Identifying lithium difluoro(oxalate)borate as a multifunctional electrolyte additive to enable high-voltage Li4Ti5O12 lithium-ion batteries

Ka, Ou; Cheng, Fang; Wen, Lang; Wang, Xiaoqu; Wang, Ting; Zeng, Xinyu; Lu, Wen; Dai, Liming

doi:10.1039/d4ta00750f

J. Mater. Chem. A

2024

DOI: 10.1039/d4ta00750f

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Identifying lithium difluoro(oxalate)borate as a multifunctional electrolyte additive to enable high-voltage Li₄Ti₅O₁₂ lithium-ion batteries

Ou Ka,

Fang Cheng,

Lang Wen

et al.

Abstract: Li4Ti5O12 (LTO) is an excellent anode for lithium-ion batteries (LIBs). However, large-scale commercialization of LTO-based LIBs is hindered by the shortcomes of LTO, including sluggish kinetics, severe gas generation, and...

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Cited by 4 publications

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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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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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Cooperation Between Methyl Acetate Solvent and Binder Remarkably Improves the Low-Temperature Performance of the LiNi_0.5Mn_1.5O₄ Cathode

Mei,

Xu,

Wang

2024

J. Phys. Chem. C

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Li 4 Ti 5 O 12 (LTO)/LiNi 0.5 Mn 1.5 O 4 (LNMO) batteries have appealing features, such as suitable energy density and high safety. A proper binder of the LNMO cathode and electrolyte can improve the performance of batteries. Herein, we first combined the polyacrylic acid (PAA) binder with an ester-based electrolyte due to their homologous structure. This system has better performance than other binders of LNMO cathode, like poly(vinylidene fluoride) (PVDF), styrene−butadiene rubber (SBR), and polytetrafluoroethylene (PTFE). In the methyl acetate (MA) electrolyte, the LTO/LNMO battery with the PAA binder exhibited the highest discharge capacity (137 mAh g −1 at 0.5 C) and the best rate performance (112 mAh g −1 at 5 C). In addition, MA boosted the low-temperature performance of this battery, which can work at −40 °C with a remarkable reversible capacity of 90 mAh g −1 and a discharge capacity of 140 mAh g −1 .

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High-voltage performance of LiNi_0.5Mn_1.5O₄-based lithium-ion batteries with 4-methyl-1,3,2-dioxathiolane-2,2-dioxide (MDTD) as an electrolyte additive

Mu,

Li,

et al. 2024

J. Mater. Chem. A

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Identifying lithium difluoro(oxalate)borate as a multifunctional electrolyte additive to enable high-voltage Li₄Ti₅O₁₂ lithium-ion batteries

Abstract: Li4Ti5O12 (LTO) is an excellent anode for lithium-ion batteries (LIBs). However, large-scale commercialization of LTO-based LIBs is hindered by the shortcomes of LTO, including sluggish kinetics, severe gas generation, and...

Cited by 4 publications

References 80 publications

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

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

Cooperation Between Methyl Acetate Solvent and Binder Remarkably Improves the Low-Temperature Performance of the LiNi_0.5Mn_1.5O₄ Cathode

High-voltage performance of LiNi_0.5Mn_1.5O₄-based lithium-ion batteries with 4-methyl-1,3,2-dioxathiolane-2,2-dioxide (MDTD) as an electrolyte additive

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Identifying lithium difluoro(oxalate)borate as a multifunctional electrolyte additive to enable high-voltage Li4Ti5O12 lithium-ion batteries

Abstract: Li4Ti5O12 (LTO) is an excellent anode for lithium-ion batteries (LIBs). However, large-scale commercialization of LTO-based LIBs is hindered by the shortcomes of LTO, including sluggish kinetics, severe gas generation, and...

Cited by 4 publications

References 80 publications

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

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

Cooperation Between Methyl Acetate Solvent and Binder Remarkably Improves the Low-Temperature Performance of the LiNi0.5Mn1.5O4 Cathode

High-voltage performance of LiNi0.5Mn1.5O4-based lithium-ion batteries with 4-methyl-1,3,2-dioxathiolane-2,2-dioxide (MDTD) as an electrolyte additive

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Identifying lithium difluoro(oxalate)borate as a multifunctional electrolyte additive to enable high-voltage Li₄Ti₅O₁₂ lithium-ion batteries

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

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

Cooperation Between Methyl Acetate Solvent and Binder Remarkably Improves the Low-Temperature Performance of the LiNi_0.5Mn_1.5O₄ Cathode

High-voltage performance of LiNi_0.5Mn_1.5O₄-based lithium-ion batteries with 4-methyl-1,3,2-dioxathiolane-2,2-dioxide (MDTD) as an electrolyte additive