Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries

doi:10.3866/PKU.WHXB201207043

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	Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries
	Wang Zhen-Po 1; Liu Wen 2; Wang Yue 3; Zhao Chun-Song 4; Zhang Shu-Ping 4; Chen Ji-Tao 2; Zhou Heng-Hui 2; Zhang Xin-Xiang 2
刊名	ACTA PHYSICO-CHIMICA SINICA
	2012-09-01
卷号	28 期号:9 页码:2084-2090
关键词	Lithium Iron Phosphate Co-doping Rate Capacity Power Battery Energy Storage Battery
ISSN号	1000-6818
DOI	10.3866/PKU.WHXB201207043
英文摘要	Mg and Ti ions co-doped (Li0.98Mg0.01)(Fe0.98Ti0.01)PO4/C cathode material for lithium-ion batteries was prepared by a solid-state method under N-2 atmosphere. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and galvanostatic charge-discharge test. Results indicated that Mg and Ti ions co-doping remarkably improved the electrochemical performance of LiFePO4, including rate capacity, temperature behavior, and cycling stability. Discharge capacities of 154.7 and 146.9 mAh.g(-1) were obtained at the rates of 0.2C and 1C for half-cell tests, respectively. For 60 Ah full-cell tests, 100% of 1C capacity was maintained even at 3C rate, 89.7% and 63.1% of initial capacity at room temperature were retained at 0 and -20 degrees C, respectively. 89% capacity retention remained after 2000 cycles at room temperature, presenting excellent cycle stability. This investigation suggests that the present co-doping material and the resulting battery possess large discharge capacity and excellent cycling performance, making it applicable in electric vehicle (EV)/hybrid electric vehicle (HEV) and energy storage systems on a large scale.
语种	英语
出版者	PEKING UNIV PRESS
WOS记录号	WOS:000308627200011
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/47949]
专题	中国科学院化学研究所
通讯作者	Wang Zhen-Po
作者单位	1.Beijing Inst Technol, Natl Engn Lab Elect Vehicles, Beijing 100081, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 3.Inst Chem Def PLA, Beijing 102205, Peoples R China 4.Pulead Technol Ind Co LTD, Beijing 102200, Peoples R China
推荐引用方式 GB/T 7714	Wang Zhen-Po,Liu Wen,Wang Yue,et al. Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(9):2084-2090.
APA	Wang Zhen-Po.,Liu Wen.,Wang Yue.,Zhao Chun-Song.,Zhang Shu-Ping.,...&Zhang Xin-Xiang.(2012).Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries.ACTA PHYSICO-CHIMICA SINICA,28(9),2084-2090.
MLA	Wang Zhen-Po,et al."Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries".ACTA PHYSICO-CHIMICA SINICA 28.9(2012):2084-2090.