HYDROGEN-CHLORINE PEM REVERSIBLE FUEL CELL ENERGY STORAGE SYSTEM

INTRODUCTION

Looking for…

Providing new ways to generate

green energy

Enhancingeconomicefficiency

ReducingCO2

emissions

Reducingwaste

Improvingstorage

efficiency

…new energy storage devices!

Proposal

- To develop a reversible Hydrogen-Chlorine PEM Fuel Cell

Use of hydrogen to produce electric power has seemed as a very promising option for a long time [1], although storage procedure is still a

big problem [2].

METHODOLOGY RESULTS

Electrolysis ModeFuel Cell Mode

Financial support from the Spanish Ministry of Economy, Industry and Competitiveness and European Union through project CTQ2017-91190-EXP (AEI/FEDER, UE) is gratefully acknowledged

ACKNOWLEDGEMENTS

CONCLUSIONS REFERENCES

Same electrochemical cell

Same electrodes

NaCl H2O Cl2 H2

Cl2 H2 HCl

Assembling the cell

Reversible chloralkaline cell operating successfully in both modes.

ELECTROLYSIS FUEL CELL

[1] C.A. Grimes, O.K. Varghese, S. Ranjan. Light, water, hydrogen: The solar generation of hydrogen bywater photoelectrolysis, (2008).

[2] M. S. Thomassen, B. Børresen, G. Hagen, R. Tunold. H2/Cl2 fuel cell for cogeneration of electricity andHCl, Journal of Applied Electrochemistry, 33 (2003), 9-13.

[3] L.M. Da Silva, G. M. De Oliveira, M. De Salles, K.I.B. Eguiluz, G.R. Salazar-Banda. Influence of heatingrate on the physical and electrochemical properties of mixed metal oxides anodes synthesized by thermaldecomposition method applying an ionic liquid, Journal of Electroanalytical Chemistry, 813 (2018), 127-133.

M. Carvela, J. Lobato, C.M. Fernández, M.A. Rodrigo

Department of Chemical Engineering. University of Castilla-La Mancha. Enrique Costa building, Ciudad Real

XIV Young Science Symposium8-10 July 2020 Ciudad Real, Spain

-

+

Chlor-alkali electrolysis

NaOH

Air+CO2

Na2CO3

H2O

Crystallization

Cl2

PEM Fuel Cell

-

+

H2

Air

AIMS

- To produce and store energy

-

+

MMO electrodes synthesis [3]

2 cm

1 c

m

Experimental set-up

0

200

400

600

800

1000

0 20 40 60 80 100 120

Co

unts

/ a.

u.

2ϴ / deg.

Before

After

RuO2

Pt

TiO2

LOADING. . .

0

20

40

60

80

100

1 3 4 9

Hy

dro

gen

pro

du

ctio

n(%

)

Ru / Pt

Current efficiency based on hydrogenproduction during the electrolysis tests

Ru20Ti60Pt20Ru30Ti60Pt10Ru40Ti50Pt10Ru45Ti50Pt5

7.4 V 100 mA cm-2

0

0.1

0.2

0.3

0.4

0.5

0.6

0 2 4 6 8 10Eff

icie

ncy

/ W

hm

ol-1

H2

Ru / Pt

Ru20Ti60Pt20Ru30Ti60Pt10Ru40Ti50Pt10

Ru45Ti50Pt5

Influence of the cathodic Ru/Pt ratio onthe efficiency

Membrane

Electrode

Assembly

MembraneSilicon

gasketSilicon

gasket

Cathodic

compartment

Cathode

Anodic

compartment

Anode

Cathodic

compartment

Anodic

compartment

Silicon

gasketSilicon

gasket

Green energy has been produced by applying electrical energy to the cell from solar panels.

0

100

200

300

400

500

600

700

800

0 2 4 6 8 10 12

j /

mA

cm

-2

Time / h

0

4

8

12

16

20

0 2 4 6 8 10 12

r H2 /

mM

ol

h-1

Time / h

5%

25%65%

85%Current density behavior of the cell during theelectrolysis test using solar panel. Production ofhydrogen.