EPFL - VALAIS - WALLIS - École Polytechnique Fédérale ... · PDF...
Transcript of EPFL - VALAIS - WALLIS - École Polytechnique Fédérale ... · PDF...
Hubert H. Girault Laboratoire d’Electrochimie Physique et Analytique
EPFL - VALAIS - WALLIS Démonstrateur de Martigny Sinergy - CREM - District de Martigny
Martigny , June 25, 2015
Martigny
Apr 11th 2015
The beginning of a new era…
A 40 MW battery farm at Dayton Power and Light's (DP&L) Tait generating station, just south of Dayton, Ohio, built by AES Energy Storage.Courtesy of AES Energy Storage
Citigroup estimates a 240GW global market for energy storage worth more than $400 billion by 2030. That is excluding car batteries.
Mercedes-Benz takes on Tesla with a home battery of its own
http://www.engadget.com/2015/06/09/mercedes-benz-home-battery/
Each pack only holds 2.5kWh of electricity, but you can combine up to eight of them to hold 20kWh
Pump HydroNant de Drance
LEPA - Martigny
Redox Flow Battery
Science 334(6058), 928–935 (Nov. 2011).
Charge, reduction of V(III) to V(II) & oxidation of V(IV) to V(V)
Discharge, oxidation of V(II) to V(III) & reduction of V(V) to V(IV)
Maria Skyllas-Kazacos (1985) University of New South Wales, Australia
V–Ce RFB for water electrolysis
Ce(IV)
Ce(III) Ce(III)
V(II)V(II)Ce(IV)
V(III)V(III)
ValveValve
ValveValve
MembranePump Pump
Load H2O2
Ce-V redox flow battery : conventional electrochemical discharge
TankTank
Dual-circuit system : discharge via two catalysed chemical reactions
Mo
C c
atal
ytic
reac
tor
2
IrO
or R
uO
cata
lytic
reac
tor
22
Mo2C on ceramics
Pilot PlantFull control
Today, Americans’ daily spending on energy can be split into two large chunks: about $1 billion on electricity and $1.4 billion on fuel for their vehicles. In the past, electricity providers had no way to tap into the latter market. Plug-in cars (and fuel cell cars) should change that.
http://www.economist.com/news/business/21621850-electric-cars-could-help-save-power-utilities-death-spiral-adapting-plug-ins
Electric cars could help save power utilities from a “death spiral”
From electricity to fuel
1 kWh = 20 g of hydrogen
www.planetmattersandmore.com
www.globalenergyprofs.com
conserve-energy-future.com
www.auctigo.com
Fuel cell car
Electric car
idowns.net
H2
DC Fast charge
www.earthtimes.org
O2
Electrolyser
Lithium Battery
H2 storage
Electricity storage
Redox flow battery
Electric cars
Tank to wheel efficiency : 18 % petrol - 22% diesel Well to wheel efficiency : 15 % petrol -18% diesel
DOI: 10.1109/JPROC.2006.883715
http://ec.europa.eu/transport/themes/strategies/consultations/doc/2009_03_27_future_of_transport/20090408_eabev_(scientific_study).pdf
Belenos : 41%
Course d’école à la STEP….
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