Miriam Koppel
University of Tartu
26 Papers
5 Citations
Miriam Koppel is an academic researcher from University of Tartu. The author has contributed to research in topics: Chemistry & Catalysis. The author has an hindex of 4, co-authored 7 publications.
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Papers
Peat-derived hard carbon electrodes with superior capacity for sodium-ion batteries
Anu Adamson,Ronald Väli,Maarja Paalo,Jaan Aruväli,Miriam Koppel,Rasmus Palm,Eneli Härk,Jaak Nerut,Tavo Romann,Enn Lust,Alar Jänes +10 more
TL;DR: In this article, the authors demonstrate how peat, abundant and cheap biomass, can be successfully used as a precursor to synthesize peat-derived hard carbons (PDCs), applicable as electrode materials for sodium-ion batteries (SIB).
Hydrothermal and peat-derived carbons as electrode materials for high-efficient electrical double-layer capacitors
Meelis Härmas,Rasmus Palm,Thomas Thomberg,Riinu Härmas,Miriam Koppel,Maarja Paalo,Indrek Tallo,Tavo Romann,Alar Jänes,Enn Lust +9 more
TL;DR: In this article, the electrochemical characteristics of the electrical double-layer capacitors (EDLCs) based on 1.M Et3MeNBF4 solution in acetonitrile and EtMeImBF4 were measured using two-electrode cells.
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Transport properties of H2 confined in carbide-derived carbons with different pore shapes and sizes
Riinu Härmas,Rasmus Palm,Margarita Russina,Heisi Kurig,Veronika Grzimek,Eneli Härk,Miriam Koppel,Indrek Tallo,Maarja Paalo,Ove Oll,Jan Peter Embs,Enn Lust +11 more
TL;DR: In this paper, a combined approach of volumetric gas adsorption method and in-situ quasi-elastic neutron scattering method was used to investigate the relationship between final macroscopic intake properties, details of the local adsorbent structure and the molecular behaviour of confined hydrogen are established.
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In situ observation of pressure modulated reversible structural changes in the graphitic domains of carbide-derived carbons
Miriam Koppel,Rasmus Palm,Riinu Härmas,Margarita Russina,Nami Matsubara,Martin Månsson,Veronika Grzimek,Maarja Paalo,Jaan Aruväli,Tavo Romann,Ove Oll,Enn Lust +11 more
TL;DR: In this article, the authors reported the reversible formation of graphitic structures with three distinct interlayer distances in case of two carbide-derived carbons (CDCs) loaded under hydrogen pressure observed with in situ neutron scattering methods.
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Pore wall corrugation effect on the dynamics of adsorbed H2 studied by in situ quasi-elastic neutron scattering: Observation of two timescaled diffusion
Miriam Koppel,Rasmus Palm,Riinu Härmas,Margarita Russina,Veronika Grzimek,Jacek Jagiello,Maarja Paalo,Heisi Kurig,Martin Mansson,Ove Oll,Enn Lust +10 more
TL;DR: In this paper , the effect of pore shape and size on the nature of adsorbed H 2 self-diffusion was investigated with in situ quasi-elastic neutron scattering method at a temperature range from 50 K to 100 K.
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