Precious metal nanocrystals for renewable energy electrocatalysis: structural design and controlled synthesis

2020 ◽  
Vol 49 (2) ◽  
pp. 267-273 ◽  
Author(s):  
Mingchuan Luo ◽  
Yong Yang ◽  
Shaojun Guo
Keyword(s):  
Renewable Energy ◽  
Structural Design ◽  
Crucial Role ◽  
Precious Metal ◽  
Chemical Energy ◽  
Controlled Synthesis ◽  
Metal Nanocrystals

Electrocatalysis plays a crucial role in the transformation between electrical and chemical energy.

Surface overgrowth on gold nanoparticles modulating high-energy facets for efficient electrochemical CO2 reduction

Nanoscale ◽  
2021 ◽  
Author(s):  
Woong Choi ◽  
Joon Woo Park ◽  
Woonghyeon Park ◽  
Yousung Jung ◽  
Hyunjoon Song
Keyword(s):  
Gold Nanoparticles ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Co2 Reduction ◽  
High Energy ◽  
Reduction Reaction ◽  
Chemical Energy ◽  
Energy Sources ◽  
Electrochemical Co2 Reduction

Electrochemical CO2 reduction reaction (eCO2RR) has been considered one of the potential technologies to store electricity from renewable energy sources into chemical energy. For this aim, designing catalysts with high...

scholarly journals Literature Review of Renewable Energy Policies and Impacts

2019 ◽  
Vol 2 (2) ◽  
pp. 28 ◽  
Author(s):  
Tarek Safwat Kabel ◽  
Mohga Bassim
Keyword(s):  
Economic Growth ◽  
Renewable Energy ◽  
Literature Review ◽  
Crucial Role ◽  
Carbon Emission ◽  
Job Creation ◽  
Tax Incentives ◽  
Renewable Portfolio Standard ◽  
Electricity Prices ◽  
Methodological Approaches

By 2017, 128 countries have adopted renewable energy support policies, compared to just 48 countries in 2005. These policies played a crucial role in helping countries to shift from conventional energy to renewable energy by overcoming the barriers facing the development of renewable energy. This paper reviews the studies, which outlined the policies used by different governments to support the development of renewable energy, which includes: Tax incentives, Loans, Feed-in tariff, and Renewable portfolio standard. The literature review covers different studies that examined the impacts of renewable energy on economic growth, job creation, welfare, CO2 emissions, electricity prices, and fuel imports. Researches have used different methodological approaches, different periods, and different countries to examine the impacts of renewable energy. The studies found that the policies used were essential to shift to renewable energy substantially reduced carbon emission, and the majority concluded that renewable energy has a positive correlation with economic growth, job creation and welfare

scholarly journals Thermally reduced mesoporous manganese MOF @reduced graphene oxide nanocomposite as bifunctional electrocatalyst for oxygen reduction and evolution

RSC Advances ◽  
2020 ◽  
Vol 10 (46) ◽  
pp. 27728-27742 ◽  
Author(s):  
Abdul Wahab ◽  
Naseem Iqbal ◽  
Tayyaba Noor ◽  
Sheeraz Ashraf ◽  
Muhammad Arslan Raza ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Renewable Energy ◽  
Fuel Cells ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Crucial Role ◽  
Bifunctional Electrocatalyst ◽  
Renewable Energy Technologies ◽  
Energy Technologies ◽  
Reduced Graphene

Oxygen electrocatalysis plays a crucial role in harnessing energy from modern renewable energy technologies like fuel cells and metal–air batteries.

Oxidative etching for controlled synthesis of metal nanocrystals: atomic addition and subtraction

2014 ◽  
Vol 43 (17) ◽  
pp. 6288 ◽  
Author(s):  
Ran Long ◽  
Shan Zhou ◽  
Benjamin J. Wiley ◽  
Yujie Xiong
Keyword(s):  
Controlled Synthesis ◽  
Metal Nanocrystals ◽  
Oxidative Etching ◽  
Addition And Subtraction

scholarly journals A Modular Reactor for Thermochemical Energy Storage Examination of Ettringite-Based Materials

Proceedings ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 18 ◽  
Author(s):  
Chen ◽  
Kuznik ◽  
Horgnies ◽  
Johannes ◽  
Morin ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Density ◽  
Storage Temperature ◽  
Residential Buildings ◽  
High Energy ◽  
Green Energy ◽  
Hot Water ◽  
Chemical Energy ◽  
Scanning Calorimetry

More attention on renewable energy has been attracted after the achievement of Paris Agreement against climate change. Solar-based technology is supposed to be one of the most promising green energy technologies for residential buildings since its wide thermal usage for hot water and heating. However, the seasonal mismatch between its energy-production and consumption makes buildings need an energy storage system to improve the efficiency of renewable energy use. Indeed, even if different kinds of energy storage systems using sensible or latent heat already exist, thermochemical energy storage can be then recommended by considering the problems of energy dissipation during storage and low energy density for the first two methods. As potential thermochemical storage materials, ettringite (3CaO∙Al2O3∙3CaSO4∙32H2O) based materials possess high energy densities (~500 kWh/m3), low material cost (<1000 €/m3) and low storage temperature (~60–70°C), compared to salt hydrates of similar energy density like SrBr2·6H2O (42 k€/m3, ~80°C), LaCl3·7H2O (38 k€/m3, ~100°C) and MgSO4·7H2O (5 k€/m3, ~150°C). Therefore, ettringite-based materials have the possibility to be largely used in building sector by being coupled to normal solar collector systems via reversible chemical reactions (Equation (1)): (i) charging mode: hot air or hot water (>70°C) from solar collectors dehydrates ettringite to meta-ettringite, and consequently store heat to chemical energy; ii) discharging mode: humid air is pumped to material container to rehydrate meta-ettringite, and consequently release stored chemical energy as heating. However, the lack of extensive examination leads to poor knowledge on their thermal properties and limits maturity of this technology. Therefore, the aim of this work is to characterize the capacity of an ettringite-based material (named C80P20, containing ~70 wt.% ettringite) in terms of thermal energy storage by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). Besides, a modular reactor adapting to thermal characterizations of C80P20 particles has been developed for various weights (up to 300 grams). In our case, the energy density of pure ettringite is around 1012 J/g while 708 J/g for C80P20 powder in TGA-DSC. First preliminary results from modular reactor demonstrate a general energy density of 150 kWh/m3 released by the hydration process of C80P20 grains (pre-dehydrated at 80 °C) at 25 °C and 85% relative humidity. Moreover, the reactor is intended to study the durability of the energy storage material over time, and also as function of the number of charging/discharging cycles.CaO∙Al2O3∙3CaSO4∙32H2O ettringite+heat↔3CaO∙Al2O3∙3CaSO4∙32-XH2Ometa-ettringite+XH2O

Chemical Energy Conversion as Enabling Factor to Move to a Renewable Energy Economy

Green ◽  
2015 ◽  
Vol 5 (1-6) ◽  
Author(s):  
Salvatore Abate ◽  
Gabriele Centi ◽  
Siglinda Perathoner
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Smart Grids ◽  
Energy Production ◽  
Fossil Fuels ◽  
Solar Fuels ◽  
Chemical Energy ◽  
Low Carbon ◽  
Chemical Production ◽  
Low Carbon Economy

AbstractThe role of chemical energy storage and solar fuels as key elements for the sustainable chemical and energy production is discussed in this concept paper. It is shown how chemical energy storage, with the development of drop-in carbon-based solar fuels, will play a central role in the future low-carbon economy, but it is necessary to consider its out-of-the-grid use, rather than being limited to be a tool for smart grids. Related aspects discussed are the possibility to: (i) enable a system of trading renewable energy on a world scale (out-of-the-grid), including the possibility to exploit actually unused remote resources, (ii) develop a solar-driven and low-carbon chemical production, which reduces the use of fossil fuels and (iii) create a distributed energy production, going beyond the actual limitations and dependence on the grid.

NiCo LDH in-situ derived NiCoP 3D nanoflower coupling with Cu3P p-n heterojunction for efficient hydrogen evolution

Nanoscale ◽  
2021 ◽  
Author(s):  
Mengxue Yang ◽  
Yanbing Li ◽  
Teng Yan ◽  
Zhiliang Jin
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Hydrogen Evolution ◽  
Chemical Energy ◽  
Composite Photocatalyst

With the large consumption of non-renewable energy, storing solar energy as chemical energy has aroused people's wide concern. In this study, we successful developed a novel Cu3P@NiCoP composite photocatalyst to...

scholarly journals Shape-Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics?

2008 ◽  
Vol 48 (1) ◽  
pp. 60-103 ◽  
Author(s):  
Younan Xia ◽  
Yujie Xiong ◽  
Byungkwon Lim ◽  
Sara E. Skrabalak
Keyword(s):  
Controlled Synthesis ◽  
Metal Nanocrystals ◽  
Shape Controlled
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