en سیستم های ذخیره ساز انرژی Storage systems (battery, ultracapacitor, flywheel, etc) پژوهشي Research <span style="font-size:11pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><span style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">High-entropy oxides (HEOs) are single-phase crystal structures composed of multiple metal elements that provide great potential for energy storage applications due to the synergistic effect of various metal species. They are considered effective anode materials for high-performance lithium-ion batteries (LIBs) because of their structural stability, high electronic conductivity, and ability to create anode materials with novel structures using several elemental compounds. Because the effects of different types of electrochemically active elements on the properties of anode materials are unknown, it is necessary to develop HEOs and investigate their properties. Herein, to explore the electrochemical properties of HEOs by changing the content of cations with various mechanisms for storing lithium, we prepared three samples of HEOs with spinel structure using the solid-state method, one of which is equimolar ((MgNiTiFeZn)_0.6O₄) and two numbers are near-equimolar ((Mg_0.6Ni_0.6Ti_0.3Fe_0.9Zn_0.6)O₄ and (Mg_0.6Ni_0.6Ti_0.3Zn_0.9Fe_0.6)O₄)). For structural properties determination, X-ray diffraction analysis was used. The results confirmed the formation of three single-phase high-entropy oxides.</span></span></span></span></span><br> <span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">Electrochemical tests indicated the structural stability of three compounds of high entropy oxides, and the composition of (MgNiTiFeZn)_0.6O₄, relative to the others, has better rate capability (163 </span></span></span><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">mAhg^&minus;1</span></span></span><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""> at 1000 mAg^&ndash;1) and higher discharge capacity (220 </span></span></span><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">mAhg^&minus;1 </span></span></span><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">at 200 mAg^&ndash;1) after 200 cycles.</span></span></span> Lithium-ion battery, anode, Transition metal oxides, high-entropy oxides 4378 4387 http://ase.iust.ac.ir/browse.php?a_code=A-10-800-1&slc_lang=en&sid=1 Fatemeh Ganjali fateme.ganjali@yahoo.com 180031947532846004731 180031947532846004731 No Renewable Energies, Magnetism and Nanotechnology Research Laboratory, Faculty of Science, Ferdowsi University of Mashhad, Mashhad Hadi Arabi arabi-h@um.ac.ir 180031947532846004732 180031947532846004732 Yes Department of Physics, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran Shaban Reza Ghorbani sh.ghorbani@um.ac.ir 180031947532846004733 180031947532846004733 No Department of Physics, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran Nasrin Azad n2010.azad@gmail.com 180031947532846004734 180031947532846004734 No Ati Kavan Energy Part Co. High Technology Industrial Estate, Mashhad. Iran