direkt zum Inhalt springen

direkt zum Hauptnavigationsmenü

Sie sind hier

TU Berlin

Page Content

There is no English translation for this web page.

Veröffentlichungen

Comparison of Dynamic Charge Acceptance Tests on Lead-Acid Cells for Carbon Additive Screening
Citation key https://doi.org/10.1002/ente.202101051
Author Bozkaya, Begüm and Bauknecht, Sophia and Settelein, Jochen and Kowal, Julia and Karden, Eckhard and Giffin, Guinevere A.
Pages 2101051
Year 2022
DOI https://doi.org/10.1002/ente.202101051
Journal Energy Technology
Volume n/a
Number n/a
Abstract Including a certain amount of carbon in the negative active material is currently the state-of-the-art method to improve the dynamic charge acceptance (DCA) of lead-acid batteries. The DCA is a key parameter of batteries used in micro-hybrid cars where brake energy recuperation is implemented. To find the optimal carbon additive, it is essential to test the carbon both in short-term and long-term tests. This work investigates the long-term and short-term DCA of 2 V, 2.5 Ah lead-acid cells and correlates the results with the external surface area of the carbon. Five different carbons with tailored particle size (27 nm – 633 nm) and external surface area (7.1 m2 g-1 – 159.3 m2 g-1) were employed as additives in the negative electrodes. The charge acceptance of cells according to the charge acceptance test 2 (SBA), the DCA (EN) test and the Run-in DCA test (Ford) is increased via an increase in the carbon external surface area. A correlation between the short-term tests and the first weeks of the Run-in DCA test is established for the carbon impact. After several weeks of Run-in DCA test, the carbon effect is diminished and only a differentiation between high and low DCA cells is possible. This article is protected by copyright. All rights reserved.
Link to publication Download Bibtex entry

Zusatzinformationen / Extras

Quick Access:

Schnellnavigation zur Seite über Nummerneingabe