2021
DOI: 10.1002/aenm.202003270
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Ultrathin [110]‐Confined Li4Ti5O12 Nanoflakes for High Rate Lithium Storage

Abstract: Improving the high‐rate performance of spinel lithium titanate (Li4Ti5O12, LTO) is one of the critical requirements to promote its practical application in Li‐ion batteries (LIBs). Herein, the possible Li+ ion diffusion routes in LTO are theoretically analyzed and compared by computational investigation. The calculations show that the most feasible diffusion path for Li+ ions is along the [110] direction indicated by the lowest energy barrier. Inspired by this prediction, ultrathin [110]‐confined LTO nanoflake… Show more

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Cited by 26 publications
(16 citation statements)
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“…[1][2][3][4][5] Energy density and power density are two of their most important parameters and should be well-balanced for specific application conditions. [6][7][8][9][10] Herein, TiNb 2 O 7 was employed as a model system to investigate their relationship due to the following considerations: As a typical Wadsley-Roth research. [26][27][28][29] The porosity, compaction density, thickness, and mass loading are the main parameters for electrodes with given active materials, binder, and conductive additive, as well as electrode conductivity and electrode resistivity, which together can show the characteristics of electrode microstructures.…”
Section: Introductionmentioning
confidence: 99%
“…[1][2][3][4][5] Energy density and power density are two of their most important parameters and should be well-balanced for specific application conditions. [6][7][8][9][10] Herein, TiNb 2 O 7 was employed as a model system to investigate their relationship due to the following considerations: As a typical Wadsley-Roth research. [26][27][28][29] The porosity, compaction density, thickness, and mass loading are the main parameters for electrodes with given active materials, binder, and conductive additive, as well as electrode conductivity and electrode resistivity, which together can show the characteristics of electrode microstructures.…”
Section: Introductionmentioning
confidence: 99%
“…
considered as a promising alternative to graphite anode, the energy density of Li 4 Ti 5 O 12 is severely limited by its low theoretical specific capacity (175 mAh g -1 ) and high lithiation potential (1.5 V vs Li + / Li) [4][5][6][7] . Low lithiation potential (0.2 V vs Li + /Li) of silicon anode with the highest specific capacity (3579 mAh g -1 ) could inevitably result in serious lithium dendrites in fast charging process.
…”
mentioning
confidence: 99%
“…Compared to the diffusion barrier of Li + ions along different paths in Li 4 Ti 5 O 12 , the researchers found that the only feasible and continuous diffusion path is along the [110] direction. 127 Li 4 Ti 5 O 12 nanosheets with [110]-conned growth had preferred ion diffusion channels that facilitated the diffusion of Li + ions through the channels along this direction. However, reasonably synthesizing targeted LTO on a large scale remains a challenge.…”
Section: Improvement In the Anodementioning
confidence: 99%