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...

scholarly journals Flexible hybrid process for combined production of heat, power and renewable feedstock for refineries

2020 ◽  
Author(s):  
Esa Kurkela ◽  
Minna Kurkela ◽  
Christian Frilund ◽  
Ilkka Hiltunen ◽  
Benjamin Rollins ◽  
...  
Keyword(s):  
Precious Metal ◽  
Low Cost ◽  
Winter Season ◽  
District Heating ◽  
Nickel Catalysts ◽  
Intermediate Energy ◽  
Metal Catalysts ◽  
Heat Power ◽  
Hydrocarbon Gases ◽  
Precious Metal Catalysts

A flexible combined heat, power and fuel production concept, FlexCHX, is being developed for managing the seasonal mismatch between solar energy supply and the demand for heat and power characteristic of Northern and Central Europe. The process produces an intermediate energy carrier (Fischer-Tropsch hydrocarbon product), which can be refined to transportation fuels using existing refineries. The FlexCHX process can be integrated into various combined heat and power production systems, both industrial CHPs and communal district heating units. In the summer season, renewable fuels are produced from biomass and hydrogen; the hydrogen is produced from water via electrolysis that is driven by low-cost excess electricity from the grid. In the dark winter season, the plant is operated only with biomass in order to maximize the production of the much-needed heat, electricity and FT hydrocarbons. Most of the invested plant components are in full use throughout the year with only the electrolysis unit being operated seasonally. The catalytic reformer plays a key role in this process by converting tars and light hydrocarbon gases into synthesis gas and by bringing the main gas constituents towards equilibrium. Developmental precious metal catalysts were used, and an optimal reformer concept was established and tested at pilot scale. Reforming results obtained at pilot gasification tests with commercial nickel catalysts and with the developed precious metal catalysts are presented.

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.

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.

Effect of transition metal (M: Fe, Co or Mn) for the oxygen reduction reaction with non-precious metal catalysts in acid medium

2014 ◽  
Vol 39 (10) ◽  
pp. 5309-5318 ◽  
Author(s):  
C. Domínguez ◽  
F.J. Pérez-Alonso ◽  
M. Abdel Salam ◽  
J.L. Gómez de la Fuente ◽  
S.A. Al-Thabaiti ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Acid Medium ◽  
Precious Metal ◽  
Reduction Reaction ◽  
Metal Catalysts ◽  
Precious Metal Catalysts

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...

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.

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