采用碳酸盐共沉淀法合成了Li1＋xNi1/3Co1/3Mn1/3O2正极材料。用X射线粉末衍射仪、高频电感耦合等离子体原子发射光谱仪和扫描电子显微镜对材料的晶体结构、化学元素组成和表面形貌进行了分析研究。将正极材料Li1＋xNi1/3Co1/3Mn1/3O2制成电极极片,组装成混合动力车用3Ah高功率电池进行测试。分析测试结果表明,合成的正极材料Li1＋xNi1/3Co1/3Mn1/3O2具有典型的α-NaFeO2结构,粒径约为10μm。在室温（25℃）,电池经2000次充放电循环后容量可保持80%;在50%DOD下,电池10 s脉冲输出功率密度为2100 W/kg,输入功率密度为2700 W/kg。
Li1＋xNi1/3Co1/3Mn1/3O2 cathode material was synthesized by carbonate co-precipitation method and its structure,chemistry element and morphology were analyzed by X-ray powder diffraction（XRD）,high frequency inductively coupled plasma atomic emission spectrometry（ICP-AES）and scanning electron microscopy（SEM）.3Ah lithium-ion batteries were prepared with Li1＋xNi1/3Co1/3Mn1/3O2 cathode material for hybrid electric vehicles（HEV） and the battery performances were studied.The results show that Li1＋xNi1/3Co1/3Mn1/3O2 cathode material exhibits typical α-NaFeO2 structure and the particle size is about 10 μm.The capacity retention is 80% after 2000 cycles at room temperature（25 ℃）.At 50% DOD,the 10 s pulse discharge power density is 2100 W/kg and the 10 s pulse regen（charge） power density is 2700 W/kg.
参考文献
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