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A novel Li4Ti5O12-based high-performance lithium-ion electrode at elevated temperature
Alternative TitleJ. Mater. Chem. A
Guo, Junling1; Zuo, Wenhua2; Cai, Yingjun1; Chen, Shimou1; Zhang, Suojiang1; Liu, Jinping2
2015
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume3Issue:9Pages:4938-4944
AbstractDestructive gas generation with associated swelling has been the major challenge for the large-scale application of Li4Ti5O12 (LTO)-based lithium-ion batteries (LIBs), especially when the LIBs work at high temperature. Here we report a new kind of Li4Ti5O12-rutile TiO2 (LTO-RTO) hybrid nanowire array electrode that can be cycled at elevated temperatures. After assembling the optimized LTO-RTO hybrid array as the anode and commercial LiCoO2 (LCO) film as the cathode, the obtained lithium-ion full cell exhibits outstanding performance with an ultralong lifetime at 60 degrees C (similar to 83.6% of its initial capacity can be retained at the end of 500 cycles at similar to 2.5 C). Based on comparative experiments, we proposed a reasonable mechanism and, further, provided a reasonable verdict about the gas generation: the H-2 and CO generation from the LTO electrode are significantly associated with the (111) facet. The presence of more LTO (400) planes than (111) ones in the optimized LTO-RTO electrode is the essential reason for long-term cycling at 60 degrees C without gassing. Our work implies that an ability to tune the crystal facet orientation of electrode nanostructures will be meaningful in the practical design of next-generation high-stability LIBs.; Destructive gas generation with associated swelling has been the major challenge for the large-scale application of Li4Ti5O12 (LTO)-based lithium-ion batteries (LIBs), especially when the LIBs work at high temperature. Here we report a new kind of Li4Ti5O12-rutile TiO2 (LTO-RTO) hybrid nanowire array electrode that can be cycled at elevated temperatures. After assembling the optimized LTO-RTO hybrid array as the anode and commercial LiCoO2 (LCO) film as the cathode, the obtained lithium-ion full cell exhibits outstanding performance with an ultralong lifetime at 60 degrees C (similar to 83.6% of its initial capacity can be retained at the end of 500 cycles at similar to 2.5 C). Based on comparative experiments, we proposed a reasonable mechanism and, further, provided a reasonable verdict about the gas generation: the H-2 and CO generation from the LTO electrode are significantly associated with the (111) facet. The presence of more LTO (400) planes than (111) ones in the optimized LTO-RTO electrode is the essential reason for long-term cycling at 60 degrees C without gassing. Our work implies that an ability to tune the crystal facet orientation of electrode nanostructures will be meaningful in the practical design of next-generation high-stability LIBs.
KeywordBattery Electrodes Spinel li4+xti5o12 Carbon Nanotubes Doped Li4ti5o12 Rate Capability Energy-storage Gas Generation Nanowire Array Anode Material Mechanism
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1039/c4ta05660d
URL查看原文
Indexed BySCI
Language英语
WOS KeywordBATTERY ELECTRODES ; SPINEL LI4+XTI5O12 ; CARBON NANOTUBES ; DOPED LI4TI5O12 ; RATE CAPABILITY ; ENERGY-STORAGE ; GAS GENERATION ; NANOWIRE ARRAY ; ANODE MATERIAL ; MECHANISM
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000349997000023
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11735
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Inst Proc Engn,Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Cent China Normal Univ, Dept Phys, Inst Nanosci & Nanotechnol, Wuhan 430079, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Guo, Junling,Zuo, Wenhua,Cai, Yingjun,et al. A novel Li4Ti5O12-based high-performance lithium-ion electrode at elevated temperature[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(9):4938-4944.
APA Guo, Junling,Zuo, Wenhua,Cai, Yingjun,Chen, Shimou,Zhang, Suojiang,&Liu, Jinping.(2015).A novel Li4Ti5O12-based high-performance lithium-ion electrode at elevated temperature.JOURNAL OF MATERIALS CHEMISTRY A,3(9),4938-4944.
MLA Guo, Junling,et al."A novel Li4Ti5O12-based high-performance lithium-ion electrode at elevated temperature".JOURNAL OF MATERIALS CHEMISTRY A 3.9(2015):4938-4944.
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