包覆碳掺CoLiFePO4正极的电化学性能研究

CORC > 厦门大学 > 2011年第17卷

	包覆碳掺CoLiFePO4正极的电化学性能研究; Electrochemical performances of C-coating and Co-doping LiFePO4
	白莹 ; 杨觉明 ; 卿春波 ; 张伟风 ; BAI Ying ; YANG Jue-Ming ; QING Chun-Bo ; ZHANG Wei-Feng
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9806.shtml
	2011-08-28
关键词	锂离子电池 LiFePO4 碳包覆 Co掺杂颗粒大小 lithium ion batteries cathode material carbon-coating Co-doping particle size
英文摘要	应用水热法在200 oC下合成了橄榄石结构LiFePO4正极材料，合成过程中添加蔗糖作为包覆用碳源，并同时掺Co. 实验表明，包覆碳掺Co能更有效地改善LiFePO4电极的电化学性能. 样品可后退火处理，400 oC 退火LiFePO4样品结晶度和颗粒尺寸均影响了其电化学性能，包覆碳掺CoLiFePO4样品可使颗粒细化，改善电极倍率性能.; Phospho-olivine LiFePO4 cathode materials were prepared by hydrothermal reaction at 200 oC. Sucrose was added as C-coating resource and Co was doped into the crystal lattice of LiFePO4. In order to investigate the improvements in the electrochemical properties of Co-doped LiFePO4, three samples, LiFePO4, C-coated LiFePO4 and C-coating-Co-doped LiFePO4, were synthesized under the same preparation conditions. Charge/discharge studies reveal that the Co-doped LiFePO4/C composite annealed at 400 oC exhibits marked improvement of specific capacity by diminishing the particle sizes and enhancement in the degree of crystallinity. The C-coating and Co-doped into the LiFePO4 crystal lattices improve the rate performance through the reduction of the particle sizes.; 国家自然科学基金（50902044, 60976016），河南省创新人才培养工程（2002006），河南省教育厅自然科学基金(2010B480004)和河南大学自然科学基金(2008YBZR018); 作者联系地址：河南省光伏材料重点实验室，河南大学物理与电子学院，河南，开封 475004; Author's Address: Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, Henan, China; 通讯作者E-mail：wfzhang@henu.edu.cn
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58434]
专题	2011年第17卷
推荐引用方式 GB/T 7714	白莹,杨觉明,卿春波,等. 包覆碳掺CoLiFePO4正极的电化学性能研究, Electrochemical performances of C-coating and Co-doping LiFePO4[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9806.shtml,2011.
APA	白莹.,杨觉明.,卿春波.,张伟风.,BAI Ying.,...&ZHANG Wei-Feng.(2011).包覆碳掺CoLiFePO4正极的电化学性能研究.http://electrochem.xmu.edu.cn/CN/abstract/abstract9806.shtml.
MLA	白莹,et al."包覆碳掺CoLiFePO4正极的电化学性能研究".http://electrochem.xmu.edu.cn/CN/abstract/abstract9806.shtml (2011).