Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes

doi:10.2320/matertrans.MK201607

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes
	Guo, QJ; Wang, Q; Chen, G; Shen, M; Li, B
刊名	MATERIALS TRANSACTIONS
	2017
卷号	58 期号:3 页码:383-389
关键词	Molten Salt Metallic Compound Lithium Titanate Lithium-ion Battery
ISSN号	1345-9678
DOI	10.2320/matertrans.MK201607
文献子类	期刊论文
英文摘要	In order to systematically characterize the effects of ion doping on Li4Ti5O12 (LTO) through the molten salt method, different metallic compounds with varying ionic radii doped into LTO were investigated. The results show that doped ions (Al3+, Ni2+, Fe2+, Fe3+ and F-) with similar ionic radius as Li+, Ti4+ or O2- ions can enter into LTO, which leads to smaller particle size than pure LTO, therefore, increasing the specific surface area and shortening Li+ transfer path of LTO. However, La3+ with a much larger ionic radius cannot enter into LTO. Ion doping can enhance the intrinsic conductivity of LTO, thus improving the electrochemical performance of LTO. As the ionic radii of Fe2+ and Fe3+ are the closest to those of Li+ and Ti4+, Fe3O4 doped LTO exhibits the best electrochemical performance, an excellent first discharge capacity of 269.3 mAh.g(-1) at the 0.15 degrees C, good high-rate capability (123.4 mAh.g(-1) at 10 degrees C); even after 300 discharge/charge cycles, the discharge capacity is 141.1 mAh.g(-1), gives an excellent cycle performance with 12.4% loss of capacity at 1 degrees C rate. Due to these factors, Fe3O4 is the most suitable metallic compound doped in LTO via molten salt method.
语种	英语
WOS记录号	WOS:000398132300015
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/27387]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Guo, QJ,Wang, Q,Chen, G,et al. Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes[J]. MATERIALS TRANSACTIONS,2017,58(3):383-389.
APA	Guo, QJ,Wang, Q,Chen, G,Shen, M,&Li, B.(2017).Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes.MATERIALS TRANSACTIONS,58(3),383-389.
MLA	Guo, QJ,et al."Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes".MATERIALS TRANSACTIONS 58.3(2017):383-389.