Preparation of phase pure and well-crystallized Li4Ti5O12 nanoparticles by precision control of starting mixture and calcining at lowest possible temperatures

Abe, Yuichi; Matsui, Eitaro; Senna, Mamoru

doi:10.1016/j.jpcs.2006.12.035

Cited by 30 publications

(17 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different lithium sources lead to small differences in decomposition temperatures of solid-state reaction (DTSSR). Inorganic lithium sources include Li 2 CO 3 (DTSSR >460°C) [16,17], LiOH (DTSSR >500°C) [18], and LiNO 3 (DTSSR >560°C) [19]. Organic lithium compounds include LiAc (>470°C) [20] and LiOAc (>320°C) [21].…”

Section: Resultsmentioning

confidence: 99%

One-step solid-state synthesis of Li4Ti5O12/C with low in situ carbon content and high rate cycling performance

Zhang

Zhang²,

et al. 2015

J Solid State Electrochem

View full text Add to dashboard Cite

Spinel Li 4 Ti 5 O 12 /C composites were obtained from C 3 H 5 O 3 Li and TiO 2 via one-step solid-state reaction without adding extra carbon sources. This facile synthesis method can reduce production steps, contribute to uniform mixing of raw materials, and get homogenous particles. As-prepared Li 4 Ti 5 O 12 /C composites with low in situ carbon content of only 1.81 wt% show significant improvement in discharge capacity and high rate cycling performance comparable to Li 4 Ti 5 O 12 /C in previous studies, showing that low in situ carbon content in the as-prepared Li 4 Ti 5 O 12 /C composites perfectly balances discharge capacity and high rate cycling performance. At 1 C and 10 C, the initial discharge capacity is 168.0 and 140.0 mAh g −1 with capacity retention of 94.4 and 90.2 % after 200 cycles, respectively. Even at 20 C, the discharge capacity is 133.3 mAh g −1 at 1st cycle and 109.8 mAh g −1 at 50th cycle. It demonstrated promising potential as an anode material in lithium-ion batteries with excellent discharge capacity and high rate cycling performance.

show abstract

Section: Resultsmentioning

confidence: 99%

One-step solid-state synthesis of Li4Ti5O12/C with low in situ carbon content and high rate cycling performance

Zhang

Zhang²,

et al. 2015

J Solid State Electrochem

View full text Add to dashboard Cite

show abstract

“…Heat treatments at 800 and 900 o C show complete LTO peaks. The phase transition from precursors to LTO occurs between 700 and 800 o C [10].…”

Section: Resultsmentioning

confidence: 99%

Effect of heat treatment on electrochemical characteristics of spinel lithium titanium oxide

Hong

Cho

et al. 2010

Korean J. Chem. Eng.

View full text Add to dashboard Cite

Spinel structured LTO (lithium titanium oxide), Li 4 Ti 5 O 12 , materials have gained renewed interest in electrodes for lithium-ion batteries. Powder precursors were mixed by HEBM (high energy-ball mill) and Li 4 Ti 5 O 12 was formed by calcinations at high temperature. The influence of excess Li on the structural characteristics of lithium titanium oxide was investigated. According to the XRD and SEM analysis, uniformly distributed Li 4 Ti 5 O 12 particles were synthesized. Li 4 Ti 5 O 12 had different characteristics due to the precursor sizes and the heat treatment temperatures. LTO from micro TiO 2 showed the highest discharge capacity at 750 o C for 12 h. LTO from nano TiO 2 showed the highest discharge capacity at 700 o C for 12 h. Lithium-ion battery with Li 4 Ti 5 O 12 anode and lithium metal cathode showed the capacity of 170 mAh/g at 1.0-3.0 V.

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

Preparation of phase pure and well-crystallized Li4Ti5O12 nanoparticles by precision control of starting mixture and calcining at lowest possible temperatures

Cited by 30 publications

References 18 publications

One-step solid-state synthesis of Li4Ti5O12/C with low in situ carbon content and high rate cycling performance

One-step solid-state synthesis of Li4Ti5O12/C with low in situ carbon content and high rate cycling performance

Effect of heat treatment on electrochemical characteristics of spinel lithium titanium oxide

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

Contact Info

Product

Resources

About