SYNTHESIS, STRUCTURE AND ELECTROCHEMICAL PROPERTIES OF LiNi_(0.5-x)Al_xCo_(0.5)O_2 OXIDES (0≤x≤0.3)

机译：LiNi_（0.5-x）Al_xCo_（0.5）O_2氧化物（0≤x≤0.3）的合成，结构与电化学性能

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LiNi_(0.5-x)Al_xCo_(0.5)O_2 (x≤0.30) solid solutions have been synthesized by a sol-gel method using succinic acid as chelating agent. X-ray diffraction patterns show that all samples are single phase and have the layered α-NaFeO_2 structure. The regular variation of the lattice parameters and the IR frequency modes indicate the formation of the solid solutions. Aluminium content increases the interval of thermal stability favouring the . formation of a well-crystallized LiNi_(0.5-x)Al_xCo_(0.5)O_2 powders at a lower temperature and preventing the loss of lithium oxide. The grain size decreases upon doping and this fact can favor the lithium diffusion. Both the initial charge and discharge capacities decrease with the aluminium content. However, Li-ion coefficients increase with Al~(3+) doping.

机译：使用琥珀酸作为螯合剂，通过溶胶-凝胶法合成了LiNi_（0.5-x）Al_xCo_（0.5）O_2（x≤0.30）固溶体。 X射线衍射图表明，所有样品均为单相且具有层状α-NaFeO_2结构。晶格参数和红外频率模式的规则变化表明固溶体的形成。铝含量增加了热稳定性的时间间隔，有利于铝。在较低温度下形成结晶良好的LiNi_（0.5-x）Al_xCo_（0.5）O_2粉末并防止氧化锂的损失。掺杂后晶粒尺寸减小，并且该事实可以有利于锂扩散。初始充放电容量均随铝含量的降低而降低。然而，锂离子系数随Al〜（3+）掺杂而增加。

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《NATO Advanced Study Institute on New Trends in Intercalation Compounds for Energy Storage, Sep 22-Oct 2, 2001, Sozopol, Bulgaria》|2001年|p.523-530|共8页
会议地点 Sozopol(BG)
作者
A. CASTRO-COUCEIRO; S. CASTRO-GARCIA; M. A. SENARIS- RODRIGUEZ; C. REY-CABEZUDO; C. JULIEN;
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Departamento de Quimica Fundamental, University of A Coruna A Coruna, Spain;

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正文语种 eng
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SYNTHESIS, STRUCTURE AND ELECTROCHEMICAL PROPERTIES OF LiNi_(0.5-x)Al_xCo_(0.5)O_2 OXIDES (0≤x≤0.3)

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