Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Diana Nihtianova"'
Publikováno v:
Metals, Vol 13, Iss 5, p 943 (2023)
The study investigates the effects of graphene nanoplatelets (GNPs) on the tribological properties of aluminum-based nanocomposites, both annealed after extrusion and non-annealed. It also examines the role of nanosized Al4C3 (aluminum carbide), whic
Externí odkaz:
https://doaj.org/article/5f67ae13ce74449db8cea87f489bd789
Autor:
Mariya Kalapsazova, Rositsa Kukeva, Sonya Harizanova, Pavel Markov, Diana Nihtianova, Ekaterina Zhecheva, Radostina Stoyanova
Publikováno v:
Batteries, Vol 9, Iss 2, p 144 (2023)
Layered sodium transition metal oxides belong to electrode materials for sodium-ion batteries that combine, in a better way, high performance with environmental requirements. However, their cycling stability is still far from desirable. Herein, we de
Externí odkaz:
https://doaj.org/article/ffbaaaa0c3a24a62b51e959acbb616ed
Publikováno v:
Metals, Vol 12, Iss 12, p 2057 (2022)
Reinforcement of aluminum and aluminum alloys with graphene has been intensively practiced by researchers in the past dozen years. The role of Al4C3, which could be produced unintentionally or purposefully during the composite production, was controv
Externí odkaz:
https://doaj.org/article/2a18c071be42427d93baaac44d73bdea
Autor:
Dimitar Panayotov, Videlina Zdravkova, Oleg Lagunov, Stanislava Andonova, Ivanka Spassova, Diana Nihtianova, Genoveva Atanasova, Nikola Drenchev, Elena Ivanova, Mihail Mihaylov, K. Hadjiivanov
Publikováno v:
Physical Chemistry Chemical Physics.
Ceria and ceria-zirconia nanomaterials of different origin were studied in order to elucidate the role of their structural and texture characteristics in controlling the performance towards capturing CO2 from effluent...
Publikováno v:
Materials Today: Proceedings. 61:1233-1236
Publikováno v:
Inorganics, Vol 8, Iss 2, p 12 (2020)
Magnesium-based materials are promising as hydrogen storage media due to their high theoretical hydrogen absorption capacity, abundance and low price. The subject of this study are the hydrogen sorption characteristics of the composites 80 wt % MgH2-
Externí odkaz:
https://doaj.org/article/f9c808d8f32f4ec4973e8c87d3fd231f
Autor:
Ekaterina Zhecheva, Diana Nihtianova, Mariya Kalapsazova, Pavel Markov, Krassimir L. Kostov, Radostina Stoyanova
Publikováno v:
Batteries & Supercaps. 3:1329-1340
Autor:
Diana Nihtianova, Radostina Stoyanova, T. Boyadzhieva, Rosica R. Kukeva, Sonya Harizanova, Violeta Koleva
Publikováno v:
RSC Advances. 10:29051-29060
Sodium manganese phospho-olivine, NaMnPO4, is considered to be a higher-voltage alternative to the presently used iron-based electrode material, NaFePO4, for sodium ion batteries. Irrespective of this advantage, the electrochemical performance of NaM
Autor:
S. Todorova, Alexander V. Larin, Ralitsa Velinova, Diana Nihtianova, Pavel Markov, Anton Naydenov, M. Shipochka, Boris Drenchev, Daniela Kovacheva, Georgi Ivanov
Publikováno v:
Chemical Engineering Journal. 368:865-876
New and complex results on catalytic activity, thermal stability, effect of H2O and SO2 on the Pd/La2O3-CeO2-Al2O3 model system in methane combustion have been obtained. The catalyst characterization has been made by N2- physisorption, XRD, SEM/EDX,
Autor:
K. Wasiński, A. E. Stoyanova, Sv. Ivanova, Diana Nihtianova, Sv. Veleva, P. Półrolniczak, Radostina Stoyanova
Publikováno v:
Dalton Transactions. 48:13641-13650
The storage of energy by means of reversible intercalation of bivalent magnesium ions represents, nowadays, the shortest route for doubling the energy density of conventional lithium ion batteries. Contrary to the intercalation of monovalent lithium