High performance acid–base junction flow batteries using an asymmetric bipolar membrane with an ion-channel aligned anion exchange layer

2021 ◽  
Vol 9 (12) ◽  
pp. 7955-7966
Author(s):  
Jae-Hun Kim ◽  
In Seop Chang ◽  
Seung-Hyeon Moon
Keyword(s):  
Ion Channel ◽  
High Performance ◽  
Water Dissociation ◽  
Bipolar Membrane ◽  
Acid Base ◽  
Junction Flow ◽  
Conversion System ◽  
Acid And Base ◽  
New Type ◽  
Energy Conversion System

An acid–base junction flow battery (ABJFB) is a new type of energy conversion system using neutralization and water dissociation in the presence of acid and base electrolytes.

scholarly journals Energy Harvesting by Waste Acid/Base Neutralization via Bipolar Membrane Reverse Electrodialysis

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5510
Author(s):  
Andrea Zaffora ◽  
Andrea Culcasi ◽  
Luigi Gurreri ◽  
Alessandro Cosenza ◽  
Alessandro Tamburini ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Power Density ◽  
Operating Conditions ◽  
Alkaline Solutions ◽  
Bipolar Membrane ◽  
Acid Base ◽  
Reverse Electrodialysis ◽  
Acid And Base ◽  
Parasitic Currents ◽  
Added Salt

Bipolar Membrane Reverse Electrodialysis (BMRED) can be used to produce electricity exploiting acid-base neutralization, thus representing a valuable route in reusing waste streams. The present work investigates the performance of a lab-scale BMRED module under several operating conditions. By feeding the stack with 1 M HCl and NaOH streams, a maximum power density of ~17 W m−2 was obtained at 100 A m−2 with a 10-triplet stack with a flow velocity of 1 cm s−1, while an energy density of ~10 kWh m−3 acid could be extracted by a complete neutralization. Parasitic currents along feed and drain manifolds significantly affected the performance of the stack when equipped with a higher number of triplets. The apparent permselectivity at 1 M acid and base decreased from 93% with the five-triplet stack to 54% with the 38-triplet stack, which exhibited lower values (~35% less) of power density. An important role may be played also by the presence of NaCl in the acidic and alkaline solutions. With a low number of triplets, the added salt had almost negligible effects. However, with a higher number of triplets it led to a reduction of 23.4–45.7% in power density. The risk of membrane delamination is another aspect that can limit the process performance. However, overall, the present results highlight the high potential of BMRED systems as a productive way of neutralizing waste solutions for energy harvesting.

scholarly journals Control of PMSG based variable speed wind energy conversion system connected to the grid with PI and ADRC approach

2020 ◽  
Vol 11 (2) ◽  
pp. 953
Author(s):  
Youssef Barradi ◽  
Khalida Zazi ◽  
Malika Zazi ◽  
Naoufel Khaldi
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Energy Conversion ◽  
High Performance ◽  
Synchronous Generator ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Disturbance Rejection Control ◽  
Conversion System ◽  
Energy Conversion System

This paper presents the modeling and simulation of wind energy Conversion System using the Permanent Magnet Synchronous Generator (PMSG). <br /> The objectives are: to extract the maximum power of the wind speed by controlling the electromagnetic torque of the PMSG, to maintain constant the DC-link voltage despite the wind speed variations and to attain the unity power factor. In order to ensure a regulation with high performance and a good robustness against the internal and the external disturbances, a new control strategy called the Active Disturbance Rejection Control (ADRC) is used. Therefore, the Analysis and simulation of the ADRC and PI controllers are developed with MATLAB/Simulink software. The performance of these controllers is compared in term of references tracking, robustness <br /> and grid faults.

scholarly journals High-Performance Bipolar Membrane Development for Improved Water Dissociation

2020 ◽  
Vol 2 (11) ◽  
pp. 4559-4569 ◽  
Author(s):  
Yingying Chen ◽  
Jacob A. Wrubel ◽  
W. Ellis Klein ◽  
Sadia Kabir ◽  
Wilson A. Smith ◽  
...  
Keyword(s):  
High Performance ◽  
Water Dissociation ◽  
Bipolar Membrane ◽  
Membrane Development
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