Increasing the Performance of {[(1-x-y) LiCo0.3Cu0.7] (Al and Mg doped)] O2}, xLi2MnO3, yLiCoO2 Composites as Cathode Material in Lithium-Ion Battery: Synthesis and Characterization
Yazarlar (3)
Sara Shahriari Islamic Azad University, Central Tehran Branch, İran
Dr. Öğr. Üyesi Fatemeh MOLLAAMIN Kastamonu Üniversitesi, Türkiye
Prof. Dr. Majıd MONAJJEMI Islamic Azad University, Central Tehran Branch, İran
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Micromachines (Q2)
Dergi ISSN 2072-666X Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 02-2023
Cilt / Sayı / Sayfa 14 / 2 / – DOI 10.3390/mi14020241
Makale Linki https://www.mdpi.com/2072-666X/14/2/241
Özet
Twenty-eight samples of {[(1-x-y) LiCo0.3Cu0.7](Al and Mg doped)]O2}, xLi2MnO3, and yLiCoO2 composites were synthesized using the sol–gel method. Stoichiometric weights of LiNO3, Mn(Ac)2⋅4H2O, Co(Ac)2⋅4H2O, Al(NO3)3.H2o, Mg(NO3)2⋅6H2O, and Cu(NO3)2.H2O for the preparation of these samples were applied. From this work, we confirmed the high performance of two samples, namely, Sample 18, including Al doped with structure “Li1.5Cu0.117Co0.366Al0.017Mn0.5O2” and Sample 17, including Mg doped with structure “Li1.667Cu0.1Mg0.017Co0.217Mn0.667O2”, compared with other compositions. Evidently, the used weight of cobalt in these two samples were lower compared with LiCoO2, resulting in advantages in the viewpoint of cost and toxicity problems. Charge and discharge characteristics of the mentioned cathode materials were investigated by performing cycle tests in the range of 2.2–4.5 V. These types of systems can help to reduce the disadvantages of cobalt arising from its high cost and toxic properties. Our results confirmed that the performance of such systems is similar to that of pure LiCoO2 cathode material, or greater in some cases. The biggest disadvantages of LiCoO2 are its cost and toxic properties, typically making it cost around five times more to manufacture than when using copper.
Anahtar Kelimeler
Al doping | cathode materials | LiCoO2 | lithium-ion batteries | Mg doping