Sander Ratso „Electrocatalysis of oxygen reduction on non-precious metal catalysts” | Faculty of Science and Technology, University of Tartu

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Contacts of UT units

Faculty of Arts and Humanities
Faculty phone: 
+372 737 5341
Faculty address: 
Jakobi 2, rooms 116–121, 51005 Tartu
  • Dean's Office
    Faculty phone: 
    + 372 737 5341
    Faculty address: 
    Jakobi 2, rooms 116–121, 51005 Tartu
  • Institute of History and Archaeology
    Faculty phone: 
    +372 737 5651
    Faculty address: 
    Jakobi 2, 51005 Tartu
  • Institute of Estonian and General Linguistics
    Faculty phone: 
    +372 737 5221
    Faculty address: 
    Jakobi 2, 51005 Tartu
  • Institute of Philosophy and Semiotics
    Faculty phone: 
    +372 737 5314
    Faculty address: 
    Jakobi 2, rooms 309–352, 51005 Tartu
  • Institute of Cultural Research
    Faculty phone: 
    (+372) 737 5223
    Faculty address: 
    Ülikooli 16, 51003 Tartu
  • School of Theology and Religious Studies
    Faculty phone: 
    +372 737 5301
    Faculty address: 
    Ülikooli 18–310, 50090 Tartu
  • College of Foreign Languages and Cultures
    Faculty address: 
    J. Liivi 4, 50409, Tartu
  • Viljandi Culture Academy
    Faculty phone: 
    +372 435 5232
    Faculty address: 
    Posti 1, 71004 Viljandi
Faculty of Social Sciences
Faculty phone: 
+372 737 5957
Faculty address: 
Lossi 36, 51003 Tartu
  • Dean's Office
    Faculty phone: 
    + 372 737 5900
    Faculty address: 
    Lossi 36, 51003 Tartu
  • Institute of Education
    Faculty phone: 
    +372 737 6440
    Faculty address: 
    Salme 1a–29, 50103 Tartu
  • Johan Skytte Institute of Political Studies
    Faculty phone: 
    +372 737 5582
    Faculty address: 
    Lossi 36–301, 51003 Tartu
  • School of Economics and Business Administration
    Faculty phone: 
    +372 737 6310
    Faculty address: 
    Narva mnt 18, 51009 Tartu
  • Institute of Psychology
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    Näituse 2, 50409 Tartu
  • School of Law
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  • Institute of Social Studies
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  • Narva College
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  • Pärnu College
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Faculty of Medicine
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+372 737 5326
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Ravila 19, 50411 Tartu
  • Dean's Office
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    +372 737 5326
    Faculty address: 
    Ravila 19, 50411 Tartu
  • Institute of Biomedicine and Translational Medicine
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    Biomeedikum, Ravila 19, 50411 Tartu
  • Institute of Pharmacy
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  • Institute of Dentistry
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  • Institute of Clinical Medicine
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  • Institute of Family Medicine and Public Health
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    Faculty address: 
    Ravila 19, 50411 Tartu
  • Institute of Sport Sciences and Physiotherapy
    Faculty phone: 
    +372 737 5360
    Faculty address: 
    Jakobi 5–205, 51005 Tartu
Faculty of Science and Technology
Faculty phone: 
+372 737 5820
Faculty address: 
Vanemuise 46–208, 51014 Tartu
  • Dean's Office
    Faculty phone: 
    +372 737 5820
    Faculty address: 
    Vanemuise 46–208, 51003 Tartu
  • Institute of Computer Science
    Faculty phone: 
    +372 737 5445
    Faculty address: 
    Narva mnt 18, 51009 Tartu
  • Estonian Marine Institute
    Faculty phone: 
    +372 671 8902
    Faculty address: 
    Mäealuse 14, 12618 Tallinn
  • Institute of Physics
    Faculty address: 
    W. Ostwaldi 1, 50411 Tartu
  • Institute of Chemistry
    Faculty phone: 
    +372 737 5261
    Faculty address: 
    Ravila 14a, 50411 Tartu
  • Institute of Genomics
    Faculty phone: 
    +372 737 4000
    Faculty address: 
    Riia 23b, 51010 Tartu
  • Institute of Mathematics and Statistics
    Faculty phone: 
    +372 737 5860
    Faculty address: 
    Narva mnt 18, 51009 Tartu
  • Institute of Molecular and Cell Biology
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    +372 737 5027
    Faculty address: 
    Riia 23, 23b–134, 51010 Tartu
  • Tartu Observatory
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    Faculty address: 
    Observatooriumi 1, Tõravere, 61602 Tartumaa
  • Institute of Technology
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    +372 737 4800
    Faculty address: 
    Nooruse 1, 50411 Tartu
  • Institute of Ecology and Earth Sciences
    Faculty phone: 
    +372 737 5835
    Faculty address: 
    Vanemuise 46, 51003 Tartu
Institutions
  • Library
    Faculty phone: 
    +372 737 5702
    Faculty address: 
    W. Struve 1, 50091 Tartu
  • Youth Academy
    Faculty phone: 
    +372 737 5581
    Faculty address: 
    Uppsala 10, 51003 Tartu
  • Museum
    Faculty phone: 
    +372 737 5674
    Faculty address: 
    Lossi 25, 51003 Tartu
  • University of Tartu Natural History Museum and Botanical Garden
    Faculty phone: 
    +372 737 6076
    Faculty address: 
    Vanemuise 46, 51003 Tartu
Support Units
  • Administrative Office
    Faculty phone: 
    +372 737 5606
    Faculty address: 
    Ülikooli 18a, 51005 Tartu
  • Centre for Entrepreneurship and Innovation
    Faculty phone: 
    +372 737 4809
    Faculty address: 
    Narva mnt 18, 51009, Tartu
  • University Office in Tallinn
    Faculty phone: 
    +372 737 6600
    Faculty address: 
    Teatri väljak 3, 10143 Tallinn
  • Estates Office
    Faculty phone: 
    +372 737 5137
    Faculty address: 
    Ülikooli 18a, 51005 Tartu
  • Finance Office
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    +372 737 5125
    Faculty address: 
    Jakobi 4, 51005 Tartu
  • Grant Office
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    +372 737 6215
    Faculty address: 
    Raekoja plats 9, 51004 Tartu
  • Information Technology Office
    Faculty phone: 
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    Faculty address: 
    Ülikooli 18a, 51005 Tartu
  • Human Resources Office
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    Faculty address: 
    Ülikooli 18, rooms 302 and 304, 50090 Tartu
  • Internal Audit Office
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    Ülikooli 18-244, 51005 Tartu
  • International Cooperation and Protocol Office
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    Faculty address: 
    Ülikooli 18, rooms 104, 301, 305, 50090 Tartu
  • Marketing and Communication Office
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    +372 737 5687
    Faculty address: 
    Ülikooli 18, rooms 102, 104, 209, 210, 50090 Tartu
  • Office of Academic Affairs
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    +372 737 5620
    Faculty address: 
    Ülikooli 18, 50090 Tartu
  • Procurement Office
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    +372 737 6632
    Faculty address: 
    Ülikooli 18a, 51005 Tartu
  • Rector's Strategy Office
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    +372 737 5600
    Faculty address: 
    Ülikooli 18, 50090 Tartu
  • Student Council
    Faculty address: 
    Ülikooli 18b, 51005 Tartu
  • University of Tartu Press
    Faculty phone: 
    +372 737 5945
    Faculty address: 
    W. Struve 1, 50091 Tartu
Other Units
  • University of Tartu Academic Sports Club
    Faculty phone: 
    +372 737 5371
    Faculty address: 
    Ujula 4, 51008 Tartu
  • Tartu Student Village
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    +372 740 9959
    Faculty address: 
    Narva mnt 25, 51013 Tartu
  • Tartu Students’ Club
    Faculty phone: 
    +372 730 2400
    Faculty address: 
    Kalevi 24, 51010 Tartu
  • Tartu University Hospital
    Faculty address: 
    L. Puusepa 1a, 50406 Tartu
  • University of Tartu Foundation
    Faculty phone: 
    +372 737 5852
    Faculty address: 
    Ülikooli 18, 50090 Tartu
  • View all other units

Sander Ratso „Electrocatalysis of oxygen reduction on non-precious metal catalysts”

Date: 
14.01.2021 - 14:15

14. January 2021 at 2.15 p.m., Ravila 14A-1020 and in Microsoft Teams Sander Ratso will defend his thesis „Electrocatalysis of oxygen reduction on non-precious metal catalysts” for obtaining the degree of Doctor of Philosophy (Chemistry).

Supervisors:        

Kaido Tammeveski (PhD), UT Institute of Chemistry
Ivar Kruusenberg (PhD), National Institute of Chemical Physics and Biophysics

Oponent:

Juan Herranz (PhD), Paul Scherrer Institute, Switzerland

Summary

Moving on from the carbon energy cycle that is destroying our environment and deteriorating living conditions is one of the priorities for humanity in the 21st century. However, nearly all of the energy used for transportation is still being produced by burning fossil fuels. Polymer electrolyte fuel cells (PEFC) have emerged as one of the pathways towards reducing the CO2 emissions from automotive applications and have already seen wide-scale use in fuel cell electric vehicles. The main remaining problems towards replacement of internal combustion engines by PEFCs are cost and durability. These issues stem from the slow oxygen reduction reaction (ORR), which takes place at the fuel cell cathode. So far, nearly all commercially available fuel cell systems have used platinum-based catalysts on the cathode to achieve this, but it has become apparent that the long-term activity and stability targets cannot be met by Pt-based materials while keeping costs low enough. This PhD thesis focuses on developing novel electrocatalysts for this reaction by rationally designing synthesis strategies for carbon nanomaterials. By using graphene, carbon nanotubes and carbide-derived carbon (CDC) and combining them with methods such as ball-milling and pyrolysis, new catalysts with atomically dispersed catalytic centres were developed. The dispersion of catalytic sites on such a level enhanced the activity of the catalyst material and thereby the power output of the fuel cell. Composite materials from carbon nanotubes and graphene or CDC were created to optimise the porous structure of the fuel cell electrode, which further raised the power density of the cell. New strategies for the optimisation of porosity in catalyst materials are also proposed in this thesis. In the end, multiple catalysts rivalling the activity of commercially used Pt/C materials are presented in this thesis, showing a great promise of non-precious metal catalysts for replacing Pt in automotive fuel cells.

Contact name: 
Heili Kasuk
Contact e-mail: 
heili.kasuk@ut.ee
Location: 
Ravila 14A-1020 and via video bridge
Event category: