Effects of preparation conditions on the electrochemical and morphological characteristics of Li4Ti5O12 powders prepared by spray pyrolysis

Ju, Seo Hee; Kang, Yun Chan

doi:10.1016/j.jpowsour.2008.09.107

Cited by 48 publications

(24 citation statements)

References 8 publications

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“…5(a). Accordingly, collectively referring to the aforementioned results, compared to the hybrid super capacitor prepared at 150 ℃, the hybrid super capacitor prepared at 180 ℃ using the hydrothermal synthesis method exhibits that the diffusion distance of Li + decreases and the diffusion rate is enhanced due to the increased nanowire, and low electrochemical reaction resistance is generated during a discharge process due to a high non-specific area [13][14][15]. Figure 6 is a graph showing the discharge capacity according to C-rate.…”

Section: Resultsmentioning

confidence: 83%

“…Also, it can be verified that the capacity measured at 30 cycles has decreased by (a) 29.19% and (b) 23.75% compared to the initial capacity, respectively. Accordingly, compared to the hybrid super capacitor prepared at 150 ℃, it can be ascertained that the hybrid super capacitor prepared at 180 ℃ using the hydrothermal synthesis method has excellent charge/discharge retention and cycle characteristics [15][16][17]. …”

Section: Resultsmentioning

confidence: 99%

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Preparation and characterization of Li4Ti5O12 synthesized using hydrogen titanate nanowire for hybrid super capacitor

Kim¹,

Yoon²

2013

J Adv Ceram

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Abstract:The electrical characteristics of hybrid super capacitor were evaluated by synthesizing LTO (Li 4 Ti 5 O 12 ) using TiO 2 having a hydrogen titanate nanowire form. Preparation of the hydrogen titanate nanowire was implemented by using TiO 2 having size of 60 nm and NaOH, and performing synthesis at 70 ℃ for 6 h with a sonochemical method. LTO compound was synthesized at 150 ℃ for 36 h and at 180 ℃ for 36 h respectively by using the hydrogen titanate nanowire and LiOH·H 2 O as starting materials with a hydrothermal method. The final LTO compound was synthesized at 700 ℃ for 6 h using a solid-state method. As a result of manufacturing the hybrid super capacitor using LTO synthesized at 180 ℃ for 36 h with the hydrothermal method, a capacity of 198 mA·h/g has been achieved compared to a theoretical capacity of 172 mA·h/g of existing LTO, and thus, the capacity has been increased by about 13%. Further, such excellent cycle performance has ensured its possibility as a high-capacity capacitor.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of Li4Ti5O12 synthesized using hydrogen titanate nanowire for hybrid super capacitor

Kim¹,

Yoon²

2013

J Adv Ceram

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show abstract

“…However, LTO shows low Li ion diffusion coefficient and poor electrical conductivity [124,125]. Many studies have demonstrated that these disadvantages can be resolved by a combination of reducing the LTO bulk into nanoscale and with a carbon coating [126,127]. Electrospinning is a low-cost and simple solution to prepare 1D C/LTO composite materials and it gives a very uniform decoration of carbon throughout the LTO nanofibers [128].…”

Section: Ti-based Oxide/carbon Hybrid With the Insertion Reaction Mecmentioning

confidence: 99%

Electrospun carbon-based nanostructured electrodes for advanced energy storage – A review

Chen

Huang

et al. 2016

Energy Storage Materials

187

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“…Recently, spinel structured Li 4 Ti 5 O 12 (LTO) has attracted much interest due to its potential application as an anode material for high-rate lithium-ion batteries [10][11][12]. This material has a stable charge/discharge plateau voltage at approximately 1.55 V (vs. Li + /Li), which can avoid the reduction of organic electrolyte and deposition of metallic lithium, thus making batteries more safe.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electrochemical performance of nanoporous Li4Ti5O12 anode material for lithium-ion batteries

Shao

Luo

et al. 2011

J Solid State Electrochem

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Nanoporous Li 4 Ti 5 O 12 (N-LTO) was prepared by sol-gel method using monodisperse polystyrene spheres as a template and followed by calcination process. The asprepared N-LTO has a spinel structure, large special surface area, and nanoporous structure with the pore average diameter of about 100 nm and wall thickness of 50 nm. Electrochemical experiments show that N-LTO exhibits a high initial discharge capacity of 189 mAh g −1 at 0.1 C rate cycled between 0.5 and 3.0 V and excellent capacity retention of 170 mAh g −1 after 100 cycles. EIS and CV analysis show that N-LTO has a higher mobility for Li + diffusion and a higher exchange current density, indicating an improved electrochemical performance. It is believed that the nanoporous structure has a larger electrode/electrolyte contact area, resulting in better electrochemical properties at high charge/discharge rates.

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Effects of preparation conditions on the electrochemical and morphological characteristics of Li4Ti5O12 powders prepared by spray pyrolysis

Cited by 48 publications

References 8 publications

Preparation and characterization of Li4Ti5O12 synthesized using hydrogen titanate nanowire for hybrid super capacitor

Preparation and characterization of Li4Ti5O12 synthesized using hydrogen titanate nanowire for hybrid super capacitor

Electrospun carbon-based nanostructured electrodes for advanced energy storage – A review

Synthesis and electrochemical performance of nanoporous Li4Ti5O12 anode material for lithium-ion batteries

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