欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
应用固相反应法合成LiFePO4及掺杂Cu^2＋的LiFePO4，以XRD、XPS表征样品的结构及Fe存在的价态．发现掺杂少量的Cu^2＋未能改变LiFePO4材料的结构特征以及Fe^2＋的化学状态，但是Cu^2＋的掺杂使得LiFePO4材料的晶胞体积变小．充放电测试结果表明少量Cu^2＋的掺杂能显著地提高LiFePO4材料的大倍率输出能力，LiCu0.02 Fe0.98 PO4，其1C放电容量可达130mAh／g以上，较掺杂前提高了20％左右．
英文摘要：
LiFePO4 and LiFePO4 doped with Cu^2＋ ions were synthesized by sohd-state reactions. The structure of LiFePO4 and the Fe valence were analyzed by the XRD （ X-ray diffraction） and XPS （ X-ray photoelectron spectroscopy） respectively. The Cu doping position in LiFePO4 is discussed. It has found that the volume of LiFePO4 by doping Cu^2＋ ions is reduced. The minim Cu^2＋ ions doping does not almost change the binding energy of Fe2p1/2 in LiFePO4. According to the experiment results, we conclude that most of the Cu^2＋ ions substitute the Fe^2＋ ions in LiFePO4 when a small amount of Cu^2＋ ions doping is occurred.
同期刊论文项目
同项目期刊论文
期刊信息
位置：