Ce0.65Zr0.35O2 solid solution was prepared by co-precipitation method and characterized by X-ray diffraction (XRD), Raman spectra, BET, oxygen storage capacity (OSC) and temperature-programmed reduction measurements (...Ce0.65Zr0.35O2 solid solution was prepared by co-precipitation method and characterized by X-ray diffraction (XRD), Raman spectra, BET, oxygen storage capacity (OSC) and temperature-programmed reduction measurements (H2-TPR) after calcination at 100 ℃, 300 ℃, 600 ℃, and 1 000 ℃. The results showed that the precipitation was a crystalline of fluorite structure, and in the process of the precipitation transformation into Ce0.65Zr0.35O2 solid solution, the fluorite structure of the precipitation kept unchanged. The samples had different BET surface areas and OSC at different temperatures, but they held the performance of stable structure. After 1 000 ℃, there didn′t appear the other crystalline phase. So the samples prepared by co-precipitation method had excellent texture and higher thermal stability.展开更多
将化学计量比的前驱体Ni0.35Mn0.65（OH）2与Li2CO3均匀混合,采用不同高温段温度合成Li1.35[Ni0.35Mn0.65]O2＋y富锂锰基正极材料。对合成的材料进行表征,结果表明：所合成的Li1.35[Ni0.35Mn0.65]O2＋y正极材料为均匀的类球形,单颗粒大...将化学计量比的前驱体Ni0.35Mn0.65（OH）2与Li2CO3均匀混合,采用不同高温段温度合成Li1.35[Ni0.35Mn0.65]O2＋y富锂锰基正极材料。对合成的材料进行表征,结果表明：所合成的Li1.35[Ni0.35Mn0.65]O2＋y正极材料为均匀的类球形,单颗粒大小均匀;XRD图谱显示材料为层状的α-Na Fe O2结构。将材料组装成CR2016扣式电池,采用蓝电测试仪以12.5 m A/g的电流密度进行充放电测试,2.0~4.8 V之间,最高初始放电比容量为198.0 m Ah/g,首次放电效率为69.7%。展开更多
文摘Ce0.65Zr0.35O2 solid solution was prepared by co-precipitation method and characterized by X-ray diffraction (XRD), Raman spectra, BET, oxygen storage capacity (OSC) and temperature-programmed reduction measurements (H2-TPR) after calcination at 100 ℃, 300 ℃, 600 ℃, and 1 000 ℃. The results showed that the precipitation was a crystalline of fluorite structure, and in the process of the precipitation transformation into Ce0.65Zr0.35O2 solid solution, the fluorite structure of the precipitation kept unchanged. The samples had different BET surface areas and OSC at different temperatures, but they held the performance of stable structure. After 1 000 ℃, there didn′t appear the other crystalline phase. So the samples prepared by co-precipitation method had excellent texture and higher thermal stability.
文摘将化学计量比的前驱体Ni0.35Mn0.65（OH）2与Li2CO3均匀混合,采用不同高温段温度合成Li1.35[Ni0.35Mn0.65]O2＋y富锂锰基正极材料。对合成的材料进行表征,结果表明：所合成的Li1.35[Ni0.35Mn0.65]O2＋y正极材料为均匀的类球形,单颗粒大小均匀;XRD图谱显示材料为层状的α-Na Fe O2结构。将材料组装成CR2016扣式电池,采用蓝电测试仪以12.5 m A/g的电流密度进行充放电测试,2.0~4.8 V之间,最高初始放电比容量为198.0 m Ah/g,首次放电效率为69.7%。
