Effect of bication (Cu-Cr) substitution on the structure and electrochemical performance of LiMn2O4 spinel cathodes at low and high current rates
المؤلفون المشاركون
Khan, Abd al-Majid
Iqbal, Azhar
Iqbal, Yusuf
Ahmad, Safir
المصدر
Journal of Saudi Chemical Society
العدد
المجلد 22، العدد 4 (31 مايو/أيار 2018)، ص ص. 449-458، 10ص.
الناشر
تاريخ النشر
2018-05-31
دولة النشر
السعودية
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
This report describes the detailed structural and electrochemical characterization of a series of low content (0.01 to 0.05) Cu-Cr bi-metal doped LiMn2O4 cathode material synthesized by sol–gel method.
The structural and morphological features were described using XRD, SEM, TEM, EDAX and FTIR techniques.
The electron transfer and its feasibility were discussed through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements.
The charge–discharge studies were performed to evaluate the capacity fading and rate capability.
It was found that the electrochemical performance is very much dependent on the amount of Cu-Cr bi-metal doping and interestingly decreased the capacity fading with high cycleability.
The sample with the least amount of dopants (i.e., LiCu0.01Cr0.01Mn1.98O4) demonstrated much improved capacity, cycleability and high rate capability.
The LiCu0.01Cr0.01Mn1.98O4 cathode exhibited a discharge capacity of 112 mA h g at very first cycle and retained 93 mA h g 1 after 100 cycles at a C rate of 0.3.
Further, the same material at very high current density (5 C) retained 83% of the initial discharge capacity.
The Cu-Cr doping stabilized the spinel structure by suppressing the Jahn-Teller distortion effect and Mn dissolution and the resultant material showed the workability of the cathodes for devices which work at substantially high C-rate of 5C.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Iqbal, Azhar& Iqbal, Yusuf& Khan, Abd al-Majid& Ahmad, Safir. 2018. Effect of bication (Cu-Cr) substitution on the structure and electrochemical performance of LiMn2O4 spinel cathodes at low and high current rates. Journal of Saudi Chemical Society،Vol. 22, no. 4, pp.449-458.
https://search.emarefa.net/detail/BIM-835398
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Iqbal, Azhar…[et al.]. Effect of bication (Cu-Cr) substitution on the structure and electrochemical performance of LiMn2O4 spinel cathodes at low and high current rates. Journal of Saudi Chemical Society Vol. 22, no. 4 (May. 2018), pp.449-458.
https://search.emarefa.net/detail/BIM-835398
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Iqbal, Azhar& Iqbal, Yusuf& Khan, Abd al-Majid& Ahmad, Safir. Effect of bication (Cu-Cr) substitution on the structure and electrochemical performance of LiMn2O4 spinel cathodes at low and high current rates. Journal of Saudi Chemical Society. 2018. Vol. 22, no. 4, pp.449-458.
https://search.emarefa.net/detail/BIM-835398
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 458
رقم السجل
BIM-835398
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر