锂(药物)
材料科学
化学计量学
极化(电化学)
离子
兴奋剂
化学工程
锂离子电池
分析化学(期刊)
电化学
阴极
电池(电)
磷酸铁锂
电解质
无机化学
阳极
电极
光电子学
物理化学
化学
有机化学
色谱法
内分泌学
医学
作者
Xiao Huang,Chao Yang,Yao Yao
出处
期刊:Advanced Materials Research
日期:2013-10-01
标识
DOI:10.4028/www.scientific.net/amr.815.423
摘要
Stoichiometric Mg 2+ and Ti 4+ with different proportions were doped to prepare the LiFe 1-x-y Mg x Ti y PO 4 cathode materials by high temperature solid state method. The samples were investigated with XRD, SEM and charge/discharge measurements. Results show that doping of Mg 2+ and Ti 4+ distinctly changes the paticle sizes and morphologies, which leads to a improvement of electrochemical performance. The mix-doped LiFe 0.98 Mg 0.01 Ti 0.01 PO 4 material shows the best electrochemical performance due to its smaller crystalline particles and lower the polarization. At the discharge rate of 0.1C, the initial specific capacity of LiFe 0.98 Mg 0.01 Ti 0.01 PO 4 is 105.78 mAh·g -1 , its high-rate performance is also better.
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