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December 15, 2024
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Redox flow stacks with tubular cell design-Feasibility and performance

Publicated to: JOURNAL OF POWER SOURCES. 628 235839- - 2025-02-01 628(), DOI: 10.1016/j.jpowsour.2024.235839

Authors:

Brandes, F; Ressel, S; Kuhn, P; Laube, A; Ramthun, J; Janshen, N; Chica, A; Weidlich, C; Jeske, M; Fischer, S; Struckmann, T
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Affiliations

DECHEMA Res Inst, Appl Electrochem, Theodor Heuss Allee 25, D-60486 Frankfurt, Germany - Author
FUMATECH BWT GmbH, Carl Benz Str 4, D-74321 Bietigheim Bissingen, Germany - Author
Hamburg Univ Appl Sci, Dept Mech Engn & Prod Management, Berliner Tor 21, D-20099 Hamburg, Germany - Author
Univ Politecn Valencia, Consejo Super Invest Cient, Inst Tecnol Quim, Ave Naranjos S-N, Valencia 46022, Spain - Author
UNIWELL Rohrsysteme GmbH & Co KG, Siegelfelder Str 1, D-96106 Ebern, Germany - Author
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Abstract

Redox flow batteries are a reliable option for the storage of energy from renewable resources and the all vanadium cell chemistry features the highest level of commercialization. The storage market demands further cost reductions. A tubular cell design can lower power specific costs by featuring reduced material needs and enabling the use of cost efficient extrusion processes of cell components. The feasibility of tubular all vanadium cells has already been shown in previous studies of the authors. In this study, we report on the progress of a recent cell generation and the integration of single cells into stacks. The performance of the current cell and stack generation has reached the region of planar cells with discharge current densities of i(dch )> 300 mA cm(-2) at SOC approximate to 0.5 and U-cell = 0.8V as well as maximum power densities of P / Area > 300 mW cm(-2) with respect to the membrane area and of P / Volume > 750 kW m(-3) with respect to the cell body volume. The single cell performance turns out to be reproduceable with negligible losses at stack level in a 5p setup. In this way, the feasibility of tubular stacks is demonstrated. We claim the tubular approach to be transferrable to other cell chemistries.
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Keywords

BatteryCosExtrusion productioMembranesRedox flow batteryTubular cellsTubular stacks

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal JOURNAL OF POWER SOURCES due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position 7/44, thus managing to position itself as a Q1 (Primer Cuartil), in the category Electrochemistry.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-03:

  • WoS: 2
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-03:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 9 (PlumX).
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Germany.

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Awards linked to the item

This work was done within the research projects StaTuR supported by the German Federal Ministry for Economic Affairs and Climate Action (FKZ: 03ET6151 A) and TuRoX (X-Energy) supported by the German Federal Ministry of Education and Research (FKZ: 13FH1I12IA) . We thank Bernd Hildenbrand, Marcel Quittkat and the Leonardis foun-dation for the continuous support of our work on tubular cells. We also thank Andreas Arlt (WEVO-CHEMIE GmbH) for his great support in the sealing development and Christian Modrzynski (DECHEMA) for tempering the graphite felts. Dr. Chica thanks to the Spanish Minis-tery of Science, Innovation and Universities for its support (Project: TED2021-130372B-C44) .
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