循环伏安法
阴极
电化学
拉曼光谱
扫描电子显微镜
插层(化学)
材料科学
兴奋剂
分析化学(期刊)
电池(电)
尖晶石
锂(药物)
介电谱
离子
锂离子电池
无机化学
化学
电极
物理化学
复合材料
光电子学
有机化学
医学
功率(物理)
物理
量子力学
光学
冶金
内分泌学
作者
Rahúl Singhal,Suprem R. Das,M. S. Tomar,Osbert Ovideo,S. Nieto,R. E. Melgarejo,Ram S. Katiyar
标识
DOI:10.1016/j.jpowsour.2006.09.098
摘要
Spinel powders of LiMn1.99Nd0.01O4 have been synthesized by chemical synthesis route to prepare cathodes for Li-ion coin cells. The structural and electrochemical properties of these cathodes were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, cyclic voltammetry, and charge-discharge studies. The cyclic voltammetry of the cathodes revealed the reversible nature of Li-ion intercalation and deintercalation in the electrochemical cell. The charge-discharge characteristics for LiMn1.99Nd0.01O4 cathode materials were obtained in 3.4–4.3 V voltage range and the initial discharge capacity of this material were found to be about 149 mAh g−1. The coin cells were tested for up to 25 charge-discharge cycles. The results show that by doping with small concentration of rare-earth element Nd, the capacity fading is considerably reduced as compared to the pure LiMn2O4 cathodes, making it suitable for Li-ion battery applications.
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