redox flow battery storage as long duration storage for ... · redox flow battery –state of the...
Post on 26-May-2020
9 Views
Preview:
TRANSCRIPT
© Fraunhofer
Redox flow battery storage as long duration storage for small villages or industrial areas
Dr. P. Fischer, Jens Noack, Prof. Dr. J. Tübke Karlsruhe,16.10.2019
Folie 2
© Fraunhofer ICT
Germany
Redox Flow Application Center
Germany
Dep. of Applied Electrochemistry
Folie 3
© Fraunhofer ICT
Energy Storage - Overview
Usecases for storage systems
Folie 4
© Fraunhofer ICT
Energy Storage - Overview
Folie 5
© Fraunhofer ICT
Energy Storage - Overview
Numbers from X. Luo et al, “Overview of current development in electrical energy storage technologies and the application potential in power system operation”, Applied Energy Vol. 137, 2015, pp 511–536
Folie 6
© Fraunhofer ICT
Redox Flow Battery - principle
Electrolyte Electrolyte
Membrane
Electrode
Pump
Power source/load
+ -
Pump
Electrode
Folie 7
© Fraunhofer ICT
Redox Flow Battery - principle
Folie 8
© Fraunhofer ICT
Redox Flow Battery - principle
redox flow battery stack
bipolar plate
membrane
electrode
flow frameterminal
each electrochemical cell consists of bipolar plate/ current collector embedded in flow frame, electrode felt and separator/ membrane
Folie 9
© Fraunhofer ICT
Redox Flow Battery - principle
Small-size RFB (Adiro/ Fraunhofer ICT for Festo Didaktik)
Folie 10
© Fraunhofer ICT
Redox Flow Battery - principle
Large-scale RFB (Fraunhofer ICT )
Folie 11
© Fraunhofer ICT
There are three types of electrolytes. They differ in concentration ranges and additives:
Redox Flow Battery – state of the art
Folie 12
© Fraunhofer ICT
Redox Flow Battery – state of the art
There are two commercial systems established in the market.
◼ all-vanadium - companies like Sumitomo
electrics, Rongke Power, UniEnergy, ThyssenKrupp…. and many many more
◼ zinc bromine – companies like redflow,
EnSync , Primus Power, Meineng Energy, Lotte Chemical, Jofemar
They usually come in different sizes, but mostly ascontainerized systems.
cabinet system
single-/ multi container system
platform system
Folie 13
© Fraunhofer ICT
Redox Flow Battery – state of the art
Germany has already
developed strong Redox FlowBattery industry with anetwork of suppliers,distributers and battery
producers.
But in Korea there aresome importantproducers too (like H2Inc., Standard Energy,Nuriplan)
Karlsruhe
Mannheim
Nürnberg
Pfinztal
Dortmund
Freudenstadt
Glatten
Alzenau sales Rongke Power
sales Rongke Power
Jena
Koblenz
Olching
sales ESS
Oldenburg
Folie 14
© Fraunhofer ICT
Drawbacks :
There are some drawbacks of the
commercial system. There is a limited
temperatur window of VRFB due to
percipation of electrolyte above 40°C.
Regular operation temperatur window:
5°C – 38°C
Some electrolyte formulations are
temperatur stable for higher
temperatures (e.g. mixed acid electrolyte
by UET)
V2O5 percipitation above 40°C
1. day 2. day 3. day 4. day
Redox Flow Battery – state of the art
Folie 15
© Fraunhofer ICT
Drawbacks:
The vanadium price is quite constant during
the last 5 years at around 6 – 8 $/lb.
Nevertheless tis price limits capacity costs of
electrolyte to ~60 - 80 $/kWh.
Today vanadium prices are skyrocketing due
to new regulations in China.
New financial models like leasing are
evaluated at the moment to deacrease
costs.
Redox Flow Battery – state of the art
Image: TTP Sqaures Inc. / Vanitec
Folie 16
© Fraunhofer ICT
Redox Flow Battery – emerging systems
There new systems, which are very close tocommercialization.
◼ iron- iron – companies like ESS Inc., WhEST,
Arrotech, Epsilor
◼ hydrogen bromine – companies like
Elestor, (Enstorage)
◼ aqueous organic – companies like Jena
Batteries, Kemiwatt, Green Energy Storage
◼ aqueous metal complex – companies like
Lockheed Martin
◼ alkaline zinc ferricyanide – companies
like Vizn
Image: ViZn/ green Energy Times
Image: Elestor
Folie 17
© Fraunhofer ICT
Lighthouse projekt RedoxWind:
storage of fluctuating renewables in the megawatt range. Development and erection of a 2 MW / 20
MWh redox flow battery
→ Coupling of battery at direct current intermittent circuit of the 2 MW wind at ICT Campus
→ Development of cost efficient production technology for the production of stacks.
→ Synnergies of shared power electronics in wind turbine and battery
Funded by the county ofBaden Württemberg
Project - RedoxWind
Folie 18
© Fraunhofer ICT
RedoxWind – Energy Infrastruktur at Fraunhofer ICT
200 kW/200kWh LiFePo Battery
ICT
BHKW + Gaskessel+th. SpeicherRFBWKA Netz
Folie 19
© Fraunhofer ICT
RedoxWind – Energy Infrastruktur at Fraunhofer ICT
200 kW/200kWh LiFePo Battery
2MW/20MWh VRFB
2MW wind turbine
Folie 20
© Fraunhofer ICT
Project RedoxWindErection of the 2MW wind turbine
For the RFB-ESS a building was build with laboratories, workshops and testing facilities for flow batteries and the battery hall (20 x 30 m). The Building was finished end of 2016.
In 2017 the company Qreon erected the 2MW wind turbine based on the Repower E82. The Qreon wind can connect the wind turbine with the VRFB as well as the 200kW/200kWh LIB battery (iron phosphate).
Folie 21
© Fraunhofer ICT
Project RedoxWind - Images of the plantPlanning the plant
Fluid circuit research module (2x) Fluid circuit battery module (4x)
Folie 22
© Fraunhofer ICT
Project RedoxWind - Images of the plantStack
Stack
◼ 5.7 kW battery stack
◼ dimensions: 550 mm x 920 mm x 406 mm
◼ number of cells: 40
◼ active area: ca. 1400 cm2
◼ stack voltage: 32 V - 64 V
◼ max nominal current: 140 A
Folie 23
© Fraunhofer ICT
top related