Title:	New organic-air flow fuel cell and electrolyser for stationary energy storage
Authors:	Charvát, Jiří Mazúr, Petr Pocedič, Jaromír Richtr, Přemysl Mrlík, Jindřich Kosek, Juraj Akrman, Jiří Kubáč, Lubomír
Citation:	CHARVÁT, J. MAZÚR, P. POCEDIČ, J. RICHTR, P. MRLÍK, J. KOSEK, J. AKRMAN, J. KUBÁČ, L. New organic-air flow fuel cell and electrolyser for stationary energy storage. JOURNAL OF POWER SOURCES, 2022, roč. 520, č. FEB 1 2022, s. nestránkováno. ISSN: 0378-7753
Issue Date:	2022
Publisher:	Elsevier
Document type:	článek article
URI:	2-s2.0-85119903174 http://hdl.handle.net/11025/49892
ISSN:	0378-7753
Keywords in different language:	Organic-oxygen fuel cell;Organic-oxygen electrolyser;Anthraquinone disulfonic acid;Oxygen reduction electrode;Oxygen evolution reaction;Gas diffusion electrode
Abstract in different language:	In this work, we propose an innovative hybrid flow battery using anthraquinone disulfonic acid (AQDS) based negolyte in an AQDS-oxygen fuel cell and AQDS-oxygen electrolyser as a discharging and charging devices, respectively. The performance of the system is studied under defined conditions (SoC, temperature) sing a complex methodology including EIS, dynamic load curves, steady-state galvanostatic loads and galvanostatic charge-discharge cycles. The internal components of both devices are optimised with respect to performance and its stability. When compared to a standard vanadium-based negolyte, the AQDS-based fuel cell shows lower ohmic resistance and lower capacity fade due very slow AQDS permeation through the cation-exchange membrane. On the other hand, its open circuit voltage is approx. 0.48 V lower and the fuel cell shows higher overall resistance due to deteriorating performance of oxygen gas diffusion electrode, which is most probably related to the adsorption of the permeated AQDS on the platinum electro-catalyst. The method of performance restoration by applying opposite polarization to the fuel cell is successfully tested and optimised enabling stable battery operation.
Rights:	Plný text je přístupný v rámci univerzity přihlášeným uživatelům. © Elsevier
Appears in Collections:	Články / Articles OBD

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