Modeling a vanadium redox flow battery system for large scale applications

2013 ◽  
Vol 66 ◽  
pp. 26-32 ◽  
Author(s):  
Burak Turker ◽  
Sebastian Arroyo Klein ◽  
Eva-Maria Hammer ◽  
Bettina Lenz ◽  
Lidiya Komsiyska
Keyword(s):  
Large Scale ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Battery System ◽  
Vanadium Redox

scholarly journals Novel Approaches for Solving the Capacity Fade Problem during Operation of a Vanadium Redox Flow Battery

Batteries ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 48 ◽  
Author(s):  
Arjun Bhattarai ◽  
Purna Ghimire ◽  
Adam Whitehead ◽  
Rüdiger Schweiss ◽  
Günther Scherer ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Large Scale ◽  
Vanadium Redox Flow Battery ◽  
Electrolyte Imbalance ◽  
Capacity Fade ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Safety Issues ◽  
Capacity Loss ◽  
Vanadium Redox

The vanadium redox flow battery (VRFB) is one of the most mature and commercially available electrochemical technologies for large-scale energy storage applications. The VRFB has unique advantages, such as separation of power and energy capacity, long lifetime (>20 years), stable performance under deep discharge cycling, few safety issues and easy recyclability. Despite these benefits, practical VRFB operation suffers from electrolyte imbalance, which is primarily due to the transfer of water and vanadium ions through the ion-exchange membranes. This can cause a cumulative capacity loss if the electrolytes are not rebalanced. In commercial systems, periodic complete or partial remixing of electrolyte is performed using a by-pass line. However, frequent mixing impacts the usable energy and requires extra hardware. To address this problem, research has focused on developing new membranes with higher selectivity and minimal crossover. In contrast, this study presents two alternative concepts to minimize capacity fade that would be of great practical benefit and are easy to implement: (1) introducing a hydraulic shunt between the electrolyte tanks and (2) having stacks containing both anion and cation exchange membranes. It will be shown that the hydraulic shunt is effective in passively resolving the continuous capacity loss without detrimentally influencing the energy efficiency. Similarly, the combination of anion and cation exchange membranes reduced the net electrolyte flux, reducing capacity loss. Both approaches work efficiently and passively to reduce capacity fade during operation of a flow battery system.

A Stable Vanadium Redox-Flow Battery with High Energy Density for Large-Scale Energy Storage

2011 ◽  
Vol 1 (3) ◽  
pp. 394-400 ◽  
Author(s):  
Liyu Li ◽  
Soowhan Kim ◽  
Wei Wang ◽  
M. Vijayakumar ◽  
Zimin Nie ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Large Scale ◽  
High Energy ◽  
Vanadium Redox Flow Battery ◽  
High Energy Density ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Vanadium Redox

Development of Vanadium Redox Flow Battery System

1999 ◽  
Author(s):  
Takefumi Itoh ◽  
Takashi Kanno ◽  
Atsuo Ikeuchi ◽  
Kouhei Kawai ◽  
Takushi Hara ◽  
...  
Keyword(s):  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Battery System ◽  
Vanadium Redox
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