Inserting Co and P into MoS2 photocathodes: enhancing hydrogen evolution reaction catalytic performance by activating edges and basal planes with sulfur vacancies

2020 ◽  
Vol 10 (20) ◽  
pp. 6902-6909
Author(s):  
Karthika Pichaimuthu ◽  
Anirudha Jena ◽  
Ho Chang ◽  
Chaochin Su ◽  
Ru-Shi Liu
Keyword(s):  
Solar Energy ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Catalytic Performance ◽  
Effective Technique ◽  
Energy Needs ◽  
Production Of Hydrogen

The production of hydrogen using solar energy via a photoelectrochemical system is an effective technique for meeting present clean energy needs.

scholarly journals Nickel Phosphide Electrocatalysts for Hydrogen Evolution Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 188 ◽  
Author(s):  
Cun Hu ◽  
Chao Lv ◽  
Shuai Liu ◽  
Yan Shi ◽  
Jiangfeng Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Preparation Method ◽  
Clean Energy ◽  
High Energy ◽  
Nickel Phosphide ◽  
Hydrogen Energy ◽  
Practical Applications ◽  
Nickel Phosphides ◽  
Production Of Hydrogen

The production of hydrogen through electrochemical water splitting driven by clean energy becomes a sustainable route for utilization of hydrogen energy, while an efficient hydrogen evolution reaction (HER) electrocatalyst is required to achieve a high energy conversion efficiency. Nickel phosphides have been widely explored for electrocatalytic HER due to their unique electronic properties, efficient electrocatalytic performance, and a superior anti-corrosion feature. However, the HER activities of nickel phosphide electrocatalysts are still low for practical applications in electrolyzers, and further studies are necessary. Therefore, at the current stage, a specific comprehensive review is necessary to focus on the progresses of the nickel phosphide electrocatalysts. This review focuses on the developments of preparation approaches of nickel phosphides for HER, including a mechanism of HER, properties of nickel phosphides, and preparation and electrocatalytic HER performances of nickel phosphides. The progresses of the preparation and HER activities of the nickel phosphide electrocatalysts are mainly discussed by classification of the preparation method. The comparative surveys of their HER activities are made in terms of experimental metrics of overpotential at a certain current density and Tafel slope together with the preparation method. The remaining challenges and perspectives of the future development of nickel phosphide electrocatalysts for HER are also proposed.

Surface-engineered mesoporous Pt nanodendrites with Ni dopant for highly enhanced catalytic performance in hydrogen evolution reaction

2019 ◽  
Vol 7 (20) ◽  
pp. 12800-12807 ◽  
Author(s):  
Lu Li ◽  
Shan Wang ◽  
Laifei Xiong ◽  
Bin Wang ◽  
Guang Yang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Environmental Problems ◽  
Catalytic Performance ◽  
Comprehensive Utilization ◽  
Effective Strategies ◽  
Ni Dopant

Hydrogen production by electrolyzing water is expected to be one of the most effective strategies to realize the comprehensive utilization of clean energy and thus alleviate the growing environmental problems.

scholarly journals 2D-Layered Non-Precious Electrocatalysts for Hydrogen Evolution Reaction: Fundamentals to Applications

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 689
Author(s):  
Prasanta Kumar Sahoo ◽  
Soubhagya Ranjan Bisoi ◽  
Yi-June Huang ◽  
Dung-Sheng Tsai ◽  
Chuan-Pei Lee
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Cost Effective ◽  
Clean Energy ◽  
Layered Materials ◽  
Scale Production ◽  
Highly Efficient ◽  
2D Layered Materials ◽  
Production Of Hydrogen

The production of hydrogen via the water splitting process is one of the most promising technologies for future clean energy requirements, and one of the best related challenges is the choice of the most highly efficient and cost effective electrocatalyst. Conventional electrocatalysts based on precious metals are rare and very-expensive for large-scale production of hydrogen, demanding the exploration for low-cost earth abundant alternatives. In this context, extensive works from both theoretical and experimental investigations have shown that two-dimensional (2D) layered materials have gained considerable attention as highly effective electrocatalytic materials for electrical-driven hydrogen production because of their unique layered structure and exciting electrical properties. This review highlights recent advancements on 2D layered materials, including graphene, transitional metal dichalcogenides (TMDs), layered double hydroxides (LDHs), MXene, and graphitic carbon nitride (g-C3N4) as cost-effective and highly efficient electrocatalysts for hydrogen production. In addition, some fundamental aspects of the hydrogen evolution reaction (HER) process and a wide ranging overview on several strategies to design and synthesize 2D layered material as HER electrocatalysts for commercial applications are introduced. Finally, the conclusion and futuristic prospects and challenges of the advancement of 2D layered materials as non-precious HER electrocatalysts are briefly discussed.

scholarly journals Elucidating the formation and structural evolution of platinum single-site catalysts for hydrogen evolution reaction

2021 ◽  
Author(s):  
Peng Tang ◽  
Hyeon Jeong Lee ◽  
Kevin Hurlbutt ◽  
Po-Yuan Huang ◽  
Sudarshan Narayanan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Single Site ◽  
Ex Situ ◽  
Edge Structure ◽  
X Ray ◽  
Production Of Hydrogen ◽  
Single Site Catalysts ◽  
X Ray Absorption

Platinum single-site catalysts (SSCs) are a promising technology for the production of hydrogen from clean energy sources. They have high activity and maximal platinum-atom utilisation. However, the bonding environment of platinum during operation is poorly understood. In this work, we use operando, synchrotron-X-ray absorption spectroscopy to study the platinum bonding in SSCs. First, we synthesise an atomically dispersed platinum complex with aniline and chloride ligands onto graphene and characterise it with ex-situ electron microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy, X-ray absorption near edge structure spectroscopy (XANES), and extended X-ray absorption fine structure spectroscopy (EXAFS). Then, by operando EXAFS and XANES, we show that as a negatively biased potential is applied, the Pt-N bonds break first followed by the Pt-Cl bonds. The platinum is reduced from platinum(II) to metallic platinum(0) by the onset of the hydrogen-evolution reaction at 0 V. Furthermore, we observe an increase in Pt-Pt bonding, indicating the formation of platinum agglomerates. Together, these results indicate that while aniline is used to prepare platinum SSCs, the single-site complexes are decomposed and platinum agglomerates at operating potentials. This work is an important contribution to the understanding of the bonding environment and the evolution of the molecular structure of platinum complexes in SSCs.

In situ modulation of silica-supported MoO2/Mo2C heterojunction for enhanced hydrogen evolution reaction

2020 ◽  
Vol 10 (14) ◽  
pp. 4776-4785
Author(s):  
Rajinder Kumar ◽  
Zubair Ahmed ◽  
Ravi Kumar ◽  
Shambhu Nath Jha ◽  
Dibyendu Bhattacharyya ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Production Of Hydrogen ◽  
Carbon Neutral ◽  
Conversion Technologies ◽  
Promising Source

Hydrogen being a promising source of clean energy, the production of hydrogen using electrocatalysis and the development of carbon-neutral energy conversion technologies are crucial.

scholarly journals A monodispersed CuPt alloy: synthesis and its superior catalytic performance in the hydrogen evolution reaction over a full pH range

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12470-12475
Author(s):  
Xinmei Liu ◽  
Chen Liang ◽  
Wenlong Yang ◽  
Chunyang Yang ◽  
Jiaqi Lin ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Stability ◽  
Low Cost ◽  
Catalytic Performance ◽  
Ph Range

An effective approach to achieve the low cost and high stability of electro-catalysts for HER.

scholarly journals A Mini Review on Doped Nickel-Based Electrocatalysts for Hydrogen Evolution Reaction

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4651
Author(s):  
Yilin Deng ◽  
Wei Lai ◽  
Bin Xu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Water Electrolysis ◽  
Energy Resources ◽  
Alkaline Media ◽  
Hydrogen Energy ◽  
Heteroatom Doping ◽  
Highly Active ◽  
Production Of Hydrogen

The energy crisis and environmental pollution have attracted much attention and have promoted researches on clean and sustainable hydrogen energy resources. With the help of highly active and stable transition metal nickel-based catalysts, the production of hydrogen from water electrolysis from electrolyzed water has become an inexpensive and efficient strategy for generating hydrogen energy. In recent years, heteroatom doping has been found to be an effective strategy to improve the electrocatalytic hydrogen evolution reaction (HER) performances of nickel-based catalysts in acidic, neutral, and alkaline media. This review will highlight many recent works of inexpensive and readily available heteroatom-doped nickel-based HER catalysts. The evaluation methods for the performances of HER catalyst will be briefly described, and the role of heteroatom doping and its application in nickel-based catalyst will be summarized. This article will also point out some heteroatom doping strategies, which may provide references and inspire the design of other catalysts with dopants.

scholarly journals Catalytic synergy effect of MoS2/reduced graphene oxide hybrids for a highly efficient hydrogen evolution reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (9) ◽  
pp. 5480-5487 ◽  
Author(s):  
Jung Eun Lee ◽  
Jaemin Jung ◽  
Taeg Yeoung Ko ◽  
Sujin Kim ◽  
Seong-Il Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electronic Transition ◽  
Catalytic Performance ◽  
Synergy Effect ◽  
Tafel Slope ◽  
Reduced Graphene ◽  
Catalytically Active

GO content tuning gradually enhanced the HER catalytic performance of the MoS2/rGO hybrids, decreasing the Tafel slope from 82 to 48 mV per decade owing to an increase of catalytically active areas and an electronic transition of MoS2.

scholarly journals Revealing the Activity of Co3Mo3N and Co3Mo3N0.5 as Electrocatalysts for the Hydrogen Evolution Reaction

2022 ◽  
Author(s):  
Youyi Sun ◽  
Lewen Wang ◽  
Olga Guselnikova ◽  
Oleg Semyonov ◽  
James P Fraser ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Catalytic Performance ◽  
Multiple Factors ◽  
Multicomponent Materials

The hydrogen evolution reaction (HER) from water is governed by electrocatalysts used. Multiple factors such as crystal structure, composition and morphology dictate the final catalytic performance. However, as multicomponent materials...

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