Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Ashraf E. Abdel-Ghany"'
Publikováno v:
Sustainable Chemistry, Vol 3, Iss 2, Pp 131-148 (2022)
This study aims to investigate the effect of Na doping on the structure, electrical, and electrochemical properties of lithium-rich cathode material. Pristine Li1.2Ni0.13Mn0.54Co0.13O2 (LNMC) and Na-doped Li1.17Na0.03Ni0.13Mn0.54Co0.13O2 (Na-LNMC) la
Externí odkaz:
https://doaj.org/article/6c8adb4aaf3c4af4a7e96c5300266a2b
Autor:
Xintong Li, Kai Chang, Somia M. Abbas, Rasha S. El-Tawil, Ashraf E. Abdel-Ghany, Ahmed M. Hashem, Hua Wang, Amanda L. Coughlin, Shixiong Zhang, Alain Mauger, Likun Zhu, Christian M. Julien
Publikováno v:
Micromachines, Vol 14, Iss 5, p 907 (2023)
Surface coating has become an effective approach to improve the electrochemical performance of Ni-rich cathode materials. In this study, we investigated the nature of an Ag coating layer and its effect on electrochemical properties of the LiNi0.8Co0.
Externí odkaz:
https://doaj.org/article/a99eefd0519640eaaf5554332c5f9d1d
Autor:
Tianyi Li, Kai Chang, Ahmed M. Hashem, Ashraf E. Abdel-Ghany, Rasha S. El-Tawil, Hua Wang, Hazim El-Mounayri, Andres Tovar, Likun Zhu, Christian M. Julien
Publikováno v:
Electrochem, Vol 2, Iss 1, Pp 95-117 (2021)
This work presents a contribution to the study of a new Ni-rich spinel cathode material, LiNiMnO4, for Li-ion batteries operating in the 5-V region. The LiNiMnO4 compound was synthesized by a sol-gel method assisted by ethylene diamine tetra-acetic a
Externí odkaz:
https://doaj.org/article/dc3053e740fe417a9d60e70d5c9f80b3
Autor:
Hua Wang, Tianyi Li, Ahmed M. Hashem, Ashraf E. Abdel-Ghany, Rasha S. El-Tawil, Hanaa M. Abuzeid, Amanda Coughlin, Kai Chang, Shixiong Zhang, Hazim El-Mounayri, Andres Tovar, Likun Zhu, Christian M. Julien
Publikováno v:
Nanomaterials, Vol 12, Iss 1, p 13 (2021)
This work aimed at synthesizing MoO3 and MoO2 by a facile and cost-effective method using extract of orange peel as a biological chelating and reducing agent for ammonium molybdate. Calcination of the precursor in air at 450 °C yielded the stochiome
Externí odkaz:
https://doaj.org/article/f42310c544ae4f6a99817f07c84dec13
Autor:
Rasha S. El-Tawil, Shaimaa T. El-Wakeel, Ashraf E. Abdel-Ghany, Hanaa A.M. Abuzeid, Khaled A. Selim, Ahmed M. Hashem
Publikováno v:
Heliyon, Vol 5, Iss 9, Pp e02415- (2019)
Silver nanoparticles (AgNPs) and silver/quartz nanocomposite (Ag/Q)NPs)) were synthesized by sol-gel method using table sugar as chelating agent. The synthesized nanosized materials were used for mercury ions adsorption from aqueous solutions. The ma
Externí odkaz:
https://doaj.org/article/8dded7f1a56e40dca33ec5b96a1da761
Publikováno v:
Heliyon, Vol 5, Iss 7, Pp e02027- (2019)
This study succeeded to prepare three pure phases of Mn2O3, Mn3O4 beside one of the best cathode materials, spinel LiMn2O4. LiMn2O4 with high phase purity and crystallinity was synthesized by a facile, cost effective and one step synthesis method. Th
Externí odkaz:
https://doaj.org/article/03ca1b34ab5a4e40a874d27acfc86127
Autor:
Somia M. Abbas, Ahmed M. Hashem, Ashraf E. Abdel-Ghany, Eman H. Ismail, Mário Kotlár, Martin Winter, Jie Li, Christian M. Julien
Publikováno v:
Energies, Vol 13, Iss 19, p 5194 (2020)
In this work, the properties of silver-modified LiMn2O4 cathode materials are revisited. We study the influence of calcination atmosphere on the properties of the Ag-coated LiMn2O4 (Ag/LMO) and highlight the silver oxidation. The effect of the heat t
Externí odkaz:
https://doaj.org/article/1303711559cd4bbe8265ce90b7a50372
Autor:
Ahmed M. Hashem, Ashraf E. Abdel-Ghany, Marco Scheuermann, Sylvio Indris, Helmut Ehrenberg, Alain Mauger, Christian M. Julien
Publikováno v:
Materials, Vol 12, Iss 18, p 2899 (2019)
A series of Li(Ni1/3Mn1/3Co1/3)1−xMxO2 (M = Al, Mg, Zn, and Fe, x = 0.06) was prepared via sol-gel method assisted by ethylene diamine tetra acetic acid as a chelating agent. A typical hexagonal α-NaFeO2 structure (R-3m space group) was observed f
Externí odkaz:
https://doaj.org/article/86396e6061474734834f560f7397fb40
Autor:
Hua Wang, Ahmed M. Hashem, Ashraf E. Abdel-Ghany, Somia M. Abbas, Rasha S. El-Tawil, Tianyi Li, Xintong Li, Hazim El-Mounayri, Andres Tovar, Likun Zhu, Alain Mauger, Christian M. Julien
Publikováno v:
International Journal of Molecular Sciences; Volume 23; Issue 12; Pages: 6755
Elemental doping for substituting lithium or oxygen sites has become a simple and effective technique to improve the electrochemical performance of layered cathode materials. Compared with single-element doping, this work presents an unprecedented co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fd29abd6d6ad8c9c8fcec340d088b72
Autor:
Rasha S. El-Tawil, Hazim El-Mounayri, Christian M. Julien, Ahmed M. Hashem, Andres Tovar, Hua Wang, Kai Chang, Tianyi Li, Likun Zhu, Ashraf E. Abdel-Ghany
Publikováno v:
Electrochem
Volume 2
Issue 1
Pages 9-117
Electrochem, Vol 2, Iss 9, Pp 95-117 (2021)
Volume 2
Issue 1
Pages 9-117
Electrochem, Vol 2, Iss 9, Pp 95-117 (2021)
This work presents a contribution to the study of a new Ni-rich spinel cathode material, LiNiMnO4, for Li-ion batteries operating in the 5-V region. The LiNiMnO4 compound was synthesized by a sol-gel method assisted by ethylene diamine tetra-acetic a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a70097af93162bab67c0085cbcde8859
https://doi.org/10.3390/electrochem2010009
https://doi.org/10.3390/electrochem2010009