Nanocage-oriented Induction for Highly Ion-selective Sub-1-Nanometer Channels of Membranes

2022 ◽  
Author(s):  
Lei Hu ◽  
Li Gao ◽  
Mengting Di ◽  
Xiaoming Yan ◽  
Xiaobin Jiang ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Energy Industry ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Renewable Energy Industry

Designing membrane with highly ion-selective conductivity is one of key question for the large-scale application of redox flow batteries, which can unlock the potential of the renewable energy industry. The...

Aqueous Redox Flow Batteries: How ‘Green’ are the Redox Active Materials?

2021 ◽  
Author(s):  
Zachary Deller ◽  
Lathe A Jones ◽  
Subashani Maniam
Keyword(s):  
Solar Wind ◽  
Renewable Energy ◽  
Energy Storage ◽  
Energy Industry ◽  
Active Materials ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries ◽  
Renewable Energy Industry

Energy storage using aqueous organic redox flow batteries (ORFBs) is gaining momentum in recent years parallel with the renewable energy industry, principally to store energy from solar, wind and hydro...

scholarly journals Vanadium Redox Flow Batteries: A Review Oriented to Fluid-Dynamic Optimization

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 176
Author(s):  
Iñigo Aramendia ◽  
Unai Fernandez-Gamiz ◽  
Adrian Martinez-San-Vicente ◽  
Ekaitz Zulueta ◽  
Jose Manuel Lopez-Guede
Keyword(s):  
Large Scale ◽  
Numerical Models ◽  
Fluid Dynamic ◽  
Renewable Energy Sources ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Batteries ◽  
Design Flexibility ◽  
Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

Large-scale energy storage systems (ESS) are nowadays growing in popularity due to the increase in the energy production by renewable energy sources, which in general have a random intermittent nature. Currently, several redox flow batteries have been presented as an alternative of the classical ESS; the scalability, design flexibility and long life cycle of the vanadium redox flow battery (VRFB) have made it to stand out. In a VRFB cell, which consists of two electrodes and an ion exchange membrane, the electrolyte flows through the electrodes where the electrochemical reactions take place. Computational Fluid Dynamics (CFD) simulations are a very powerful tool to develop feasible numerical models to enhance the performance and lifetime of VRFBs. This review aims to present and discuss the numerical models developed in this field and, particularly, to analyze different types of flow fields and patterns that can be found in the literature. The numerical studies presented in this review are a helpful tool to evaluate several key parameters important to optimize the energy systems based on redox flow technologies.

The Factors Affect Company Performance in Renewable Energy Industry

2017 ◽  
Vol 5 (6) ◽  
pp. 188-204 ◽  
Author(s):  
YINLIN TSAI ◽  
Johnny Tung
Keyword(s):  
Renewable Energy ◽  
Capital Intensity ◽  
Performance Measure ◽  
Energy Industry ◽  
Long Term Results ◽  
Company Performance ◽  
Firm Level ◽  
Country Level ◽  
Performance Determinants ◽  
Renewable Energy Industry

Concerns about global warming and climate change are generating interest in renewable energy measures with the purpose to minimize environmental impact. Promoting renewable energy production becomes indispensable since its represent a tiny fraction of energy consumed. The purpose of this study is to identify the performance determinants are divided in country specific advantages and firm specific advantages. Companies were selected from Bloomberg and filtered due to its information ava ilability from COMPUSTAT to construct a Panel Data structure. The results proved that both country level (shares of renewable and energy consumption) and firm level (market capitalization, employee growth rate and capital intensity) determinants were signi ficant in the renewable energy industry. Through the analysis, it’s possible to realize that return on assets it’s a performance measure with long term results, but unlike it, gross profit margin is variable that demonstrate short term results. We conclude that renewable energy industry has a great potential due to its results performed.

scholarly journals Setting an agenda for biofouling research for the marine renewable energy industry

2017 ◽  
Vol 19 ◽  
pp. 292-303 ◽  
Author(s):  
J. Loxton ◽  
A.K. Macleod ◽  
C.R. Nall ◽  
T. McCollin ◽  
I. Machado ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Industry ◽  
Marine Renewable Energy ◽  
Renewable Energy Industry

scholarly journals An Influence of Group Purchasing Organizations on Financial Security of SMEs Operating in the Renewable Energy Sector—Case for Poland

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2926 ◽  
Author(s):  
Grzegorz Zimon ◽  
Marek Sobolewski ◽  
Grzegorz Lew
Keyword(s):  
Renewable Energy ◽  
Environmental Changes ◽  
Research Question ◽  
Energy Sector ◽  
Energy Industry ◽  
The European Union ◽  
Operating Cycle ◽  
Cash Conversion Cycle ◽  
Energy Companies ◽  
Renewable Energy Industry

European countries are increasingly using renewable energy. Poland is an outsider of such solutions. The Polish energy sector is primarily based on energy produced from coal. However, environmental changes and regulations of the European Union are forcing the increased use of energy from renewable sources. Renewable energy is an industry that is still developing in Poland. At the same time, Poland is a country where the political decisions of the government over the last few years have resulted in a significant limitation of the possibilities of renewable energy development. These actions have also resulted in lowering the profitability of the currently operating renewable energy enterprises, especially those from the sector of small and medium-sized enterprises. An opportunity for SMEs operating in the renewable energy sector is to merge into industry purchasing groups. The aim of the article—and at the same time the research question—is: Is it financially safer for renewable energy companies to operate within purchasing groups compared to companies operating independently in this industry? Traditional ways of purchasing can be transferred to integrated purchasing systems, which will be created by purchasing groups associating renewable energy companies. For this purpose, the financial effects of the implementation and functioning of the purchasing groups in the renewable energy sector in relation to entities operating independently were examined. In the research of renewable energy SMEs, a comparative analysis of key indicators determining the possibility of continuing the activity of these entities was made. The following indicators were examined: current financial liquidity ratio, return on sales, operating cycle, cash conversion cycle, share of receivables in current assets, share of inventory in current assets, turnover ratios, level of receivables, liabilities and profitability. The scientific literature is dominated by studies on purchasing groups in the pharmaceutical and construction industries. Thanks to the research conducted, it has been indicated that the renewable energy industry can also improve its profitability, and thus the possibility of safe continuation of operations by extending the business model to inter-entity cooperation within purchasing groups. Increasing the efficiency of individual entities of the renewable energy industry within purchasing groups becomes particularly important during the COVID-19 pandemic. Statistical analyses and their graphic presentation present the significant impact on the safety and profitability of renewable energy entities in the form of purchasing groups.

scholarly journals Tuning the Performance of Aqueous Organic Redox Flow Batteries from First Principles

2020 ◽  
Author(s):  
Junting Yu ◽  
Tianshou Zhao ◽  
Ding Pan
Keyword(s):  
Energy Storage ◽  
First Principles ◽  
High Performance ◽  
Large Scale ◽  
Electrical Energy ◽  
Ab Initio Molecular Dynamics ◽  
Redox Potentials ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Entropy Effects

<div>Aqueous organic redox flow batteries have many appealing properties in the application of large-scale energy storage. The large chemical tunability of organic electrolytes shows great potential to improve the performance of flow batteries. Computational studies at the quantum-mechanics level are very useful to guide experiments, but in previous studies explicit water interactions and thermodynamic effects were ignored. Here, we applied the computational electrochemistry method based on ab initio molecular dynamics to calculate redox potentials of quinones and their derivatives. The calculated results are in excellent agreement with experimental data. We mixed side chains to tune their reduction potentials, and found that solvation interactions and entropy effects play a significant role in side-chain engineering. Based on our calculations, we proposed several high-performance negative and positive electrolytes. Our first-principles study paves the way towards the development of large-scale and sustainable electrical energy storage.</div>

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