Dr Qiong Cai

1

Senior Lecturer in Chemical and Process Engineering, University of Surrey

SPEAKER

Electrode materials for anion exchange membrane fuel cells and electrolysers

Session 1 - Advances in fuel cells and electrolysers

Dr Qiong Cai, Senior Lecturer in Chemical and Process Engineering, University of Surrey

Personal webpage: https://www.surrey.ac.uk/people/qiong-cai

q.cai@surrey.ac.uk; QiongCai_EnM3

Wednesday 14 July 2021

Those who have supported and inspired my research

Hybrid fuel cell/battery power system

3D electrode design for solid oxide fuel cells

and electrolysers

Electrocatalysts for anion exchange membrane (AEM) fuel cells

703 mW cm-2

Lu et al.,

Journal of Power

Sources 2017,

372, 82-90.

Prof Nigel Brandon Prof Claire Adjiman

2007 – 2012

Prof John Varcoe Prof Magda Titirici Prof Anthony Kucernak

2013 - 2014 - 2016 -

Polymer electrolyte fuel cells and electrolysers

AEM fuel cells and electrolysers: Current performances

Nature Communications 2020, 11, 3561.

❖ Peak power density of 2.35 W/cm2 under

H2/O2 based on the Surrey AEM at 65 oC,

with 20% Ru/C at anode and 40% Pt/C at

cathode (Nature Communications 2020,

11, 3561)

❖ 2000 h Stability at 0.6 A/cm2 under H2/O2

based on optimized ionomer at 75 oC, with

60% PtRu/C at anode and 40% Pt/C at cathode (Adv. Energy Mater. 2020, 2001986)

AEM Fuel Cells Performance

❖ Current density 2.0 A/cm2 at 1.82 V at 60 oC, with 60% Pt/C and Ir black (J. Power

Sources 2020, 451, 227814)

❖ Current density 1.0 A/cm2 at 1.57 V at 80 oC, with NiMo and Fe-NiMo (Adv. Energy Mater. 2020, 2002285)

❖ 10,000 h at 1.0 A/cm2 and 1.85 V at 60 oC, with NiFe2O4 and Raney Ni (Int. J. Hydrogen Energy 2021, 46, 3379)

AEM Electrolyser Performance

Electrocatalysts: Non-precious-metal materials Hydrogen Oxidation/Evolution Reaction (HOR/HER): 2H2+4OH- 4H2O + 4e-

Oxygen Reduction/Evolution Reaction (ORR/OER): O2+2H2O + 4e- 4OH-

J. Alloys and Compounds 2020, 846, 156396

ORR: ẟ-MnO2 nanowires on carbon ORR and OER: Single atom catalysts on carbon nano fibres

Nano Energy 2021, 87, 106147

HER: Ni0.85Se/MoS2 nanosheets

Int. J. Hydrogen Energy 2019, 44, 26109

Ni0.85Se/MoS2

Electrode architecture design- Using an in-house 3D pore-scale lattice Boltzmann model

Nature Communications 2020, 11, 3561.

Air/ O2 gas inlet

Water generated

Zhang et al., Electrochimica Acta 2018, 262, 282.

Dr Qiong Cai

Department of Chemical and Process Engineering University of Surrey

Personal webpage: https://www.surrey.ac.uk/people/qiong-cai

q.cai@surrey.ac.uk; QiongCai_EnM3

Funding Bodies

My Group at The University of Surrey

Postdocs under my primary supervisionDr Emilia Olsson (Research Fellow, Surrey)

Dr Duo Zhang (Research Fellow, Surrey)

Dr Lefteri Andritsos (Data Science Fellow, Private Company)

Dr Yaxiang Lu (Associate Prof, Institute of Physics, CAS)

Dr Maggie Svensson (Lab Manager, Smart Filtration Solutions)Dr Argyrios Karatrantos (Scientist PI, Luxemburg Institute of Science and Technology)

PhD students under my primary supervisionTianhao Yu Tengfei HeJuyan Zhang Yiming JiangYameng Fan Ning MaoPaweenuch Teerasumran Ruizhi ZhangJu’an Huang Tianfeng GaoUtsab Guharoy (graduated) Mattia Turchi (graduated)