Stable Interface between Lithium and Electrolyte Facilitated by a Nanocomposite Protective Layer

Yang, Luyi; Song, Yongli; Líu, Hao; Wang, Zijian; Yang, Kai; Zhao, Qinghe; Cui, Yanhui; Wen, Jiayun; Luo, Wei; Pan, Feng

doi:10.1002/smtd.201900751

Cited by 36 publications

(43 citation statements)

References 31 publications

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“…Despite these advantages, the development of practical lithium metal battery (LMB) is still hampered by issues like by low coulomb efficiency, Li dendrite growth and unstable solid electrolyte interface (SEI) layers [ 6 – 8 ]. The growth of Li dendrites can reduce coulomb efficiency and trigger short circuits within the cell, resulting in serious safety hazards [ 9 , 10 ]. Lithium metal can react with the electrolyte to form an SEI layer on the interface.…”

Section: Introductionmentioning

confidence: 99%

Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

et al. 2022

Nano-Micro Lett.

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Highlights A novel amide-based nonflammable electrolyte is proposed. The formation mechanism and solvation chemistry are investigated by molecular dynamics simulations and density functional theory. An inorganic/organic-rich solid electrolyte interphase with an abundance of LiF, Li3N and Li–N–C is in situ formed, leading to spherical lithium deposition. The amide-based electrolyte can enable stable cycling performance at room temperature and 60 ℃. Abstract The formation of lithium dendrites and the safety hazards arising from flammable liquid electrolytes have seriously hindered the development of high-energy-density lithium metal batteries. Herein, an emerging amide-based electrolyte is proposed, containing LiTFSI and butyrolactam in different molar ratios. 1,1,2,2-Tetrafluoroethyl-2,2,3,3-tetrafluoropropylether and fluoroethylene carbonate are introduced into the amide-based electrolyte as counter solvent and additives. The well-designed amide-based electrolyte possesses nonflammability, high ionic conductivity, high thermal stability and electrochemical stability (> 4.7 V). Besides, an inorganic/organic-rich solid electrolyte interphase with an abundance of LiF, Li3N and Li–N–C is in situ formed, leading to spherical lithium deposition. The formation mechanism and solvation chemistry of amide-based electrolyte are further investigated by molecular dynamics simulations and density functional theory. When applied in Li metal batteries with LiFePO4 and LiMn2O4 cathode, the amide-based electrolyte can enable stable cycling performance at room temperature and 60 ℃. This study provides a new insight into the development of amide-based electrolytes for lithium metal batteries.

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Section: Introductionmentioning

confidence: 99%

Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

et al. 2022

Nano-Micro Lett.

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“…This may cause the internal short circuit of batteries, preventing their wide‐scale application. To isolate the direct contact between LATP and lithium metal, strategies such as the surface coating of artificial protective layers including but not limited to metallic film, [ 21 ] nanocomposites, [ 22,23 ] metal oxides, [ 24,25 ] polymers, [ 26–28 ] and Li‐conductors [ 29–31 ] have been proposed. Although the physical contact between LATP and lithium metal has been effectively avoided, the preparation of these protection layers is complicated and time‐consuming.…”

Section: Introductionmentioning

confidence: 99%

Highly Stable Quasi‐Solid‐State Lithium Metal Batteries: Reinforced Li_1.3Al_0.3Ti_1.7(PO₄)₃/Li Interface by a Protection Interlayer

Chen

Kim

et al. 2021

Advanced Energy Materials

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NASICON‐type Li1+xAlxTi2−x(PO4)3 (LATP) solid electrolytes have developed as a promising candidate for solid‐state lithium batteries. However, the brittle and stiff LATP suffers from poor physical contact with electrodes and chemical/electrochemical instability at electrode|electrolyte interfaces. Herein, a thin and flexible hybrid electrolyte comprised of LATP and poly(vinylidene fluoride‐trifluorethylene) (PVDF‐TrFE) incorporated with highly concentrated ionic liquid electrolyte (ILE) is prepared to resolve these prominent limitations. To further protect the LATP|Li interface, an ultrathin poly[2,3‐bis(2,2,6,6‐tetramethylpiperidine‐N‐oxycarbonyl)‐norbornene] (PTNB) polymer is coated on Li, acting as an additional protective layer. Consequently, the lithium stripping‐plating lifetime is prolonged from 128 to 792 h, with no dendritic lithium observed. The PTNB@Li||LiNi0.8Co0.1Mn0.1O2 (PTNB@Li||NCM811) cells achieve significantly improved rate capability and cycling stability, predominantly resulting from the drastically decreased interfacial resistances, prohibited dendritic lithium generation, mitigated cathode material phase evolution, and prevention of internal microcrack formation. The thinner interphases formed on NCM811 and PTNB@Li electrodes also play a key role. The quasi‐solid‐state batteries allow for the fabrication of multi‐layer bipolar cells with stable cycling. Even under some exertive circumstances, (limited lithium source, low temperature, e.g., 0 °C), the impressive electrochemical performance achieved highlights the importance of such quasi‐solid‐state lithium batteries as a viable solution for the next‐generation high‐performance lithium batteries.

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“…101 (C) Illustration of the coating process to prepare LiF, MgF 2 , and B 2 O 3 coated Li. Reproduced with permission: Copyright 2020, Wiley-VCH 102. (D) Cross-sectional SEM images of the LATP/Li metal anode interfaces with the ionogel interlayer.…”

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confidence: 99%

Progress and perspective of Li_1 + _xAl_xTi₂_‐x(PO₄)₃ ceramic electrolyte in lithium batteries

Yang

Chen

et al. 2021

InfoMat

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The replacement of liquid organic electrolytes with solid-state electrolytes (SSEs) is a feasible way to solve the safety issues and improve the energy density of lithium batteries. Developing SSEs materials that can well match with high-voltage cathodes and lithium metal anode is quite significant to develop high-energy-density lithium batteries. Li 1 + x Al x Ti 2 -x (PO 4 ) 3 (LATP) SSE with NASICON structure exhibits high ionic conductivity, low cost and superior air stability, which enable it as one of the most hopeful candidates for all-solidstate batteries (ASSBs). However, the high interfacial impedance between LATP and electrodes, and the severe interfacial side reactions with the lithium metal greatly limit its applications in ASSBs. This review introduces the crystal structure and ion transport mechanisms of LATP and summarizes the key factors affecting the ionic conductivity. The side reaction mechanisms of LATP with Li metal and the promising strategies for optimizing interfacial compatibility are reviewed. We also summarize the applications of LATP including as surface coatings of cathode particles, ion transport network additives and inorganic fillers of composite polymer electrolytes. At last, this review proposes the challenges and the future development directions of LATP in SSBs. K E Y W O R D Scrystal structure, interfaces, ionic conductivity, Li 1 + x Al x Ti 2 -x (PO 4 ) 3 , lithium batteries

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Stable Interface between Lithium and Electrolyte Facilitated by a Nanocomposite Protective Layer

Cited by 36 publications

References 31 publications

Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

Highly Stable Quasi‐Solid‐State Lithium Metal Batteries: Reinforced Li_1.3Al_0.3Ti_1.7(PO₄)₃/Li Interface by a Protection Interlayer

Progress and perspective of Li_1 + _xAl_xTi₂_‐x(PO₄)₃ ceramic electrolyte in lithium batteries

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Stable Interface between Lithium and Electrolyte Facilitated by a Nanocomposite Protective Layer

Cited by 36 publications

References 31 publications

Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

Safe and Stable Lithium Metal Batteries Enabled by an Amide-Based Electrolyte

Highly Stable Quasi‐Solid‐State Lithium Metal Batteries: Reinforced Li1.3Al0.3Ti1.7(PO4)3/Li Interface by a Protection Interlayer

Progress and perspective of Li1 + xAlxTi2‐x(PO4)3 ceramic electrolyte in lithium batteries

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Product

Resources

About

Highly Stable Quasi‐Solid‐State Lithium Metal Batteries: Reinforced Li_1.3Al_0.3Ti_1.7(PO₄)₃/Li Interface by a Protection Interlayer

Progress and perspective of Li_1 + _xAl_xTi₂_‐x(PO₄)₃ ceramic electrolyte in lithium batteries