Nano-particle Li4Ti5O12 spinel as electrode for electrochemical generators

Guerfi, Abdelbast; Sevigny, Sonia; Lagacé, Marin; Hovington, Pierre; Kinoshita, K.; Zaghib, Karim

doi:10.1016/s0378-7753(03)00131-9

Cited by 191 publications

(93 citation statements)

References 9 publications

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“…[ 51 ] The initial charge-discharge profi les for the Li 4 Ti 5 O 12 , Li 4 Ti 5 O 12 -TiO 2 , and Li 4 Ti 5 O 12 -TiO 2 -C nanocomposite electrodes at the 0.5 to 10 C charge/discharge rates are shown in Figure 6 (a-c) . Initial discharge capacities were measured to be 147, 167, and 166 mAh g − 1 at 0.5 C for the Li 4 12 -TiO 2 -C electrodes, respectively. The discharge capacity decreases for all samples with increasing current density, and some irreversible capacity loss was observed in the fi rst cycle, which might be due to irreversible electrochemical decomposition of the electrolyte or impurity phase over the Li 4 Ti 5 O 12 /TiO 2 surface.…”

Section: Full Papermentioning

confidence: 99%

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li₄Ti₅O₁₂‐TiO₂: A Nanocomposite Anode Material for Li‐Ion Batteries

Rahman

Wang

Hassan

et al. 2011

Advanced Energy Materials

289

150

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This work introduces an effective, inexpensive, and large‐scale production approach to the synthesis of a carbon coated, high grain boundary density, dual phase Li4Ti5O12‐TiO2 nanocomposite anode material for use in rechargeable lithium‐ion batteries. The microstructure and morphology of the Li4Ti5O12‐TiO2‐C product were characterized systematically. The Li4Ti5O12‐TiO2‐C nanocomposite electrode yielded good electrochemical performance in terms of high capacity (166 mAh g−1 at a current density of 0.5 C), good cycling stability, and excellent rate capability (110 mAh g−1 at a current density of 10 C up to 100 cycles). The likely contributing factors to the excellent electrochemical performance of the Li4Ti5O12‐TiO2‐C nanocomposite could be related to the improved morphology, including the presence of high grain boundary density among the nanoparticles, carbon layering on each nanocrystal, and grain boundary interface areas embedded in a carbon matrix, where electronic transport properties were tuned by interfacial design and by varying the spacing of interfaces down to the nanoscale regime, in which the grain boundary interface embedded carbon matrix can store electrolyte and allows more channels for the Li+ ion insertion/extraction reaction. This research suggests that carbon‐coated dual phase Li4Ti5O12‐TiO2 nanocomposites could be suitable for use as a high rate performance anode material for lithium‐ion batteries.

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Section: Full Papermentioning

confidence: 99%

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li₄Ti₅O₁₂‐TiO₂: A Nanocomposite Anode Material for Li‐Ion Batteries

Rahman

Wang

Hassan

et al. 2011

Advanced Energy Materials

289

150

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“…In order to improve the electrochemical performance of the Li 4 Ti 5 O 12 anode, extensive works concentrated on forming nanoparticles [14][15][16][17], doping [18][19][20][21][22][23] with metal cations and composing with carbon or metal powders [21,[24][25][26][27][28][29]. The formation of nanoparticles can reduce the Li-ion diffusion path as well as provide a large contact area between the nanoparticles.…”

Section: -10mentioning

confidence: 99%

Properties of Li4Ti5O12 as an anode material in non-flammable electrolytes

Kurc

Swiderska‐Mocek

2013

J Appl Electrochem

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Two non-flammable electrolytes 1 M LiPF 6 in sulfolane (TMS) ? 5 wt% VC and 0.7 M lithium bis(trifluoromethanesulphonyl)imide (LiNTf 2 ) in N-methyl-Npropylpyrrolidinium bis(trifluoromethanesulphonyl)imide (MePrPyrNTf 2 ) ? 10 wt% gamma-butyrolactone (GBL) were tested with Li 4 Ti 5 O 12 (LTO) as highly promising anode material for application in lithium-ion batteries. The results were compared for the titanium anode in the classic electrolyte: 1 M LiPF 6 in propylene carbonate ? dimethyl carbonate (PC ? DMC, 1:1). The performances of LTO/ electrolyte/Li cell were tested using cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge and scanning electron microscopy (SEM). SEM images of electrodes and those taken after electrochemical cycling showed changes which may be interpreted as a result of solid-state interface formation. Good charge/discharge capacities and low capacity loss at medium C rates preliminary cycling was obtained for the Li 4 Ti 5 O 12 anode. For LTO/1 M LiPF 6 in PC ? DMC/Li system, the best capacity was obtained at C/10 and C/3 (145 and 154 mAh g -1 , respectively). In the case of a system working on the basis of a TMS solution (1 M LiPF 6 in TMS ? 5 wt% VC) the best value was obtained at a C/5 current and an average of more than 150 mAh g -1 (86 % of theoretical capacity). For the 0.7 M LiNTf 2 in MePrPyrNTf 2 ? 10 wt% GBL electrolyte, the highest capacitance value (at C/20 current) of about 150 mAh g -1 was observed. The 1 M LiPF 6 in TMS ? 5 wt% VC and 0.7 M LiNTf 2 in MePrPyrNTf 2 ? 10 wt% GBL electrolytes had a relatively broad thermal stability range and no decomposition peak was observed below 150°C.

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“…However, the power performance of Li 4 Ti 5 O 12 is greatly limited by its low electronic conductivity (ca. 10 −13 S cm −1 ) and moderate Li diffusion coefficient (10 −8 -10 −11 cm 2 s −1 ) [20][21][22][23][24]. In order to improve the electrochemical performance of the Li 4 Ti 5 O 12 anode, extensive works concentrated on forming nanoparticles [25][26][27][28], doping [29][30][31][32][33][34] with metal cations, and composing with carbon or metal powders [35,36].…”

Section: Introductionmentioning

confidence: 99%

Li4Ti5O12/TiO2-SiO2 and Li4Ti5O12/SiO2 composites as an anode material for Li-ion batteries

Kurc

2017

Ionics

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The commercial electrode Li 4 Ti 5 O 12 was modified with SiO 2 and TiO 2 -SiO 2 . All samples were characterized by scanning electron microscope (SEM), particle size distribution (PSD), porous structure parameters (low-temperature N 2 sorption), galvanostatic charge-discharge test, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Appropriate amount of TiO 2 -SiO 2 and SiO 2 could effectively reduce the electrochemical polarization of Li 4 Ti 5 O 12 and enhance electrochemical reaction kinetics of Li + insertion/ deinsertion. Moreover, Li 4 Ti 5 O 12 /TiO 2 -SiO 2 provides a high rate capacity of 165 mAh g −1 at the high current density of 0.5 C. To investigate cycle stability of the electrode materials at high current density, the measurements were directly carried out at 3 C. SEM images of the LTO/TiO 2 -SiO 2 , LTO, and LTO/SiO 2 particles after galvanostatic charging/discharging show that they were coated by a uniform layer (the SEI layer).

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Nano-particle Li4Ti5O12 spinel as electrode for electrochemical generators

Cited by 191 publications

References 9 publications

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li₄Ti₅O₁₂‐TiO₂: A Nanocomposite Anode Material for Li‐Ion Batteries

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li₄Ti₅O₁₂‐TiO₂: A Nanocomposite Anode Material for Li‐Ion Batteries

Properties of Li4Ti5O12 as an anode material in non-flammable electrolytes

Li4Ti5O12/TiO2-SiO2 and Li4Ti5O12/SiO2 composites as an anode material for Li-ion batteries

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Nano-particle Li4Ti5O12 spinel as electrode for electrochemical generators

Cited by 191 publications

References 9 publications

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li4Ti5O12‐TiO2: A Nanocomposite Anode Material for Li‐Ion Batteries

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li4Ti5O12‐TiO2: A Nanocomposite Anode Material for Li‐Ion Batteries

Properties of Li4Ti5O12 as an anode material in non-flammable electrolytes

Li4Ti5O12/TiO2-SiO2 and Li4Ti5O12/SiO2 composites as an anode material for Li-ion batteries

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Product

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Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li₄Ti₅O₁₂‐TiO₂: A Nanocomposite Anode Material for Li‐Ion Batteries

Amorphous Carbon Coated High Grain Boundary Density Dual Phase Li₄Ti₅O₁₂‐TiO₂: A Nanocomposite Anode Material for Li‐Ion Batteries