An electrochemical thermal model for vanadium redox flow battery lifetime estimation under dynamic loading conditions

IF 5.5 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yasmine AbdelMessih, Amgad El-Deib, Essam Elkaramany
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Abstract

Vanadium redox flow batteries (VRFBs) offer a scalable and durable solution for integrating intermittent renewable energy sources into the power grid. To evaluate their performance under realistic operating conditions, we present a high-precision two-dimensional multiphysics model for VRFBs that captures the coupling relationships between electrochemical reactions and thermodynamics. A statistically derived long-term varying power profile is compared with a continuous current load of equivalent average current to evaluate battery performance under significant load variations. The results indicate a reduction in system efficiency, with an approximate 8% decrease under dynamic loading conditions, primarily due to current fluctuations and increased pump power demands. However, the state of health (SOH) remained largely unaffected, stabilizing around 99.3%, which suggests minimal degradation over a full day of intermittent operation. This suggests that VRFBs can effectively handle intermittent operation without significant degradation, making them suitable for renewable energy integration.

动态加载条件下钒氧化还原液流电池寿命估算的电化学热模型
钒氧化还原液流电池(vrfb)为将间歇性可再生能源集成到电网中提供了可扩展且耐用的解决方案。为了评估vrfb在实际操作条件下的性能,我们提出了一个高精度的二维多物理场模型,该模型捕捉了电化学反应和热力学之间的耦合关系。将统计导出的长期变化功率曲线与等效平均电流的连续电流负载进行比较,以评估显著负载变化下的电池性能。结果表明,系统效率下降,在动态负载条件下下降了大约8%,主要是由于电流波动和泵功率需求增加。然而,健康状态(SOH)基本未受影响,稳定在99.3%左右,这表明在一整天的间歇操作中,性能下降最小。这表明vrfb可以有效地处理间歇性运行而不会出现明显的退化,适合可再生能源集成。
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来源期刊
Materials for Renewable and Sustainable Energy
Materials for Renewable and Sustainable Energy MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
7.90
自引率
2.20%
发文量
8
审稿时长
13 weeks
期刊介绍: Energy is the single most valuable resource for human activity and the basis for all human progress. Materials play a key role in enabling technologies that can offer promising solutions to achieve renewable and sustainable energy pathways for the future. Materials for Renewable and Sustainable Energy has been established to be the world''s foremost interdisciplinary forum for publication of research on all aspects of the study of materials for the deployment of renewable and sustainable energy technologies. The journal covers experimental and theoretical aspects of materials and prototype devices for sustainable energy conversion, storage, and saving, together with materials needed for renewable fuel production. It publishes reviews, original research articles, rapid communications, and perspectives. All manuscripts are peer-reviewed for scientific quality. Topics include: 1. MATERIALS for renewable energy storage and conversion: Batteries, Supercapacitors, Fuel cells, Hydrogen storage, and Photovoltaics and solar cells. 2. MATERIALS for renewable and sustainable fuel production: Hydrogen production and fuel generation from renewables (catalysis), Solar-driven reactions to hydrogen and fuels from renewables (photocatalysis), Biofuels, and Carbon dioxide sequestration and conversion. 3. MATERIALS for energy saving: Thermoelectrics, Novel illumination sources for efficient lighting, and Energy saving in buildings. 4. MATERIALS modeling and theoretical aspects. 5. Advanced characterization techniques of MATERIALS Materials for Renewable and Sustainable Energy is committed to upholding the integrity of the scientific record. As a member of the Committee on Publication Ethics (COPE) the journal will follow the COPE guidelines on how to deal with potential acts of misconduct. Authors should refrain from misrepresenting research results which could damage the trust in the journal and ultimately the entire scientific endeavor. Maintaining integrity of the research and its presentation can be achieved by following the rules of good scientific practice as detailed here: https://www.springer.com/us/editorial-policies
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