Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Arvo Kikas"'
Autor:
Jaana Lilloja, Oluwaseun E. Fetuga, Elo Kibena‐Põldsepp, Arvo Kikas, Maike Käärik, Jaan Aruväli, Jekaterina Kozlova, Alexey Treshchalov, Vambola Kisand, Jaan Leis, Kaupo Kukli, Kaido Tammeveski
Publikováno v:
ChemElectroChem, Vol 11, Iss 19, Pp n/a-n/a (2024)
Abstract In this work, iron‐ and nitrogen‐doped carbide‐derived carbon and carbon nanotube (CDC/CNT) composites are prepared and used as oxygen reduction reaction (ORR) electrocatalysts in acidic conditions. Three different approaches are taken
Externí odkaz:
https://doaj.org/article/18271e25dc6643ebacde5713e0bd655e
Autor:
Madis Lüsi, Heiki Erikson, Maike Käärik, Helle-Mai Piirsoo, Jaan Aruväli, Arvo Kikas, Vambola Kisand, Jaan Leis, Kaupo Kukli, Kaido Tammeveski
Publikováno v:
Nanomaterials, Vol 14, Iss 12, p 994 (2024)
We explored two methods for synthesizing Pd nanoparticles using three different carbide-derived carbon (CDC) support materials, one of which was nitrogen-doped. These materials were studied for oxygen reduction reaction (ORR) in 0.1 M KOH solution, a
Externí odkaz:
https://doaj.org/article/9a920a06b51b4754a92c19de56bc242d
Autor:
Yogesh Kumar, Elo Kibena-Põldsepp, Srinu Akula, Jekaterina Kozlova, Arvo Kikas, Jaan Aruväli, Vambola Kisand, Kaupo Kukli, Kaido Tammeveski
Publikováno v:
Electrochemistry Communications, Vol 157, Iss , Pp 107623- (2023)
The focus in the development of catalysts doped with transition metals aims to replace platinum group metal catalysts in fuel cells. However, these non-precious metal catalysts exhibit limited performance in acidic environment for the oxygen reductio
Externí odkaz:
https://doaj.org/article/45759659aa424913ba0d0c7a927c13ed
Autor:
Sanni M. A. Färkkilä, Monika Mortimer, Raivo Jaaniso, Anne Kahru, Valter Kiisk, Arvo Kikas, Jekaterina Kozlova, Imbi Kurvet, Uno Mäeorg, Maarja Otsus, Kaja Kasemets
Publikováno v:
Nanomaterials, Vol 14, Iss 1, p 10 (2023)
Plant resource sharing mediated by mycorrhizal fungi has been a subject of recent debate, largely owing to the limitations of previously used isotopic tracking methods. Although CdSe/ZnS quantum dots (QDs) have been successfully used for in situ trac
Externí odkaz:
https://doaj.org/article/809ad0221e344f0497056b9755a61a13
Autor:
Yogesh Kumar, Srinu Akula, Elo Kibena-Põldsepp, Maike Käärik, Jekaterina Kozlova, Arvo Kikas, Jaan Aruväli, Vambola Kisand, Jaan Leis, Aile Tamm, Kaido Tammeveski
Publikováno v:
Materials, Vol 16, Iss 14, p 5105 (2023)
Rechargeable zinc-air batteries (RZAB) have gained significant attention as potential energy storage devices due to their high energy density, cost-effectiveness, and to the fact that they are environmentally safe. However, the practical implementati
Externí odkaz:
https://doaj.org/article/881d0a1ee40341d89e0fde1b1011eab8
Autor:
Kaur Muuli, Rohit Kumar, Marek Mooste, Viktoria Gudkova, Alexey Treshchalov, Helle-Mai Piirsoo, Arvo Kikas, Jaan Aruväli, Vambola Kisand, Aile Tamm, Andres Krumme, Prabu Moni, Michaela Wilhelm, Kaido Tammeveski
Publikováno v:
Materials, Vol 16, Iss 13, p 4626 (2023)
The goal of achieving the large-scale production of zero-emission vehicles by 2035 will create high expectations for electric vehicle (EV) development and availability. Currently, a major problem is the lack of suitable batteries and battery material
Externí odkaz:
https://doaj.org/article/7996691851e746549c04d5f9dd9e6fca
Autor:
Jaana Lilloja, Marek Mooste, Elo Kibena-Põldsepp, Ave Sarapuu, Barr Zulevi, Arvo Kikas, Helle-Mai Piirsoo, Aile Tamm, Vambola Kisand, Steven Holdcroft, Alexey Serov, Kaido Tammeveski
Publikováno v:
Journal of Power Sources Advances, Vol 8, Iss , Pp 100052- (2021)
A novel and commercially available electrocatalyst is characterised and used as cathode catalyst in an anion-exchange membrane fuel cell (AEMFC). The catalyst material is prepared using VariPore™ method by Pajarito Powder, LLC, and as dopants iron
Externí odkaz:
https://doaj.org/article/dbf3de315d05491ea2b1ba7559144889
Autor:
Iris Palm, Elo Kibena-Põldsepp, Uno Mäeorg, Jekaterina Kozlova, Maike Käärik, Arvo Kikas, Jaan Leis, Vambola Kisand, Aile Tamm, Kaido Tammeveski
Publikováno v:
Electrochemistry Communications, Vol 125, Iss , Pp 106976- (2021)
In this study, two compounds (melamine phosphate and hexachlorocyclotriphosphazene) were used as nitrogen and phosphorus precursors to dope silicon carbide-derived carbon (SiCDC) with nitrogen and phosphorus moieties. The successful heteroatom doping
Externí odkaz:
https://doaj.org/article/9d57cf7fdebd405da2c473e035a2db04
Autor:
Kaarel Kisand, Ave Sarapuu, Arvo Kikas, Vambola Kisand, Mihkel Rähn, Alexey Treshchalov, Maike Käärik, Helle-Mai Piirsoo, Jaan Aruväli, Päärn Paiste, Jaan Leis, Väino Sammelselg, Aile Tamm, Kaido Tammeveski
Publikováno v:
Electrochemistry Communications, Vol 124, Iss , Pp 106932- (2021)
High-performance bi- and trimetallic nitrogen-doped nanocarbon catalysts for the electrochemical oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) were prepared by high-temperature pyrolysis from 5-methylresorcinol, dicyandiamide an
Externí odkaz:
https://doaj.org/article/8902425525cc4033a9868658c643b372
Autor:
Roberta Sibul, Elo Kibena-Põldsepp, Uno Mäeorg, Maido Merisalu, Arvo Kikas, Vambola Kisand, Alexey Treshchalov, Väino Sammelselg, Kaido Tammeveski
Publikováno v:
Electrochemistry Communications, Vol 109, Iss , Pp - (2019)
It is highly desirable to synthesise heteroatom-doped carbon-based materials in an environmentally friendly and simple way, which possess good electrocatalytic activity towards the oxygen reduction reaction (ORR). Therefore, in this study, we focused
Externí odkaz:
https://doaj.org/article/d043e90b7a534ad29f592316df36e966