Zobrazeno 1 - 10
of 81
pro vyhledávání: '"B.I. Rachiy"'
Publikováno v:
Фізика і хімія твердого тіла, Vol 25, Iss 1, Pp 51-56 (2024)
Fractal structure of porous carbon materials (PCMs) obtained by thermal modification under different regimes was investigated using the method of low-temperature porometry. It was established that at modification temperatures of 300 and 600°C, mater
Externí odkaz:
https://doaj.org/article/01293e9937ef49eb89e67e8e7312c9bc
Autor:
N.Ya. Ivanichok, O.M. Ivanichok, I.M. Budzulyak, P.I. Kolkovskyi, B.I. Rachiy, O.A. Vyshnevskyi, D.S. Borchuk, I.I. Ivaniv, A.M. Soltys
Publikováno v:
Фізика і хімія твердого тіла, Vol 25, Iss 1, Pp 57-64 (2024)
Porous carbon materials (PСM) with different pore distributions in size and size of the specific surface area up to 250 m2/g were obtained by changing the carbonization temperature of plant biomass, namely walnut shells. The electrodes of electroche
Externí odkaz:
https://doaj.org/article/c18de957eca448ed8018f8e4b72c3082
Publikováno v:
Фізика і хімія твердого тіла, Vol 24, Iss 2, Pp 348-353 (2023)
Using the method of low-temperature nitrogen adsorption/desorption, the porous structure of nanoporous carbon materials obtained by alkaline activation of light industry waste (walnut shells) with subsequent thermal modification was investigated. The
Externí odkaz:
https://doaj.org/article/11928019e27e412f8a150e75b93ea5a1
Autor:
I.M. Budzulyak, L.S. Yablon, M.M. Khemii, V.O. Kotsyubynsky, B.I. Rachiy, R.V. Ilnytskyi, R.I. Kryvulych
Publikováno v:
Фізика і хімія твердого тіла, Vol 24, Iss 2, Pp 403-409 (2023)
It has been established that the doping of activated carbon material with chromium and manganese increases the specific capacitance of storage devices based on the charge-discharge mechanism of a double electric layer (DEL) by ~70 % and leads to a de
Externí odkaz:
https://doaj.org/article/c39bb8e28d1e4517a825f746d7895daa
Autor:
N.Ya. Ivanichok, P.I. Kolkovskyi, A.M. Soltys, V.M. Boychuk, V.I. Mandzyuk, L.S. Yablon, B.I. Rachiy
Publikováno v:
Фізика і хімія твердого тіла, Vol 24, Iss 1, Pp 34-45 (2023)
The effect of orthophosphoric acid concentration as an activating agent on the porous structure of carbon materials derived from apricot pits and energy-intensive parameters of electrochemical capacitors formed on their basis is studied. It is found
Externí odkaz:
https://doaj.org/article/389d975bc5194b6c9f1c80c5128f7224
Autor:
V. M. Boychuk, R.I. Zapukhlyak, R.G. Abaszade, V.O. Kotsyubynsky, M.A. Hodlevsky, B.I. Rachiy, L.V. Turovska, A.M. Dmytriv, S.V. Fedorchenko
Publikováno v:
Фізика і хімія твердого тіла, Vol 23, Iss 4, Pp 815-824 (2022)
Ultrafine NiFe2O4 (T0) and NiFe2O4 / rGO composites have been synthesized by solution combustion method. The presence of rGO in the composite (33 wt.% (T1) or 66 wt.% (T2)) causes a decrease in the average particle size of the oxide phase from 16 to
Externí odkaz:
https://doaj.org/article/bf7a91b337bc4cfb9f5c80198f0e8b4f
Autor:
V.M. Boychuk, V.O. Kotsyubynsky, B.I. Rachiy, I.M. Budzulyak, R.I. Zapukhlyak, L.V. Turovska, S.V. Fedorchenko, O.M. Khatsevych
Publikováno v:
Фізика і хімія твердого тіла, Vol 23, Iss 3, Pp 524-530 (2022)
A systematic study of the effect of various types of surfactants (polyethylene glycol, Trinon X-100 and cetyltrimethylammonium bromide) and subsequent annealing on the magnetic ordering and morphology of the nickel ferrite / reduced graphene oxide co
Externí odkaz:
https://doaj.org/article/48bb362c968345328d8d19ed0d6908af
Autor:
S.-V. S. Sklepova, I.M. Gasyuk, N.Ya. Ivanichok, P.I. Kolkovskyi, V.O. Kotsyubynsky, B.I. Rachiy
Publikováno v:
Фізика і хімія твердого тіла, Vol 23, Iss 3, Pp 484-490 (2022)
Nanoporous carbon materials (NCM) are used to prepare supercapacitor (SC) electrodes. The high specific energy parameters of SC are closely related to the physical and electrochemical characteristics of NCM. NCM with a highly developed surface area a
Externí odkaz:
https://doaj.org/article/498944f79039481dbd45233b8185924a
Autor:
N.Ya. Ivanichok, O.M. Ivanichok, P.I. Kolkovskyi, B.I. Rachiy, S.-V.S. Sklepova, Yu.O. Kulyk, V.V. Bachuk
Publikováno v:
Фізика і хімія твердого тіла, Vol 23, Iss 1, Pp 172-178 (2022)
Samples of porous carbon material (PCM) were obtained by carbonization of the feedstock (walnut shells). Small-angle X-ray scattering (SAXS) was used to study the porous structure of the obtained carbon materials. The fractal dimension of the surface
Externí odkaz:
https://doaj.org/article/497448538f7d46b7988fd1fd236912a8
Autor:
H.M. Kolkovska, B.I. Rachiy, P.I. Kolkovskyi, I.P. Yaremiy, N.Ya. Ivanichok, R.P. Lisovskiy, N.R. Ilnytskyi
Publikováno v:
Фізика і хімія твердого тіла, Vol 22, Iss 4, Pp 644-654 (2021)
In this work, the electrochemical behavior of LaMnO3 perovskite material and nanoporous carbon material in an aqueous solution of lithium sulfate are studied. The regularities of the expediency of the joint functioning of these materials as electrode
Externí odkaz:
https://doaj.org/article/52de85d359b546dfb9629ee5cbabd2e7