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H2020Individual fellowship2015–2017

GLOBE · All Organic Redox Flow Batteries

Horizon 2020 — Marie Skłodowska-Curie Actions

Duration
2015-09-01 → 2017-08-31
EU contribution
€212,195
Participants
1
Scheme
MSCA-IF-EF-ST

Lines connect the coordinator with its partners.

Results in brief

All Organic Redox Flow Batteries

Transition to renewable energy sources depends on proper electrical energy storage (EES) technology for renewable energy management in order to handle the varying solar and wind generated electricity. The project’s main objective was to provide a low-cost solution for EES, based on organic redox active species for both redox flow and solid-state batteries. This could facilitate the EU’s transition to renewable energy sources. Several important breakthroughs were achieved during this project. A great number of redox active species was screened, where a great number of them is electrochemically stable and reversible, some are very soluble in water, however there are chemical stability issues with some organic redox species. A number of redox active species for the positive side were developed, which have great solubility in water and are electrochemically reversible however not sufficiently chemically stable. A method has been developed to improve the cell potential of organic redox flow batteries with pH dependent redox potential. New type of nickel hydroxide-oligomer battery was developed. A semi organic redox flow battery was developed and directly fully charged directly using the solar energy and the home-made semiconductor. Overall, a sound knowledge has been gathered on organic redox active species and their application in redox flow, solid-state and directly solar charged redox flow batteries.

Data: CORDIS, © European Union

Project objective

European Union (EU) intends to significantly reduce the CO2 emissions in the following decades. To do this, the use of fossil fuels in all sectors and particularly in power sector will be continuously reduced and replaced with renewable energy sources. Such transition depends on proper electrical energy storage (EES) technology for renewable energy management in order to handle the varying solar and wind generated electricity. So far only redox flow batteries (RFB) show potential for renewable energy management because of: i) scalability between storage capacity and power; ii) short response time; iii) good cycling capability, iv) long discharge time and v) low cost potential. The use of state-of-the-art metal based RFBs is limited by their relatively high costs that inherently are linked to the low current and energy density. Recently a breakthrough in RFB technology is reported, high current densities are achieved in a RFB based on organic-halide electrolytes. Organic-halide RFB can store electricity at almost ten times lower life cycle cost compared to metal based RFB, due to increased current density and lower electrolyte costs. One of the objectives of the current proposal is to investigate feasibility and stability of organic-halide RFB. The main goal of the fellowship is to build All Organic RFB by replacing the halide part (Br2) with less hazardous and cheap organic electrolytes which have extremely fast electrokinetics: (2,2,6,6-Tetramethylpiperidin-1-yl)oxy (TEMPO) and hydroxylated anthraquinone di-sulphonic acids. Since latter are not commercially available, a new chemical synthesis routes will be developed. Nanoporous films and anion exchange membranes will be considered as an alternative to expensive proton conductive membrane-Nafion. All Organic RFBs show great potential for low cost EES and could facilitate EU transition to low carbon emission/renewable energy based economy.

Original text from CORDIS.

Participants

  • AARHUS UNIVERSITET · Aarhus CCoordinatorDenmark

Links

Data: CORDIS, © European Union