Carbon-coated Li4Ti5O12 nanoflakes for ultra-fast charging of lithium-ion batteries

Hu, Yibo; Wang, Lingxu; Zhu, Chunyan; Zhang, Luyuan; Wang, Chengxiang

doi:10.1016/j.apsusc.2024.159619

Applied Surface Science

2024

DOI: 10.1016/j.apsusc.2024.159619

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Carbon-coated Li4Ti5O12 nanoflakes for ultra-fast charging of lithium-ion batteries

Yibo Hu,

Lingxu Wang,

Chunyan Zhu

et al.

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Cited by 8 publications

References 42 publications

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Enhancing Li₄Ti₅O₁₂ Anodes for High‐Performance Batteries: Ti³⁺ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

Abdelaal,

Alkhedher

2024

Batteries & Supercaps

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Lithium titanium oxide (LTO) is a promising anode material due to its ability to store lithium through intercalation reactions. However, its electrochemical performance is limited by poor electron conductivity and side reactions with the electrolyte. In this study, plasma‐enhanced chemical vapor deposition (PECVD) is employed to introduce oxygen vacancies and self‐doped Ti3+ into LTO to improve the internal conductivity. Subsequent carbon coating and aluminum‐doped lithium lanthanum zirconate garnet (LLZO) layers resulted in a multi‐layered composite denoted as LTO‐L‐x. Morphological analyses using SEM and TEM demonstrated the successful growth of Al‐doped LLZO on carbon‐coated LTO. Aluminum ions in LLZO cubic structure are crucial for stabilizing the high ionic conductive phase during cooling, as confirmed by X‐ray diffraction. The dual coating layers have a significant impact on the rate capability, reducing polarization gaps and enabling higher capacities at various current rates. Long‐term cycling tests reveal the robustness of the composite, with LTO‐L‐1.0 retaining 90.8% capacity after 4000 cycles at 1.0 A.g‐1. This underscores the sustained high electronic and ionic conductivity facilitated by the dual coating layers. The study contributes to the design of advanced anode materials for lithium‐ion batteries, emphasizing the importance of tailored coating strategies to address conductivity and stability challenges.

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Enhancing Li₄Ti₅O₁₂ Anodes for High‐Performance Batteries: Ti³⁺ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

Abdelaal,

Alkhedher

2024

Batteries & Supercaps

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A Solid Electrolyte Based on Sodium‐Doped Li_4‐xNa_xTi₅O₁₂ with PVDF for Solid State Lithium Metal Battery

Chen,

Lv,

Peng

et al. 2024

ChemSusChem

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Solid‐state batteries (SSBs) present a potential pathway for advancing next‐generation lithium batteries, characterized by exceptional energy density and enhanced safety performance. Solid‐state electrolytes have been extensively researched, yet an affordable option with outstanding electrochemical performance is still lacking. In this work, Li4‐xNaxTi5O12 (LNTO)‐based composite solid electrolytes (CSEs) were developed to enhance the interface stability and electronic insulation. The CSE is composed of Li3.88Na0.12Ti5O12 (LNTO3) and poly (vinylidene fluoride) (PVDF) with a proportion of 20 wt.% exhibited high ionic conductivity (4.49 × 10−4 S cm−1 at a temperature value equal to 35 °C), high ionic transfer number (equal to 0.72), low activation energy (equal to 0.192 eV), and favorable compatibility with the Li metal anode. The Li|LNTO3|LiFePO4 cell, tested at a 0.5 C current density, demonstrated 154.5 mAh g−1 of outstanding cycling stability for 200 cycles, capacity retention of 97.6% along with a Coulombic efficiency of over 99%) as well as a significant average specific capacity of 127.8 mAh g−1 over 400 cycles at 5 C. This study offers an effective method for preparing commercial CSEs for SSBs.

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Recent advancements and perspectives of fast-charging composite anodes for lithium-ion batteries

Zeng,

Dong,

Chen

et al. 2024

Sci. China Chem.

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Carbon-coated Li4Ti5O12 nanoflakes for ultra-fast charging of lithium-ion batteries

Cited by 8 publications

References 42 publications

Enhancing Li₄Ti₅O₁₂ Anodes for High‐Performance Batteries: Ti³⁺ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

Enhancing Li₄Ti₅O₁₂ Anodes for High‐Performance Batteries: Ti³⁺ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

A Solid Electrolyte Based on Sodium‐Doped Li_4‐xNa_xTi₅O₁₂ with PVDF for Solid State Lithium Metal Battery

Recent advancements and perspectives of fast-charging composite anodes for lithium-ion batteries

Contact Info

Product

Resources

About

Carbon-coated Li4Ti5O12 nanoflakes for ultra-fast charging of lithium-ion batteries

Cited by 8 publications

References 42 publications

Enhancing Li4Ti5O12 Anodes for High‐Performance Batteries: Ti3+ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

Enhancing Li4Ti5O12 Anodes for High‐Performance Batteries: Ti3+ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

A Solid Electrolyte Based on Sodium‐Doped Li4‐xNaxTi5O12 with PVDF for Solid State Lithium Metal Battery

Recent advancements and perspectives of fast-charging composite anodes for lithium-ion batteries

Contact Info

Product

Resources

About

Enhancing Li₄Ti₅O₁₂ Anodes for High‐Performance Batteries: Ti³⁺ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

Enhancing Li₄Ti₅O₁₂ Anodes for High‐Performance Batteries: Ti³⁺ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings

A Solid Electrolyte Based on Sodium‐Doped Li_4‐xNa_xTi₅O₁₂ with PVDF for Solid State Lithium Metal Battery