Doping and surface modification enhance the applicability of Li4Ti5O12 microspheres as high-rate anode materials for lithium ion batteries

Chang‐Jian, Cai‐Wan; Ho, Bo-Cheng; Chung, Chuan-Kai; Chou, Jia-An; Chung, Chieh-Lin; Huang, Jen-Hsien; Huang, Jui-Hsiung; Hsiao, Yu-Sheng

doi:10.1016/j.ceramint.2018.09.110

Cited by 27 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…19,39,40 Three minor peaks at about 269, 345 and 754 cm −1 were also associated with the vibrations involved in the LTO structure. 19,41 The doping process did not significantly alter vibrational characteristics of the LTO structure. The samples synthesized with and without the participation of molten salt at 900°C were studied using the ESR spectra ( Figure 7B).…”

Section: Resultsmentioning

confidence: 92%

“…Three major Raman peaks centered at around 232, 431 and 672 cm −1 and can be regarded as the A 1g , E g and F 2g modes of vibration, which are related to symmetric stretching vibration of Ti‐O bands in TiO 6 octahedra, the bands in LiO 4 tetrahedra and the bending vibration of O‐Ti‐O bands, respectively 19,39,40 . Three minor peaks at about 269, 345 and 754 cm −1 were also associated with the vibrations involved in the LTO structure 19,41 . The doping process did not significantly alter vibrational characteristics of the LTO structure.…”

Section: Resultsmentioning

confidence: 93%

See 1 more Smart Citation

Chemically driven synthesis of Ti³⁺ self‐doped Li₄Ti₅O₁₂ spinel in molten salt

et al. 2020

View full text Add to dashboard Cite

Surface doping of Li 4 Ti 5 O 12 (LTO) with Ti 3+ ions is an effective way to enhance its electrochemical properties for lithium ion batteries (LIBs). Herein, a molten salt approach was reported to synthesize Ti 3+ self-doped LTO powder. The reaction mechanism and the role of molten salt for the synthesis have been systemically discussed. Finally, electrochemical performance of the LTO powder was preliminarily evaluated as anode material of LIBs. The molten salt accelerated the mass transportation for the formation of LTO by transferring a solid diffusion to the diffusion of ions in a liquid media. Self-doping of Ti 3+ ions on the surface of LTO particles was achieved by controlling equilibriums of chemical reactions in the reactor. Electrochemical performance of the LTO powders was effectively promoted by doping Ti 3+ ions on the surface. The discharge capacity of the Ti 3+ self-doped LTO powder prepared at 850°C was 171 mAhg −1 , and the capacity dacayed 9.9% after 200 cycles at a rate of 0.5 C. K E Y W O R D S kinetics, Li 4 Ti 5 O 12 , Li-ion batteries, molten salt, Ti 3+ doping 754 | XIE Et al.

show abstract

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 93%

Chemically driven synthesis of Ti³⁺ self‐doped Li₄Ti₅O₁₂ spinel in molten salt

et al. 2020

View full text Add to dashboard Cite

show abstract

“…To further explore the practical application of 2-HPC, we also fabricated LICs based on 2-HPC and LTO as cathode and anode, respectively. The LTO materials were prepared according to our previous report [46]. As we all know, in this configuration, the hybrid LICs can combine the advantages of both a lithium ion battery and a supercapacitor and exhibit relatively high energy and power densities [47,48].…”

Section: Resultsmentioning

confidence: 99%

Bio-Phenolic Resin Derived Porous Carbon Materials for High-Performance Lithium-Ion Capacitor

Cho

Chang‐Jian

et al. 2022

Polymers

Self Cite

View full text Add to dashboard Cite

In this article, hierarchical porous carbon (HPC) with high surface area of 1604.9 m2/g is prepared by the pyrolysis of rubberwood sawdust using CaCO3 as a hard template. The bio-oil pyrolyzed from the rubber sawdust, followed by the polymerization reaction to form resole phenolic resin, can be used as a carbon source to prepare HPC. The biomass-derived HPC shows a three-dimensionally interconnected morphology which can offer a continuous pathway for ionic transport. The symmetrical supercapacitors based on the as-prepared HPC were tested in 1.0 M tetraethylammonium tetrafluoroborate / propylene carbonate electrolyte. The results of electrochemical analysis show that the HPC-based supercapacitor exhibits a high specific capacitance of 113.3 F/g at 0.5 A/g with superior rate capability and cycling stability up to 5000 cycles. Hybrid lithium-ion capacitors (LICs) based on the HPC and Li4Ti5O12 (LTO) were also fabricated. The LICs have a maximum energy density of 113.3 Wh/kg at a power density of 281 W/kg. Moreover, the LIC also displays a remarkable cycling performance with a retention of 92.8% after 3000 cycles at a large current density of 0.75 A/g, suggesting great potential application in the energy storage of the LIC.

show abstract

“…In LIBs, anode materials used for the storage and release of energy are also important parts. Among numerous anode materials, carbon materials are traditionally used for anode construction of LIBs, which have already been commercialized, whereas they still do not meet the requirement of high safety. − Therefore, the development of novel anode materials for LIBs with high safety is highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Lithium Storage Performances of the Li₄Ti₅O₁₂Anode by Introducing the CuV₂O₆Phase

Wang

Cao

Zhao

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The low electronic conductivity of spinel-structured Li 4 Ti 5 O 12 could be improved by introducing CuV 2 O 6 . Herein, several Li 4 Ti 5 O 12 /CuV 2 O 6 composites with different CuV 2 O 6 contents have been successfully prepared by a facile liquid-phase dispersion technique. The amount of CuV 2 O 6 in composites is shown to affect the particle size and electrochemical performances of Li 4 Ti 5 O 12 . The Li 4 Ti 5 O 12 /CuV 2 O 6 composite prepared with a 5 wt % CuV 2 O 6 content (referred to as 5 wt % Li 4 Ti 5 O 12 /CuV 2 O 6 ) exhibits the best electrochemical performances among all the Li 4 Ti 5 O 12 /CuV 2 O 6composites. The initial discharge/charge capacities of the 5 wt % Li 4 Ti 5 O 12 /CuV 2 O 6 composite reach 241.1/199.8 mAh g −1 and retain at 136.8/135.7 mAh g −1 over 500 cycles at 30 mA g −1 between 1.0 and 3.0 V. In addition, initial discharge/charge capacities of the 5 wt % Li 4 Ti 5 O 12 /CuV 2 O 6 composite amount to 129.8/90.5 mAh g −1 even at 1200 mA g −1 with maintained discharge/charge capacities of 71.1/71.1 mAh g −1 over 2500 cycles, which are superior to the pristine Li 4 Ti 5 O 12 in all cases. The detailed electrode kinetic analysis reveals that the introduction of the CuV 2 O 6 phase can enhance the lithium-ion transferring rate and cycling stability of Li 4 Ti 5 O 12 . The enhanced lithium-storage mechanism of the 5 wt % Li 4 Ti 5 O 12 /CuV 2 O 6 composite is clarified by in situ X-ray diffraction (XRD) analysis. The acquired data confirms that in situ formation of small amounts of metallic Cu during discharge/charge processes highly enhance the electronic conductivity and decreases the charge−transfer resistance of Li 4 Ti 5 O 12 . In sum, the as-obtained 5 wt % Li 4 Ti 5 O 12 /CuV 2 O 6 composite has potential for future construction of high-rate and long-lifespan anode materials for Li-ion batteries. The work also provides an innovative route to improve electrochemical performances of Li 4 Ti 5 O 12 . KEYWORDS: Li-ion batteries, Li 4 Ti 5 O 12 /CuV 2 O 6 composites, anode materials, liquid-phase dispersion technique, enhanced lithium storage performances

show abstract

Doping and surface modification enhance the applicability of Li4Ti5O12 microspheres as high-rate anode materials for lithium ion batteries

Cited by 27 publications

References 44 publications

Chemically driven synthesis of Ti³⁺ self‐doped Li₄Ti₅O₁₂ spinel in molten salt

Chemically driven synthesis of Ti³⁺ self‐doped Li₄Ti₅O₁₂ spinel in molten salt

Bio-Phenolic Resin Derived Porous Carbon Materials for High-Performance Lithium-Ion Capacitor

Enhancing Lithium Storage Performances of the Li₄Ti₅O₁₂Anode by Introducing the CuV₂O₆Phase

Contact Info

Product

Resources

About

Doping and surface modification enhance the applicability of Li4Ti5O12 microspheres as high-rate anode materials for lithium ion batteries

Cited by 27 publications

References 44 publications

Chemically driven synthesis of Ti3+ self‐doped Li4Ti5O12 spinel in molten salt

Chemically driven synthesis of Ti3+ self‐doped Li4Ti5O12 spinel in molten salt

Bio-Phenolic Resin Derived Porous Carbon Materials for High-Performance Lithium-Ion Capacitor

Enhancing Lithium Storage Performances of the Li4Ti5O12Anode by Introducing the CuV2O6Phase

Contact Info

Product

Resources

About

Chemically driven synthesis of Ti³⁺ self‐doped Li₄Ti₅O₁₂ spinel in molten salt

Chemically driven synthesis of Ti³⁺ self‐doped Li₄Ti₅O₁₂ spinel in molten salt

Enhancing Lithium Storage Performances of the Li₄Ti₅O₁₂Anode by Introducing the CuV₂O₆Phase