Keywords and Phrases
3D numerical model of VRFB; Cost-effective design of VRFB; Energy storage system; New distributed flow system; New single cell design of VRFB; Vanadium redox flow battery
"Energy storage is envisioned as a key part of a renewable energy solution incorporated in a grid that overcomes two critical limits of renewable energy: intermittency and uncertainty. Among various technologies, a vanadium redox flow battery (VRFB) offers a promise because of its unique features such as long cycle life, separation of energy and power ratings, and capability of a deep discharge. The remaining challenges, however, include the limited application due to low energy density and complicated geometries. The complex geometry makes it difficult to optimize the performance and can cause a serious concern about leakage of the liquid. The goal of this dissertation is to resolve these challenges through modeling and experimental studies for newly-designed VRFB. The topic can be divided into three main efforts: flow field optimization by optimizing channels, new design for stability improvement and cost reduction, and a new concept of distributed VRFB.
First, the effects of channel and length on battery performance were investigated based on 3D electrochemical models validated by experimental measurements. Second, to address the drawbacks of traditional VRFB, a new design has been introduced to increase reliability, reduce costs, and ease assembly. This battery has a small number of parts, which can more effectively prevent electrolyte leakage. Based on PVC (polyvinyl chloride) material, it solves the problem caused by electrolyte penetration by replacing existing graphite plate. Third, the development of a new distributed VRFB for transport systems addresses the problem of insufficient power, one of the main challenges of the flow system. This new technology is more efficient for space utilization, equal weight distribution, and fueling like a gasoline vehicle, reducing charge time"--Abstract, page iv.
Liou, Frank W.
Guggenberger, Joe D., II
Mechanical and Aerospace Engineering
Ph. D. in Mechanical Engineering
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- Study on channel geometry of all-vanadium redox flow batteries
- New single cell design of a vanadium redox flow battery
- Development of a distributed vanadium redox flow battery for transport systems
xvi, 148 pages
© 2017 Mohammed Abdulkhabeer Ali Al-yasiri, All rights reserved.
Dissertation - Open Access
Electronic OCLC #
Al-yasiri, Mohammed Abdulkhabeer Ali, "Numerical and experimental study of new designs of all-vanadium redox flow batteries for performance improvement" (2017). Doctoral Dissertations. 2737.