Carbon-coated Li4Ti5O12 microspheres synthesized through solid-state reaction in a carbon reduction atmosphere for high-rate lithium-ion batteries

Ma, Guangqiang; Deng, Lin; Liu, Rong; Yuan, Ding; Li, Xuewu

doi:10.1007/s10008-022-05296-7

Cited by 1 publication

(1 citation statement)

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“…Additionally, the addition of Li 2 Ti 3 O 7 improves the specific capacity LTO/Li 2 Ti 3 O 7 composite [5,6]. Carbon coating the LTO surface can improve the electrical conductivity of LTO and isolate LTO from the electrolyte, preventing gas evolution caused by electrode decomposition, a loss of power and a loss of specific capacity [7][8][9][10]. Furthermore, carbon coating on the LTO surface improves the cycling stability of the LTO/TiO 2 electrode [11].…”

Section: Introductionmentioning

confidence: 99%

Oxalic acid-assisted preparation of LTO-carbon composite anode material for lithium-ion batteries

Murashko,

Karhunen,

Meščeriakovas

et al. 2024

Nanotechnology

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This study presents an oxalic acid–assisted method for synthesizing spinel-structured lithium titanate (Li4Ti5O12; LTO)/carbon composite materials. The Ag-doped LTO nanoparticles (NPs) are synthesized via flame spray pyrolysis (FSP). The synthesized material is used as a precursor for synthesizing the LTO-NP/C composite material with chitosan as a carbon source and oxalic acid as an additive. Oxalic acid improves the dissolution of chitosan in water as well as changes the composition and physical and chemical properties of the synthesized LTO-NP/C composite material. The oxalic acid/chitosan ratio can be optimized to improve the electrochemical performance of the LTO-NP/C composite material, and the electrode synthesized with a high mass loading ratio (5.44 mg cm−2) exhibits specific discharge capacities of 156.5 and 136 mAh g−1 at 0.05 C- and 10 C-rate currents, respectively. Moreover, the synthesized composite LTO-NP/C composite material exhibits good cycling stability, and only 1.7% decrease in its specific capacity was observed after 200 charging-discharging cycles at 10 C-rate discharging current.

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