong He ◽  
...  
Keyword(s):  
Formic Acid ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Fossil Fuels ◽  
Water Electrolysis ◽  
Renewable Electricity ◽  
Promising Alternative ◽  
Cathodic Hydrogen Evolution

Renewable electricity-driven water splitting provides a pathway to manufacturing hydrogen as a promising alternative to fossil fuels. A typical water electrolysis device is comprised of a cathodic hydrogen evolution reaction...

Editor in Chief’s Note on the Green Hydrogen Fuel from Solar / Wind Power

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Seyed Ehsan Hosseini
Keyword(s):  
Solar Wind ◽  
Crude Oil ◽  
Fossil Fuels ◽  
Sustainable Energy ◽  
Green Energy ◽  
Hydrogen Fuel ◽  
Fuel Production ◽  
Crude Oil Prices ◽  
Trade War ◽  
The Cost

Renewable and sustainable energy has an evolving story as the ongoing trade war in the word is influencing crude oil prices. Moreover, the global warming is an inevitable consequence of the worldwide increasing rate of fossil fuel utilization which has persuaded the governments to invest on the clean and sustainable energy resources. In recent years, the cost of green energy has tumbled, making the price of renewables competitive to the fossil fuels. Although, the hydrogen fuel is still extremely expensive compared to the crude oil price, investigations about clean hydrogen fuel production and utilization has been developed significantly which demonstrate the importance of the hydrogen fuel in the future. This article aims to scrutinize the importance of green hydrogen fuel production from solar/wind energy.

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