Selenium Tethered Copper Phthalocyanine Hierarchical Aggregates as Electrochemical Hydrogen Evolution Catalysts

2021 ◽  
Author(s):  
Sakthinathan Indherjith ◽  
Manivannan Mahendran ◽  
Karthik Krishnan ◽  
Selvakumar Karuthapandi
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Precious Metal ◽  
Copper Phthalocyanine ◽  
Metal Catalysts ◽  
Performance Characteristics ◽  
Precious Metal Catalysts ◽  
Acid Environment ◽  
Excellent Stability

The development of non-precious metal catalysts for hydrogen evolution reaction (HER) with excellent stability and adequate performance characteristics in an acid environment is of fundamental importance for inexpensive hydrogen production...

Self-Supported NiCo2O4/CuxO Nanoforest with Electronically Modulated Interfaces as Efficient Electrocatalyst for Overall Water Splitting

2021 ◽  
Author(s):  
Qi Ouyang ◽  
Zuotao Lei ◽  
Qun Li ◽  
Mingyang Li ◽  
Chun-hui Yang
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Alkaline Medium ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Precious Metal ◽  
Metal Catalysts ◽  
Overall Water Splitting ◽  
Precious Metal Catalysts

Developing non-precious metal catalysts capable of both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline medium is of great significance to facilitate the electrocatalytic water-splitting industry. Herein,...

Highly active and durable non-precious-metal catalysts encapsulated in carbon nanotubes for hydrogen evolution reaction

2014 ◽  
Vol 7 (6) ◽  
pp. 1919-1923 ◽  
Author(s):  
Jiao Deng ◽  
Pengju Ren ◽  
Dehui Deng ◽  
Liang Yu ◽  
Fan Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Acidic Medium ◽  
Precious Metal ◽  
Metal Catalysts ◽  
Highly Active ◽  
Precious Metal Catalysts

Novel non-precious-metal catalysts encapsulated in N-doped carbon nanotubes exhibit high activity and remarkable stability towards hydrogen evolution reaction (HER) in acidic medium.

A Low-cost 2D WO3/Ni3S2 heterojunctions for highly stable hydrogen evolution

2021 ◽  
Author(s):  
Minmin Wang ◽  
Tongming Sun ◽  
Weiting Zhong ◽  
Mengke Zhang ◽  
Jin Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Tungsten Trioxide ◽  
Precious Metal ◽  
Low Cost ◽  
Metal Catalysts ◽  
Precious Metal Catalysts ◽  
Hydrogen Evolution Reactions

Transition metal-based nanohybrid has recently been demonstrated an electrocatalyst which show great potential to replace commercial precious metal catalysts in hydrogen evolution reactions. Herein, tungsten trioxide/nickel disulfide (WO3/Ni3S2) heterojunction is...

Non-Equilibrium Hydrogen Production from Ethanol Using CO2 Absorption Ceramic and Precious Metal Catalysts

2007 ◽  
Vol 40 (2) ◽  
pp. 178-185 ◽  
Author(s):  
Yasukazu Iwasaki ◽  
Yuhei Suzuki ◽  
Teiji Kitajima ◽  
Makoto Sakurai ◽  
Hideo Kameyama
Keyword(s):  
Hydrogen Production ◽  
Precious Metal ◽  
Metal Catalysts ◽  
Co2 Absorption ◽  
Precious Metal Catalysts ◽  
Non Equilibrium

scholarly journals Hydrogen production from bio-fuels using precious metal catalysts

2017 ◽  
Vol 23 ◽  
pp. 03002
Author(s):  
Joachim Pasel ◽  
Sebastian Wohlrab ◽  
Mikhail Rotov ◽  
Katrin Löhken ◽  
Ralf Peters ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Precious Metal ◽  
Metal Catalysts ◽  
Precious Metal Catalysts

scholarly journals Design principles for platinum nanoparticles catalysing electrochemical hydrogen evolution and oxidation reactions: edges are much more active than facets

2017 ◽  
Vol 5 (44) ◽  
pp. 23328-23338 ◽  
Author(s):  
C. M. Zalitis ◽  
A. R. Kucernak ◽  
J. Sharman ◽  
E. Wright
Keyword(s):  
Fuel Cells ◽  
Hydrogen Evolution ◽  
Platinum Nanoparticles ◽  
Precious Metal ◽  
Design Principles ◽  
Metal Catalysts ◽  
Oxidation Reactions ◽  
Precious Metal Catalysts ◽  
The Cost

Improving the performance of hydrogen evolution and oxidation reactions using precious metal catalysts is key in reducing the cost of electrolysers and fuel cells.

Exhaust gas fuel reforming for hydrogen production with CGO-based precious metal catalysts

2017 ◽  
Vol 163 ◽  
pp. 206-214 ◽  
Author(s):  
Seunghyeon Choi ◽  
Joongmyeon Bae ◽  
Juhun Lee ◽  
Jeonghwa Cha
Keyword(s):  
Hydrogen Production ◽  
Precious Metal ◽  
Metal Catalysts ◽  
Exhaust Gas ◽  
Fuel Reforming ◽  
Precious Metal Catalysts ◽  
Gas Fuel

2,2’-Dipyridylamine as Organic Molecular Electrocatalyst for Hydrogen Evolution Reaction in Acidic Electrolytes

2019 ◽  
Author(s):  
Xi Yin ◽  
Ling Lin ◽  
Hoon T. Chung ◽  
Ulises Martinez ◽  
Andrew M. Baker ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Low Cost ◽  
Membrane Electrode Assembly ◽  
Carbon Surface ◽  
Membrane Electrode ◽  
Durability Test ◽  
Onset Potential ◽  
Precious Metal Catalysts

Finding a low-cost and stable electrocatalyst for hydrogen evolution reaction (HER) as a replacement for scarce and expensive precious metal catalysts has attracted significant interest from chemical and materials research communities. Here, we demonstrate an organic catalyst based on 2,2’-dipyridylamine (dpa) molecules adsorbed on carbon surface, which shows remarkable hydrogen evolution activity and performance durability in strongly acidic polymer electrolytes without involving any metal. The HER onset potential at dpa adsorbed on carbon has been found to be less than 50 mV in sulfuric acid and in a Nafion-based membrane electrode assembly (MEA). At the same time, this catalyst has shown no performance loss in a 60-hour durability test. The HER reaction mechanisms and the low onset overpotential in this system are revealed based on electrochemical study. Density functional theory (DFT) calculations suggest that the pyridyl-N functions as the active site for H adsorption with a free energy of -0.13 eV, in agreement with the unusually low onset overpotential for an organic molecular catalyst.<br>

2,2’-Dipyridylamine as Organic Molecular Electrocatalyst for Hydrogen Evolution Reaction in Acidic Electrolytes

2019 ◽  
Author(s):  
Xi Yin ◽  
Ling Lin ◽  
Hoon T. Chung ◽  
Ulises Martinez ◽  
Andrew M. Baker ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Low Cost ◽  
Membrane Electrode Assembly ◽  
Carbon Surface ◽  
Membrane Electrode ◽  
Durability Test ◽  
Onset Potential ◽  
Precious Metal Catalysts

Finding a low-cost and stable electrocatalyst for hydrogen evolution reaction (HER) as a replacement for scarce and expensive precious metal catalysts has attracted significant interest from chemical and materials research communities. Here, we demonstrate an organic catalyst based on 2,2’-dipyridylamine (dpa) molecules adsorbed on carbon surface, which shows remarkable hydrogen evolution activity and performance durability in strongly acidic polymer electrolytes without involving any metal. The HER onset potential at dpa adsorbed on carbon has been found to be less than 50 mV in sulfuric acid and in a Nafion-based membrane electrode assembly (MEA). At the same time, this catalyst has shown no performance loss in a 60-hour durability test. The HER reaction mechanisms and the low onset overpotential in this system are revealed based on electrochemical study. Density functional theory (DFT) calculations suggest that the pyridyl-N functions as the active site for H adsorption with a free energy of -0.13 eV, in agreement with the unusually low onset overpotential for an organic molecular catalyst.<br>

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