2245-2 Joint ICTP-IAEA Advanced School on the Role of ...indico.ictp.it/event/a10148/session/7/contribution/5/material/0/0.pdfin Hydrogen-Based Energy Systems Marc Steen 13 - 18 June

2245-2

Joint ICTP-IAEA Advanced School on the Role of Nuclear Technology in Hydrogen-Based Energy Systems

Marc Steen

13 - 18 June 2011

European Commission Joint Research Centre Institute for Energy Pettern

Netherlands

[email protected]

EU activities related to H2 economy

[email protected]

1IAEA - ICTP School, Trieste June 2011

http://[email protected]

EU activities related to H2 economy


Hydrogen is needed for deep decarbonisation – EU enabling efforts

Elements of the hydrogen chain• production• storage• transmission and distribution infrastructure

Main end-use interest area: public transport

Research needs in hydrogen and fuel cell technologies

European Union Efforts• Policies• Research, Development and Demonstration (RDD)

• Fuel Cell and Hydrogen Joint Undertaking (FCH-JU)• Joint Research Centre of the European Commission (JRC)

Additional slides

Contents


Recap from 1st presentation

H2 is needed for deep decarbonisation


• far from optimized technologies need to compete with efficient, well functioning energy (and transport) systems

• technological as well as non-technological barriers

Fossil fuels Hydrogen cheap no well working not proven vested interests no regulations existing starting markets small till now consumers familiarity no educational programs limited

H2 versus incumbent technologies








Additional slides

Contents


H2

Power: Water electrolysis from renewable sources and nuclear

Wood: Pyrolysis technologyfor hydrogen from biomass

Coal: With gasification technology H2 may be

produced from coal

Alcohols like ethanol and methanol derived from gas or biomass – are

rich in H2 and may be reformed to H2

Algae: Methods for utilizing the photo-synthesis for H2 production

Oil: H2 is produced with steam reforming or partial oxidation from

fossil or renewable oils

Gas: Natural gas or bio-gas are H2 sources with steam reforming or partial oxidation

Source: Hydro

Hydrogen Production

today, tomorrow with CCS

tomorrow


electricity and hydrogen are complementary energy carriers:electron-based and proton-based

“ hydricity”

H2 from fossil fuels: with CCS


Hydrogen production tomorrow: splitting H2O

nanoscale hydrogen production

Mn

MnMn

Mn

O

OO

O

OO

Mn

Mn

MnMn

O

OO

O

2H2O 4H+ + 4e-

photosystem II

+

-

H2O2

solar electrolysis

• functional integration at the nanoscale

• molecular transfer of energy and charge

• 6-18% efficiency in laboratory

bio-inspired nanoscale assemblies

• inexpensive Mn catalyst• room temperature• “one molecule at a time”

porphyrin nanotube hybrids• porphyrin: harvests light • Pt, Au: catalyst & electrodes assembly splits water in sunlight

source: Crabtree, DoE - BES


Hydrogen storage

Advantages• high gravimetric energy density• implementable from kW to multi-MW• charge rate, discharge rate and storage capacity are independent

variables• potential to supply road transportation• environmentally benign operation characteristics

Disadvantages• low volumetric energy density• costs• low round-trip efficiency


energy storage for intermittent renewable energy sources

Electrolyser

Fuel CellsStorage

from electricity to electricity: low round-trip efficiency –

incremental technology improvements

Hydrogen storage for stationary applications


Source: Crotogino et al. WHEC 2010

long term energy storage

Hydrogen storage for stationary applications


Salt cavern hydrogen storage • proven technology • about 60 times the electricity

equivalent in the same volume as adiabatic compressed air storages

• bulk storage for long-term balancing

stored hydrogen can be • re-electrified with fuel cells and combined cycle gas turbines• used as feedstock in the chemical industry• distributed via pipeline or as liquefied hydrogen to automotive end users

Bulk hydrogen storage


Automotive hydrogen storage options

T. Brunner, StorHy Final Event, 2008


Changing energy landscape

now future

• distributed generation with fully integrated network management

• from consumers to “prosumers”


Source: EHA

Hydrogen transmission and distribution








Additional slides

Contents


Hydrogen for transport = vehicles

Transport (and distribution) of hydrogen

sour

ce: N

atio

nal G

eogr

aphi

c



Source: DoE-SNL

CO2 emission reduction in transport requires carbon-free fuel


0

100

200

300

400

500

600

700

800

900

0 200 400 600 800 1000 1200

Total WTW energy (MJ / 100 km)

WTW

GH

G e

mis

sion

s (g

CO 2

eq /

km

GasolineDiesel fuelC-H2 ex NG, ICEC-H2 ex NG, FCC-H2 ex coal, ICEC-H2 ex coal, FCC-H2 ex wood, ICEC-H2 ex wood, FCC-H2 ex NG+ely, ICEC-H2 ex NG+ely, FCC-H2 ex coal+ely, ICEC-H2 ex coal+ely, FCC-H2 ex wood+ely, ICEC-H2ex wood+ely, FCC-H2 ex nuclear elec, ICEC-H2 ex nuclear elec, FCC-H2 ex wind elec, ICEC-H2 ex wind elec, FCC-H2 ex EU-mix elec, ICEC-H2 ex EU-mix elec, FCL-H2 ex NG, ICEL-H2 ex NG, FCL-H2 ex wood, ICEL-H2 ex wood, FCL-H2 ex EU-mix elec, ICEL-H2 ex EU-mix elec, FCL-H2 ex NG+ely, ICEL-H2 ex NG+ely, FCL-H2 ex coal+ely, ICEL-H2 ex coal+ely, FC

Overall picture: GHG versus total energy (Hydrogen)

most hydrogen pathways are energy-intensiveonly use of NG, RES or nuclear

offers GHG gains

2010+ vehicles

Ref: JEC study


WTW GHG

0 50 100 150 200

Gasoline PISI

Conv. DieselDICI+DPF

CNG (4000 km) PISI

CNG PISI hyb.

C-H2 PISI

C-H2 PISI hyb.

C-H2 FC

C-H2 FC hyb.

g CO2eq / km

TTWWTT

ICE

FC

WTW energy

0 100 200 300 400

Gasoline PISI


CNG (4000 km)PISI

CNG PISI hyb.

C-H2 PISI

C-H2 PISI hyb.

C-H2 FC

C-H2 FC hyb.

MJ / 100 km

TTWWTT

ICE

FC

Hydrogen from NG : ICE and Fuel Cell

For hydrogen produced from NGGHG emissions savings are only achieved with fuel cell vehicles

2010+ vehicles

Ref: JEC study


WTW GHG

0 50 100 150 200 250

Gasoline PISI


CNG (4000 km) PISI

C-H2 PISI

L-H2 PISI

g CO2eq / km

TTWWTT

WTW energy

0 100 200 300 400

Gasoline PISI


CNG (4000km) PISI

C-H2 PISI

L-H2 PISI

MJ / 100 km

TTWWTT

Liquid hydrogen is less energy efficient than compressed hydrogen

Hydrogen from NG : Compressed versus Liquid

2010+ vehicles

Ref: JEC study


Positions of Vehicle Manufacturers


Positions of Vehicle Manufacturers


Letter of Understanding on the Development and Market Introduction of Fuel Cell Vehicles - September 2009

• „Based on current knowledge and subject to a varity of prerequisites and conditions, the signing OEMs strongly anticipate that from 2015 onwards a quite significant number of fuel cell vehicles could be commercialised. This number is aimed at a few hundred thousand units over life cycle on a worldwide basis.“

• „[…] The signing OEMs strongly support the idea of building-up a hydrogen infrastructure in Europe, with Germany as starting point and at the same time developing similar concepts for market penetration of hydrogen infrastructure in other regions of the world, with one US market, Japan and Korea as further starting points.“


Memorandum of UnderstandingSept. 2009

Leading companies agree on build-up plan for hydrogen-infrastructure, flanking expected serial-production of FC-Vehicles starting 2015 Phase I (until 2011):

standardization of hydrogen fuelling stations,

joint business plan for area-wide roll-out in Germany

Phase II: Implementation of respective action plan








Additional slides

Contents


The Two Hydrogen Economies

research need

ener

gy p

ayof

f

fossil fuelreforming

gas/liquidstorage

fuel celloperation

solid statestorage

splitting water

combustion in heat engines

incremental:within reach of

commercial technology

mature: breakthroughs in

basic science/materials

nanoscience bridges the gap

source: Crabtree, DoE-BES


Source: DoE BES


Neutron techniques in support of R&D








Additional slides

Contents


Strategic EU Policy Objectives

By 2020 – the three 20s: 20% reduction in greenhouse gas emissions compared to 1990 levels

(30% if global agreement) 20% reduction in global primary energy use (through energy efficiency) 20% of renewable energy in the EU's overall mix (minimum target for

replacement of 10% of vehicle fuel)

By 2050: > 85% reduction in GHG

comparison basis = 1990


EC regulations on type approval of H2 vehicles

REGULATION (EC) No 79/2009 on Type-approval of hydrogen-powered motor vehicles

REGULATION (EU) No 406/2010 implementing Regulation (EC) No 79/2009

According to the Split Level Approach, it comprises two parts:

The “political” part (outlining the necessity of the proposal, general description, etc) adoption by the European Parliament and the Council.

The “technical” part (containing the application of the pertinent standards to containers and other specific components) discussed at Commission level.

Legislation applicable to hydrogen technologies


• Review of separate type-approval regulations on vehicle safety (crash conditions!)

• extension of the regulation to methane-hydrogen mixture • extension of the regulation to L category vehicles (Suzuki scooter

1st in Europe!)

What remains to be done?

Request by European Parliament for type approval for refuelling stations – still outstanding

Harmonization with the UN-ECE Global Technical Regulation (GTR)


Regulations for transporting H2EU:• transport of gasses under pressure• Transport of dangerous goods by road• Transport of dangerous goods by rail• Transport of dangerous goods by in-land waterways International:• Transport of dangerous goods : UN-ECE• Transport of dangerous goods by air: IATA/ICAO

• Pressure Equipment Directive• SEVESO II (large amounts of hazardous materials)

Regulation for storing H2


Regulation for H2 appliances

CE mark based on compliance with:

• Machinery safety directive• Equipment and protective systems intended for use in potentially explosive

atmosphere (ATEX directives)• Pressure equipment directive• Low voltage directive• Electromagnetic compatibility directive• Simple pressure vessels directive


• R&D activities in Europe are funded at different levels: EU, national and regional.• EU level funding: consecutive framework programmes, currently FP7

• EU dimension and added value• competitive calls for proposals (sollicitations)

for H2 and fuel cells: EU funding as of 2008 through public-private partnership: Fuel Cells and Hydrogen Joint Undertaking (FCH-JU), operating the Joint Technology Initiative:

• 1 B€ for R&D and demonstration (2008-2013)• 50/50% cost share basis between EC and industry

Public R&D on H2&FC in Europe

EU Research Policy: 2 legs• co-funded R&D (“indirect actions”)• own R&D: Joint Research Centre (“ JRC direct actions”)

note: current evolution from R&D to research and

innovation

indirect actions

http://ec.europa.eu/research/fp7/index_en.cfm?pg=cooperation


An industry-led Public-Private Partnership between

• The European Union represented by the Commission

• European Industry Grouping for the Fuel Cells and Hydrogen Joint Technology Initiative (NEW-IG)

• New European Research Grouping on Fuel Cells and Hydrogen (N.ERGHY)

http://ec.europa.eu/research/fch

http://www.fchindustry-jti.eu

http://www.nerghy.eu

to accelerate technology development to achieve market introduction from 2015

Fuel Cell and Hydrogen Joint Undertaking


• The FCH JU has the minimum critical mass needed to develop and validate efficient and cost competitive technologies

• However, meeting the market entry targets set by industry will require substantial additional effort

• The additional public and private funding needed is currently estimated as €5 bn for the period 2013-2020

COM(2009)519: Investing in the Development of Low Carbon Technologies (SET-Plan)

FCH JU and Stategic Energy Technology Plan


Hydrogen and Fuel Cell Research at JRC


JRC activities Hydrogen and Fuel Cells

Pre-normative research as input to international standards and regulations

Execution of reference function in European Fuel Cell and Hydrogen Joint Technology Initiative

Scope:• Fuel cell performance • H2 storage and distribution • H2 sensors• H2 safety

Representation of European Commission in international technical forums and collaboration activities:

IEA, IPHE, EU-US Energy Council Technology Working Group, …

Supported by underpinning research in networking mode


GasTeF

Safety bunker for stationary & cyclic testing facility up to

800 bar

High Pressure H2Storage

SenTeF

Laboratory for sensor testing

On-board safety sensors

2D and 3D CFD codes

dispersion/explosion modelling

Modeling H2 release

H2 Storage, Distribution, Sensing and Safety

refuelling stationspermitting

SolTeF

Laboratory for storage capacity characterisation

Solid-state H2Storage

ISO TC 197EC type approvalUN-ECE WP 29

IEA-HIA, IPHE (ICHS)NREL, JARI, …


Validation and Verification of FC Technologies

Environmental and vibration testing of FC systems and their performance

IEA-AFC, IPHE,DoE, NEDO, KIST, Dahlian Univ., RAS, …

ISO TC 197, IEC TC 105UN-ECE WP 29

tests at level of • MEA• cell• stack


Topic: in-situ neutron diffraction of magnesium amide/lithium hydride stoichiometric mixtures with lithium hydride excess

Issue: improved solid date H2 storage capability JRC work: clarification of reaction mechanisms and identification of new intermediate phase Outcome: significant insight into hydrogen storage capabilities leading to input on tailoring

of promising hydrogen storage materials

Underpinning research (example)


• International Conferences on Hydrogen Safety (2005, 2007, 2009, 2011)• IPHE Conferences on H2 storage - (with US-DoE, Russia) (2005, 2009)• International Workshops

– Fuel Cell Degradation, 2007 (IPHE)– Accelerated Testing in Fuel Cells, 2008 (IPHE)– Diagnostic Tools for Fuel Cells Technologies, 2009 (IPHE)– Effects of Fuel and Air Quality to the Performance of Fuel Cells, 2009 (IPHE,

IEA-AFC, ISO)– Early markets, 2010 (IPHE, IEA-AFC)– Fuel Cell Degradation, 2011 (IPHE, IEA-AFC)

• IAEA-IEA technical meetings on nuclear methods in H2 storage and FC research, 2009-2010-2011

• Hosting of researchers

Dissemination, Education, Training



http://www.jrc.ec.europa.eu/http://ie.jrc.ec.europa.eu/

[email protected]

Thank you for your attention!








Additional slides – in order of main presentation

Contents



Options for high pressure on-board storage




source: IEA Roadmap 2009

0

20

40

60

80

100

120

140

160

180

2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050

Passen

ger LDV

Sales (million)

H2 hybrid fuel cell

Electricity

CNG/LPG

Plug‐in hybrid diesel

Diesel hybrid

Conventional diesel

Plug‐in hybrid gasoline

Hybrid (gasoline)

Conventional gasoline

Light-duty vehicle sales (millions), 2010-50

electric drive train: BEV and FCEV

Decarbonisation of EU transport

+ behavioural change, intermodality


main hydrogen vehicle components

N. Nha, Doe Workshop July 2010, Beijing



Source: DoE BES


Source: DoE BES


Source: DoE BES


Source: DoE BES


FCH JTI Targets


FCH JTI Targets - continued


FCH JU Budget

budget breakdown by Application Area -

total 940M€

http://ec.europa.eu/research/fch/pdf/fch_ju_multi_annual_implement_plan.pdf


Standardisation: Who does what?

• Refuelling stations, H2 components, detectors, fuel quality, … : ISO/TC 197 Hydrogen technologies

• Fuel cell test methods and performance assessmentIEC/TC 105 Fuel cell technologies

• Material compatibility for hydrogen storage: ISO/TC 58 Gas cylinders

• …

Useful information sources:

http://www.fuelcellstandards.com/Hydrogen%20Matrix.pdf, updated 1 May 2011http://hcsp.ansi.org/


Current standardisation priorities

Regulations, codes, and standards

Fueling protocol

Fueling connector

Hydrogen quality

Dispenser testing/

acceptance

Permitting framework

Mass-flow metering

Source: K. Bonhoff, EO seminar, Mar. 2011

Alignment of regulations, codes, and standards to ensure compatibility of any hydrogen refuelling station and fuel cell electric vehicles


Demonstration projects are very important to gain real life experiences

HyFLEET:CUTE will see the operation of 47 Hydrogen powered buses in regular public transport service in 10 cities on three continents.


Hydrogen supply pathways for HyFleet:Cute


…H2 vs. batteries battle for transport applications?


www.fch-ju.eu


to provide customer-driven scientific and technical support for the conception, development, implementation and monitoring of EU policies

The JRC functions as a centre of science and technology (S&T) reference for the EU, independent of commercial and national interests...

JRC Mission:

R&D by JRC is limited in scope by full compliance with the Subsidiarity Principle:• “enabling R&D” activities• targeting EU and public interests

• pre-normative and co-normative research, performance assessment (incl. LCA), …. • scenario-building, road-mapping, SET-Plan Information System, …

• networking within and outside EU absolutely necessary

Joint Research Centre activities and achievements

on hydrogen and fuel cells:

Framework Agreement FCH JU - JRC: provision of reference facilities and programme support


autothermal reformer

up to 100 Nm3/hr H2 peak capacity

hydrogen quality 5.0 (99.999%)

continuous monitoring of impuritiese.g. CO, H2S

Task 23 IEA HIA small scale reformers – harmonisation of efficiency measurements

H2 production


Compressor and tank testing “bunker”: 1 m thick composite walls 3 meters sand 40 tons sliding door 225 m³ interior filled with N2 during tests

N2 liquid storage H2 and CH4

storage

High Pressure Gas Testing Facility


… tightly controlled for reasons of safety…


-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 170

50

100

150

200

250

300

350

Tank pressure Tank bottom temperature

Test duration [h]

Pre

ssur

e [b

ar]

0

5

10

15

20

25

30

Temperature [ oC

]

-1 0 1 2 3 4 5 6 7 8 9 10

0

50

100

150

200

250

300

350

400

Tank Pressure Bottom Temperature Top Temperature

Test Duration [h]

Pre

ssur

e [b

ar]

0

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

Temperature [ oC

]… to enable high-fidelity simulations and tests

Expose tanks and their accessories to temperatures between ambient and 100°C

Provide a maximum filling pressure of 880 bar Perform the filling of the tank under test within 3 minutes Conduct permeation and cycling tests


Fast Filling Validation

• Tank: Type IV (29.8L)• Working Fluid: Hydrogen• Test Conditions:

– Initial Pressure: 1.2 bar– Final Pressure: 722 bar– Filling time: 331s– Initial tank temperature:

18°C


Maximum Temperature

0

10

20

30

40

50

60

70

80

90

100

TC1

TC2

TC3

TC4

TC5

TC6

TC7

TCEX

T1TC

EXT2

TCEX

T3

TCs Position

T [C

]

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

err [

%

expcalcerr

T1

T2

T3

TC1TC2

TC3TC4

TC5

TC6 TC7

Temperature (error) versus sensor position

Position of the sensors in the tank. T1, T2 and T3 are placed

externally

Fast Filling Validation


Temperatures during filling

(100s)

Temperatures 120 s after end of filling (180 s)

Measure the temperature profile inside a H2/CH4 tank during filling to validate the software models, which are used to predict maximum temperatures inside the tanks


Introduce a system into the bunker to cool down H2 when it is supplied to the tank Upgrade the environmental control system to provide very low ambient

temperatures to simulate harsh environmental conditions of -40°C (or lower)


Facilities for sorption characterisation:1. volumetric equipments 2. gravimetric equipment(s)3. spectroscopy (Temperature Programmed

Desorption)

Micro-structural characterisation:• FEG-SEM, EPMA, TEM, XRD • Positron Annihilation Spectroscopy• SANS

solid state H2 storage


• organisation, participation, evaluation of first-ever global interlaboratory exercise on H2 solid state storage – meanwhile 3 held

• continuous improvement of gravimetric measuring equipment

Adsorption Isotherm at 77K

9 partners

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 150.0

0.5

1.0

1.5

2.0

2.5

H up

take

(wt%

)

Pressure (MPa)

DALIKLEEMAGRITTEKLIMTVAN GOGHMIRO MATISSEPICASSOKANDINSKY

0 1 2 3 4 5 6 7 8 90.0

0.2

0.4

0.6

0.8

1.0

Stan

dard

dev

iatio

n Pressure (MPa)

solid state H2 storage



H2 safety studies

• simulations of fast filling procedure in hydrogen tanks

• gap analysis report on CFD simulations provided to FCH-JU

Environment Release Dispersion

Explosions

Refuelling station X Garage X Tunnels X X Pipeline X Urban street X Laboratory X

• numerical simulations


Numerical analysis (3D CFD) of accidental hydrogen release in SolTeF laboratory

HH

VinVout

Vouts

IVRRIG

1 2

• assumption of release scenarios based on Failure Mode and Effect Analysis (FMEA)• modeling of real laboratory taking into account geometry, main obstacles, ventilation

and air extraction characteristics• calculation of hydrogen concentrations during and after release • feedback to safety design, such as on optimal positioning of safety sensors

Leak position


Iso-surface of hydrogen concentration at the lower flammability limit (4% of H2 in air)

Results for the case of a guillotine break of a high pressure line in absence of mitigation measures (case beyond Max Credible Accident)

Main conclusions: • despite the fact the hydrogen sensor detectors are placed on top of every equipment, the first detector

which would give alarm is placed on the opposite wall. • hydrogen concentrations for a short time above LFL, but mass involved not enough to sustain a flame

H2 concentrations at on the axis of release at 4 seconds from break


objective: to establish testing procedures for H2 safety sensor performance (lifetime, sensitivity, accuracy, reaction time, X-sensitivity,..) under real service life conditions

hydrogen safety sensors (on-board vehicle)

Electrochemical sensors


Catalytic Sensor (11/16)

01234MR

Acc

Sen

CST

RH

P

from individual parameter effect to performance evaluation: quantitative radar diagrams

Electrochemical Sensor (8/10)

01234MR

Acc

Sen

CST

RH

P

MOS Sensor (6/11)

01

23

4MR

Acc

Sen

CST

RH

P

TC Sensor (2/3)

0123

4MR

Acc

Sen

CST

RH

P

MR – measuring rangeAcc – accuracySen – sensitivityCS – cross sensitivityT - temperatureRH - relative humidityP - pressure

Performance of hydrogen safety sensors


JRC/NREL round robin testing of H2 safety sensors

interlaboratory test programme to evaluate influence of environmental conditions (temperature, pressure, …) on sensor response

0.7 0.8 0.9 1.0 1.1 1.2 1.30.4

0.6

0.8

1.0

1.2

1.4 NREL JRC ISO tolerance

Sens

or re

spon

se /

vol%

H2

Pressure / bar-30 -20 -10 0 10 20 30 40 50

0.4

0.6

0.8

1.0

1.2

1.4 NREL JRC ISO tolerance

Sens

or re

spon

se /

vol%

H2

Temperature / °C


0100200300400500600700800900

1000

0,0 0,5 1,0

Time, hrs

Stac

k cu

rren

t den

sity

, m

A/cm

2

0

1

2

3

4

5

6

7

8

9

10

11

12

Stac

k po

wer

, kW

Powe

r Up

Power down

0100200300400500600700800900

1000

0,0 0,5 1,0

Time, hrs

Stac

k cu

rren

t den

sity

, m

A/cm

2

0

1

2

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4

5

6

7

8

9

10

11

12

Stac

k po

wer

, kW

Powe

r Up

Powe

r Up

Power down

Power down

Obtained by increasing the current -“Power up”-

55

60

65

70

75

80

85

90

0,0 200,0 400,0 600,0 800,0 1000,0

Stack current density, mA/cm2

Sta

ck v

olta

ge, V

Obtained by decreasing the current -“Power down”-

0

2000

4000

6000

8000

10000

12000

14000

0,0 200,0 400,0 600,0 800,0 1000,Stack current density, mA/cm2

Stac

k Po

wer

W

Obtained by increasing the current -“Power up”-

55

60

65

70

75

80

85

90

0,0 200,0 400,0 600,0 800,0 1000,0


Sta

ck v

olta

ge, V


0

2000

4000

6000

8000

10000

12000

14000


Stac

k Po

wer

W

55

60

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0,0 200,0 400,0 600,0 800,0 1000,0


Sta

ck v

olta

ge, V


55

60

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90

0,0 200,0 400,0 600,0 800,0 1000,0


Sta

ck v

olta

ge, V


0

2000

4000

6000

8000

10000

12000

14000


Stac

k Po

wer

W

PNR for FC polarisation curves


1 2 3 4 5 6 7 8 9 10 11 120

5

10

15

Frac

tion

/ %

Diameter / nm

Topic: mechanistic understanding of the processes occurring at the atomic level within PEM fuel cells

Issue: development of novel low cost and more CO tolerant nanocatalysts based on fundamental understanding of the processes involved

JRC work: kinetic studies of CO de-sorption on PtRu/C PEMFC anodes: temperature dependence and microstructural transformations

Outcome: significant insight into CO tolerance, which will likely change strategies applied for development of novel low cost and CO tolerant nanocatalysts

carbon-supported catalyst nanoparticlescatalyst characterisation laboratory

Carbon supportCatalyst nanoparticles

Size distribution of the catalyst nanoparticles

Underpinning research


0

1E-10

2E-10

0 200 400 600 800 1000Time (s)

25°C50°C100°C150°C

First measurement of temperature dependent CO de-sorption kinetic data on PtRu/C PEMFC anodes and assessment of the effect of thermal treatment

Improved insight into CO tolerance mechanisms expected to lead tobetter definition of fuel quality standards

Underpinning research

Documents

2245-2 Joint ICTP-IAEA Advanced School on the Role of ...indico.ictp.it/event/a10148/session/7/contribution/5/material/0/0.pdfin Hydrogen-Based Energy Systems Marc Steen 13 - 18 June