Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Meelis Härmas"'
Autor:
Egert Möller, Rasmus Palm, Kenneth Tuul, Meelis Härmas, Miriam Koppel, Jaan Aruväli, Marian Külaviir, Enn Lust
Publikováno v:
Nanomaterials, Vol 13, Iss 21, p 2883 (2023)
Highly microporous adsorbents have been under considerable scrutiny for efficient adsorptive storage of H2. Of specific interest are sustainable, chemically activated, microporous carbon adsorbents, especially from renewable and organic precursor mat
Externí odkaz:
https://doaj.org/article/f7d4ecb2484d45449252394a95c31d4e
Autor:
Rutha Jäger, Patrick Teppor, Maarja Paalo, Meelis Härmas, Anu Adamson, Olga Volobujeva, Eneli Härk, Zdravko Kochovski, Tavo Romann, Riinu Härmas, Jaan Aruväli, Arvo Kikas, Enn Lust
Publikováno v:
Catalysts, Vol 11, Iss 6, p 715 (2021)
In this study, several peat-derived carbons (PDC) were synthesized using various carbonization protocols. It was found that depending on the carbonization method, carbons with very different surface morphologies, elemental compositions, porosities, a
Externí odkaz:
https://doaj.org/article/4fdf3147da9442e2823ad9547e7b3de0
Publikováno v:
Batteries, Vol 5, Iss 3, p 56 (2019)
Cost-effective methods need to be developed to lower the price of Na-ion battery (NIB) materials. This paper reports a proof-of-concept study of using a novel approach to the glycine-nitrate process (GNP) to synthesize sodium vanadium phosphate (Na3V
Externí odkaz:
https://doaj.org/article/4e04fd35b14e4644af9ef69b323026b8
Autor:
Sander Simson, Jaak Nerut, Meelis Härmas, Peeter Valk, Patrick Teppor, Rasmus Palm, Miriam Koppel, Jaan Aruväli, Ove Korjus, Olga Volobujeva, Martin Månsson, Enn Lust
Publikováno v:
ECS Transactions. 111:93-103
In this study, carbon support material, derived from coffee grounds was used in the preparation of Pt catalysts for polymer electrolyte membrane fuel cell (PEMFC) application. The carbon material was synthesized using ZnCl2 activated pyrolysis method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e159f94f24fc5e8dbd92932524f20e28
https://doi.org/10.1149/11105.0093ecst
https://doi.org/10.1149/11105.0093ecst
Publikováno v:
International Journal of Materials Research. 114:1-6
The widespread presence of sodium in the earth’s crust, the significant stability of its compounds and its great ecological recycling possibilities are all factors that lead researchers to new structures exhibiting ion migration of sodium and high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d51514ce14ccba35b2a10d43ff185cbe
https://doi.org/10.1515/ijmr-2022-0243
https://doi.org/10.1515/ijmr-2022-0243
Autor:
Huy Quí Vinh Nguyen, Jaak Nerut, Heili Kasuk, Meelis Härmas, Peeter Valk, Tavo Romann, Miriam Koppel, Patrick Teppor, Jaan Aruväli, Ove Korjus, Olga Volobujeva, Enn Lust
Publikováno v:
Journal of Solid State Electrochemistry. 27:313-326
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c55fec9c0c39ffed891760d5855e362
https://doi.org/10.1007/s10008-022-05326-4
https://doi.org/10.1007/s10008-022-05326-4
Autor:
Patrick Teppor, Rutha Jäger, Maarja Paalo, Anu Adamson, Meelis Härmas, Olga Volobujeva, Jaan Aruväli, Rasmus Palm, Enn Lust
Publikováno v:
International Journal of Hydrogen Energy. 47:16908-16920
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a39343e6ecb34ce5198b12805bc9b23b
https://doi.org/10.1016/j.ijhydene.2022.03.199
https://doi.org/10.1016/j.ijhydene.2022.03.199
Autor:
Riinu Härmas, Rasmus Palm, Tavo Romann, Maarja Paalo, Meelis Härmas, Miriam Koppel, Enn Lust, Thomas Thomberg, Alar Jänes, Indrek Tallo
Publikováno v:
Journal of Applied Electrochemistry. 50:15-32
Different micro–mesoporous carbons derived from d-glucose (GDC), granulated white sugar (WSDC) and highly decomposed Estonian peat (PDC) were synthesized using hydrothermal carbonization and direct activation methods. The resulting carbonaceous mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5292f9b91c855b0d45b55d1fd4f6378e
https://doi.org/10.1007/s10800-019-01364-5
https://doi.org/10.1007/s10800-019-01364-5
Autor:
Ronald Väli, Kirsten M. Ø. Jensen, Enn Lust, Jon Fold von Bülow, Jette K. Mathiesen, Poul Norby, Meelis Härmas
Publikováno v:
Journal of Materials Chemistry A. 7:11709-11717
Successfully enabling a new battery technology, such as sodium-ion batteries, requires a thorough understanding of the functional properties of its building blocks. Knowing how the electrode materials behave upon operation is crucial to gain insight
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fc9b1e6cba26e81819087c477b085e1
https://doi.org/10.1039/c9ta02413a
https://doi.org/10.1039/c9ta02413a
Autor:
Patrick Teppor, Rutha Jäger, Meelis Härmas, Jaan Aruväli, Olga Volobujeva, Miriam Koppel, Enn Lust
Publikováno v:
ECS Meeting Abstracts. :1484-1484
A functioning hydrogen economy requires efficient ways of producing and utilizing hydrogen via electrolyzers and fuel cells. The commercialization of these devices is well underway but their considerable capital costs still inhibit faster adoption by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2062c650a3eba372ffaf2224eebc8b14
https://doi.org/10.1149/ma2022-01351484mtgabs
https://doi.org/10.1149/ma2022-01351484mtgabs