High-performance free-standing hybrid solid electrolyte membrane combined with Li6.28Al0.24La3Zr2O12 and hexagonal-BN for all-solid-state lithium-based batteries

Kim, Ji‐Hwan; Park, Deok‐Hye; Jang, Jae‐Sung; Shin, Jae‐Hoon; Kim, Min‐Cheol; Kim, Sung-Beom; Moon, Sangook; Lee, Seong-Nam; Park, Kyung-Won

doi:10.1016/j.cej.2022.137035

Cited by 20 publications

(7 citation statements)

References 90 publications

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“…It was not brought to attention until the 2010s when researchers attempted to dope LLZO with Al. − A huge improvement of ionic conductivity up to 0.25–1.0 × 10 –3 S·cm –1 was identified in Li 6.25 Al 0.25 La 3 Zr 2 O 12 with a cubic structure. − Shortly afterward, people realized that the doping-induced phase transformation of LLZO from tetragonal to cubic favors ionic transport by creating more Li-ion migration pathways. From then on, many other dopants, including Al/Ga/Fe for Li, − Ge/Sr/Ce for La, − and Ta/Nb/Ti for Zr, − have been explored. All of them are capable of converting LLZO into a cubic structure at sufficiently high doping concentrations.…”

Section: Introductionmentioning

confidence: 99%

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO₂ Precipitates for Advanced All-Solid-State Batteries

Luo

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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Ga-doped garnet-type Li 7 La 3 Zr 2 O 12 (Ga-LLZO) ceramics have long been recognized as ideal electrolyte candidates for all-solid-state lithium batteries (ASSLBs). However, in this study, it is shown that Ga-LLZO easily and promptly cracks in contact with molten lithium during the ASSLB assembly. This can be mainly ascribed to two aspects: (i) lithium captures O atoms and reduces Ga ions of the Ga-LLZO matrix, leading to a bandgap closure from >5 to <2 eV and a structural collapse from cubic to tetrahedral; and (ii) the in situ-formed LiGaO 2 impurity phase has severe side reactions with lithium, resulting in huge stress release along the grain boundaries. It is also revealed that, while the former process consumes hours to take effect, the latter one is immediate and accounts for the crack propagation of Ga-LLZO electrolytes. A minute SiO 2 is preadded during the synthesis of Ga-LLZO and found effective in eliminating the LiGaO 2 impurity phase. The SiO 2 -modified Ga-LLZO solid electrolytes display excellent thermomechanical and electrochemical stabilities against lithium metals and well-reserved ionic conductivities, which was further confirmed by half-cells and full batteries. This study contributes to the understanding of the stability of garnet electrolytes and promotes their potential commercial applications in ASSLBs.

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Section: Introductionmentioning

confidence: 99%

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO₂ Precipitates for Advanced All-Solid-State Batteries

Luo

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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“…62,63 Aer 100 cycles, LMFO-0 and LMFO-6 exhibited R ct values of 60 and 3.6 kU, respectively, demonstrating the enhanced structural stability of LMFO-6. 64 The resistance (R sei ) values, [65][66][67] associated with the solid electrolyte interphase layers of LMFO-0 and LMFO-6 were similar, indicating that Fe-substitution did not signicantly affect the interface between the electrode and the electrolyte. Fig.…”

Section: Electrochemical Characterizationmentioning

confidence: 97%

Ameliorating electrochemical performance of Li-rich Mn-based cathodes for Li-ion batteries by Fe substitution

Kim,

Kim

et al. 2024

J. Mater. Chem. A

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“…47 h-BN coating or additives in all-solid-state and quasisolid-state electrolytes can greatly protect electrolytes from reducing by Li metal, which improves the rate and cycling performance. 74,118 Yang and coworkers utilized a mechanically robust h-BN film as the interfacial protection to preclude the reduction of Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) by Li. The assembled Li/Li cells with h-BN coating exhibited higher initial total area specific resistance (ASR) than those lacking h-BN coating.…”

Section: Li-metal Batteriesmentioning

confidence: 99%

Advances in boron nitride‐based materials for electrochemical energy storage and conversion

Sun,

Yang

et al. 2023

EcoEnergy

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Energy storage and conversion (ESC) devices are regarded as predominant technologies to reach zero emission of carbon dioxide, which still face many challenges, such as poor safety, limited cycle life, low efficiency, etc. Hexagonal boron nitride (h‐BN), distinguished by its robust mechanical strength, chemical inertness, exceptional thermal stability, and superior ion conductivity, has appeared to meet some challenges of ESC devices. Typically, h‐BN can act as a perfect modifier to enhance the safety of batteries by improving the mechanical strength and heat dissipation of separators, extend cycle life of Li metal batteries by protecting solid state electrolyte from reducing and increase efficiency of fuel cells by improving the proton conductivity of membranes. Besides, recent progress on doping, surface modification, tailoring quantum dots, heterostructures, and hybridizations with other nanomaterials has made it possible to extensively apply h‐BN to other ESC technologies. This review provides a comprehensive overview of the up‐to‐date synthetic strategies for BN‐based materials and discusses the most recent breakthroughs on their application in electrochemical ESC technologies. Also, the challenges and future development for BN‐based materials in these fields are assessed.

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High-performance free-standing hybrid solid electrolyte membrane combined with Li6.28Al0.24La3Zr2O12 and hexagonal-BN for all-solid-state lithium-based batteries

Cited by 20 publications

References 90 publications

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO₂ Precipitates for Advanced All-Solid-State Batteries

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO₂ Precipitates for Advanced All-Solid-State Batteries

Ameliorating electrochemical performance of Li-rich Mn-based cathodes for Li-ion batteries by Fe substitution

Advances in boron nitride‐based materials for electrochemical energy storage and conversion

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High-performance free-standing hybrid solid electrolyte membrane combined with Li6.28Al0.24La3Zr2O12 and hexagonal-BN for all-solid-state lithium-based batteries

Cited by 20 publications

References 90 publications

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO2 Precipitates for Advanced All-Solid-State Batteries

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO2 Precipitates for Advanced All-Solid-State Batteries

Ameliorating electrochemical performance of Li-rich Mn-based cathodes for Li-ion batteries by Fe substitution

Advances in boron nitride‐based materials for electrochemical energy storage and conversion

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Product

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Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO₂ Precipitates for Advanced All-Solid-State Batteries

Excellent Stability of Ga-Doped Garnet Electrolyte against Li Metal Anode via Eliminating LiGaO₂ Precipitates for Advanced All-Solid-State Batteries