Wet-chemical synthesis of spinel Li4Ti5O12 as a negative electrode

Jena, Kumar Debajyoti; Song, Xin; Lim, Kok‐Geng; Xu, Ying; Li, Lü; Cao, Peng

doi:10.1007/s42247-022-00424-5

Cited by 2 publications

(3 citation statements)

References 53 publications

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“…The larger hexagonal and rice-shaped particles are presumably rutile, as illustrated in Figure c. This observation is consistent with the findings of our previous work using the same synthesis method . The surface of each particle appears very smooth.…”

Section: Resultssupporting

confidence: 91%

“…Figure a schematically represents the synthesis procedure for preparing the Li-brookite anode using the two-step chemical lithiation-calcination method . The addition of TiCl 4 to THF typically leads to the formation of an adduct, TiCl 4 ·2THF, as documented in prior literature. , This formation is indicated by a distinct change in the color of the solution, which turns it pale yellow.…”

Section: Resultsmentioning

confidence: 88%

“…This observation is consistent with the findings of our previous work using the same synthesis method. 33 The surface of each particle appears very smooth. The structure of Li-brookite, consisting of nanosheets and nanoneedles, establishes a highly accessible environment for the electrolyte, which is essential for minimizing interface contact resistance between the electrodes and electrolyte.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

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Impact of Lithium Incorporation on the Structure and Electrochemical Performance of Brookite Anode

Jena,

Lim,

et al. 2024

Energy Fuels

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This study presents the synthesis, characterization, and electrochemical performance of nanostructured Li-brookite, a promising anode material for lithium-ion batteries. Nanostructured Li-brookite heterostructures, combining amorphous and crystalline characteristics, were successfully synthesized via a two-step chemical lithiation-calcination method. The distorted orthorhombic structure of Li-brookite, influenced by Li doping, was observed. Morphological examination reveals intricate flowerlike and nanoneedle-shaped particles. Nanostructuring enhances the active surface area and provides a short ion-diffusion path, while the amorphous−crystalline−amorphous architecture establishes an open framework and accelerates lithiation kinetics. These features collectively enhance electrochemical performance, primarily through intercalation pseudocapacitance, demonstrating rapid charge transfer and high energy density. Notably, Li-brookite exhibits impressive initial specific capacity, robust high-rate performance at various current rates, and excellent cycling stability and Coulombic efficiency. These findings underscore the potential of Li-brookite as a promising anode material in advanced LIB applications.

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Section: Resultssupporting

confidence: 91%