Merve TEKİN, Burak ASLAN, Emre ATEŞ, Mustafa GÖZÜAÇIK, Tuğçe KARABACAK, Aydın KÖKNAR, Gürsel ÖRS, Abdullah Kamil ÖZSOY, Sümeyye ÜNLÜ, Can Fırat YAMACI, Sevda AVCI, Deran TURAN, Uğur VURAL

Mn Katkısının LiCoO2 Katot Aktif Maddesinin Yapısı ve Morfolojisine Olan Etkileri

Güncel hayatımızda, cep telefonları ve diz üstü bilgisayarlar gibi taşınabilir elektronik cihazların sayısının hızla artması ile yüksek enerji yoğunluklu, hafif, kompakt ve şarj edilebilir pillerle ilgili araştırmalar yoğunlaşmıştır. Bu makalede Li‐iyon pillerinde en çok kullanılan katot malzemesi olan LiCoO2de Co yerine Mn katkılaması yapılarak, bu katkılamanın kristal yapı ve morfolojik özellikleri nasıl etkilediği incelenmiştir. LiCo1‐xMnxO2 bileşikleri x=0.1 aralığında katıhal reaksiyonları ile üretilmiş ve örneklerin yapısal ve morfolojik özellikleri XRD ve SEM teknikleri ile araştırılmıştır. Bu çalışmalar sonucunda 0≤x≤0.2 örneklerinde LiCoO2 fazı kararlı faz durumunda iken, Mn miktarının artması ile Li2MnO3ve LiMn2O4 spinel fazı ortaya çıkmıştır.

Effects of Mn Substitution on the structure and morphology of LiCoO2 Cathode Active Material

With the rapid increase in the number of mobile phones and portable electronic devices in our daily life, researchers have focused on high energy density, light weight and compact rechargeable batteries. In this report, effects of Mn substitution on structural and morphological properties of LiCoO2 which is one of the well‐known cathode materials for Li‐ion batteries were investigated. LiCo1‐xMnxO2 compounds with x=0.1 intervals were synthesized via solid state reactions technique. Structural and morphological properties of the samples are investigated via XRD and SEM. Based on our studies; we found that in 0≤x≤0.2 samples, LiCoO2 phase is the stable phase. As the Mn content increases, other phases such as Li2MnO3 and spinel LiMn2O4emerge.

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