Sub-micrometric Li4−xNaxTi5O12 (0 ≤ x ≤ 0.2) spinel as anode material exhibiting high rate capability

Yi, Ting‐Feng; Yang, Shuang-Yuan; Li, Xiaoya; Yao, Jiafeng; Zhu, Yan‐Rong; Zhu, Rong

doi:10.1016/j.jpowsour.2013.08.005

Cited by 106 publications

(46 citation statements)

References 53 publications

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“…[14,17,18] Among those approaches, doping metal ions should be an effective and facile way to enhance the conductivity of a material directly and to change the Ti 4 + and Li + surrounding states, both of which would consequently improve the electrochemical properties of Li 4 Ti 5 O 12 . [19,20] Zhang successfully synthesized Ca-doped LTO. Among all the examples studied, Li 3.9 Ca 0.1 Ti 0.5 O 12 exhibited the best cycling performance and rate capability.…”

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confidence: 99%

Copper‐Doped Dual Phase Li₄Ti₅O₁₂–TiO₂ Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

et al. 2014

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Cu-doped Li4 Ti5 O12 -TiO2 nanosheets were synthesized by a facile, cheap, and environmentally friendly solution-based method. These nanostructures were investigated as an anode material for lithium-ion batteries. Cu doping was found to enhance the electron conductivity of the materials, and the amount of Cu doped controlled the crystal structure and content of TiO2 . In addition, the samples, which benefit from multiphases and doping, exhibited much improved capacity, cycle performance, and high rate capability over Cu-free Li4 Ti5 O12 -TiO2 . The discharge capacity of the 0.05 Cu-doped sample was 190 mAh g(-1) at 1C, and even 144 mAh g(-1) was obtained at 30C after 100 cycles. Moreover, after 500 cycles at 30C, the discharge capacity remained at approximately 130 mAh g(-1) . The excellent electrochemical performance of the cell demonstrated that Cu-doping was able to adjust and control the Li4 Ti5 O12 -TiO2 system appropriately.

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confidence: 99%

Copper‐Doped Dual Phase Li₄Ti₅O₁₂–TiO₂ Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

et al. 2014

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“…Donor doping with high valence elements substituting for Li [17,48,54,55]. In addition, the isovalent doping of Na for Li [56,57] [41,42,60]. In spinel Li 4 Ti 5 O 12 , the same Li ions take two different sites (8a and 16d) while the same 16d sites are occupied with two different ions (Li and Ti).…”

Section: Lattice Dopingmentioning

confidence: 99%

Lithium Titanate-Based Anode Materials

Zhao

2015

Rechargeable Batteries

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Graphitic carbon is the most widely used anode material in commercial Li-ion batteries due to its low lithiation potential, long cycle life, abundant resources and low cost. However, Li-ion batteries using graphite as anode material give rise to rate, safety and life problems. During lithium intercalation/deintercalation process, graphite undergoes a considerable volume change (*10 % [1]), which could cause particle cracking and even peeling off of anode film from the current collector, leading to gradual capacity degradation of the electrode [2,3]. Safety concerns arise when the cells experience fast charging, long-term cycling, or low temperature charging owing to the propensity of formation of lithium dendrites, which is induced by the low lithiation potential of the graphite anode (close to 0 V vs. Li/Li + ) and the low lithium ion diffusivity in the graphite lattice [4,5]. As an alternative anode material to carbon, Li 4 Ti 5 O 12 has been extensively studied for the potential use in large-scale Li-ion batteries. Li 4 Ti 5 O 12 shows stable charge/discharge platform at ca. 1.55 V versus Li/Li + , and possesses excellent cycling stability and unique safety characteristic owing to its negligible volume change and high redox potential upon Li-ion intercalation/deintercalation. However, coarse Li 4 Ti 5 O 12 exhibits poor rate performance because of its low electronic conductivity and sluggish lithium ion diffusivity [6,7]. In some cases, especially when aging at elevated temperature or cycling in a long-term regime, gas generation frequently occurs in Li 4 Ti 5 O 12 -based batteries [8]. In past decades, many efforts have been devoted to overcoming these problems and significant advancements have been achieved, which make Li 4 Ti 5 O 12 viable for practical application in batteries for various electrical energy storage, such as electric/hybrid electric/plug-in hybrid electric vehicles (EV/HEV/PHEV), grid load leveling, integration of renewable energy sources, etc.

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“…The improvement for the rate performance of Li 4 Ti 5 O 12 anode have been widely studied over the past decade, which can be roughly divided into two strategies. One strategy is to improve electron transfer by ion doping, surface modi cation, and/or incorporation of carbon [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] . The other approach is to reduce the electron and Li-ion diffusion lengths by producing nanostructured analogues of Li 4 Ti 5 O 12 itself [27][28][29][30][31] .…”

Section: Introductionmentioning

confidence: 99%

Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes

et al. 2017

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Sub-micrometric Li4−xNaxTi5O12 (0 ≤ x ≤ 0.2) spinel as anode material exhibiting high rate capability

Cited by 106 publications

References 53 publications

Copper‐Doped Dual Phase Li₄Ti₅O₁₂–TiO₂ Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

Copper‐Doped Dual Phase Li₄Ti₅O₁₂–TiO₂ Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

Lithium Titanate-Based Anode Materials

Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes

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Sub-micrometric Li4−xNaxTi5O12 (0 ≤ x ≤ 0.2) spinel as anode material exhibiting high rate capability

Cited by 106 publications

References 53 publications

Copper‐Doped Dual Phase Li4Ti5O12–TiO2 Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

Copper‐Doped Dual Phase Li4Ti5O12–TiO2 Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

Lithium Titanate-Based Anode Materials

Molten Salt Synthesis of Different Ionic Radii Metallic Compounds Doped Lithium Titanate Used in Li-Ion Battery Anodes

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Copper‐Doped Dual Phase Li₄Ti₅O₁₂–TiO₂ Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries

Copper‐Doped Dual Phase Li₄Ti₅O₁₂–TiO₂ Nanosheets as High‐Rate and Long Cycle Life Anodes for High‐Power Lithium‐Ion Batteries