全铁液流电池与室温氢气生产相结合.pdf

1、25 JUNE 2025POSTDOCIFBF 2025MIKHAIL PETROVALL-IRON FLOW BATTERY COUPLED WITH ROOM TEMPERATURE HYDROGEN PRODUCTIONMIKHAIL PETROV,POSTDOC AARHUS UNIVERSITY,DEPARTMENT OF BIOLOGICAL AND CHEMICAL ENGINEERINGIFBF 2025MIKHAIL PETROV25 JUNE 2025POSTDOCHYDROGEN?FOR THE SAKE OF WHAT?Hydrogen evolution is reg

2、arded as an undesirable and adverse reaction to be avoided in flow batteries.However it is possible to take advantage of it IFBF 2025MIKHAIL PETROV25 JUNE 2025POSTDOCDUAL FLOW CONCEPTIn the dual flow approach,we aim to run HER/OER in separate reactors filled with catalytic materials that can deplete

3、 pre-charge electrolytes through corresponding chemical reactions.By controlling the valves,we can switch the system between a basic energy storage mode and a mixed mode that incorporates H2/O2 production.IFBF 2025MIKHAIL PETROV25 JUNE 2025POSTDOCADVANAGES OF DUAL FLOWvs ElectrolysisSpatially decoup

4、led HER and OERLower cell voltagesvs Flow BatteriesEnhanced capacity Can adjust to the pace of renewable energy by switching between energy storage and H2 production UniqueOther electrosynthetic reactions are available to coupleIFBF 2025MIKHAIL PETROV25 JUNE 2025POSTDOCAmstutz,V.et al,(2014).Energy

5、and Environmental ScienceReynard,D.Et al(2021).Cell Reports Physical ScienceJi,Y.et al (2020).Int.Journal of Hydrogen EnergyZhang,F.et al(2021).JACSOBJECTIVESUnlike most previous works,we focus on alkaline conditions(easier to find RM for the positive side)and redox mediators with potentials near HE

6、R/OER.25 JUNE 2025POSTDOCIFBF 2025MIKHAIL PETROVBACKBONEFLOW BATTERY AND MEDIATORSIFBF 2025MIKHAIL PETROV25 JUNE 2025POSTDOCREDOX MEDIATORS0.2 M Fe-DIPSO in 4 M KOH and 0.25 M K4Fe(CN)6/0.25 M K3 Fe(CN)6 in 1 M KOH,100 mVs810121416-1.0-0.50.00.51.0SoC 10SoC 90SoC 90OERPotential vs.SHE(V)pH Negolyte