New organic-air flow fuel cell and electrolyser for stationary energy storage

Kód výsledku v IS VaVaI

RIV/28778758:_____/22:N0000001 - isvavai.cz

Nalezeny alternativní kódy

RIV/60461373:22340/22:43925231 RIV/49777513:23640/22:43965961

Výsledek na webu

https://www.sciencedirect.com/science/article/abs/pii/S0378775321013021

DOI - Digital Object Identifier

10.1016/j.jpowsour.2021.230811

Jazyk výsledku

angličtina

Název v původním jazyce

New organic-air flow fuel cell and electrolyser for stationary energy storage

Popis výsledku v původním jazyce

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) using 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.

Název v anglickém jazyce

New organic-air flow fuel cell and electrolyser for stationary energy storage

Popis výsledku anglicky

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) using 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Power Sources

ISSN

0378-7753

e-ISSN

1873-2755

Svazek periodika

530

Číslo periodika v rámci svazku

1 February 2022

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

230811

Kód UT WoS článku

000744249600003

EID výsledku v databázi Scopus

2-s2.0-85119903174