Zinc borate modified multifunctional ceramic diaphragms for lithium-ion battery

Cheng, Hongyu; Hou, Jiyue; Wang, Yanjie; Zhu, Ziyi; Zhou, Yiyong; Li, Xue; Zhang, Yingjie

doi:10.1016/j.ceramint.2022.05.133

Cited by 13 publications

(4 citation statements)

References 32 publications

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“…63,64 Studies report that adding a ceramic coating can enhance the thermal stability of separators thereby improving their heating resistance. 65,66 As expected, the Al 2 O 3 /PE separator had favorable thermal stability and lower shrinkage (25%) compared to the PE separator. The BAC layer contributed even more substantially to the heating resistance of the separator (4% shrinkage).…”

Section: Resultssupporting

confidence: 71%

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al₂O₃ dual coated separator in Li–S batteries

Jo,

Hong,

Momma

et al. 2023

RSC Adv.

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Section: Resultssupporting

confidence: 71%

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al₂O₃ dual coated separator in Li–S batteries

Jo,

Hong,

Momma

et al. 2023

RSC Adv.

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“…Moreover, the NH 2 and OH groups on the coating layer can functionalize as a Lewis base, which can absorb the Lewis acid species that are formed during the electrolyte decomposition process, thus enhancing the overall stability. PP‐TD separator can thereby store more electrolytes, allowing for faster transfer of Li + between cathode and anode 42 . Therefore, PP‐TD separator displayed higher ion conductivity although the porosity is lower.…”

Section: Resultsmentioning

confidence: 99%

“…PP-TD separator can thereby store more electrolytes, allowing for faster transfer of Li + between cathode and anode. 42 Therefore, PP-TD separator displayed higher ion conductivity although the porosity is lower. It is also worth noting that PP-TD2 separator has the largest conductivity, followed by PP-TD1 and PP-TD3.…”

Section: Electrochemical Performance Of Pp and Pp-td Separatorsmentioning

confidence: 98%

Hierarchical self‐assembly of tannic acid/diethylenetriamine on polypropylene for high‐performance separator

Wang,

Han,

Liu

et al. 2024

J of Applied Polymer Sci

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In lithium‐ion batteries (LIBs), separator is used to provide a barrier between the anode and cathode and provide freedom for the transport of lithium‐ions, which serves a key function in inhibiting internal short circuit and improving the battery safety. The limited wettability of commercial polyolefin separators in electrolytes restricts its utilization in extreme environmental conditions. In our work, we choose polypropylene (PP) as the precursor and can address the issue of poor wettability through suitable modification methods. Tannic acid (TA) and diethylenetriamine (DETA) were utilized to coat PP separator via hierarchical self‐assembly approach, and the coating is further stabilized by taking advantage of the specific oxidizing properties of sodium periodate. This method scarcely increases the separator thickness or sacrifices the microporous structure of the original separator. The improved separator not only exhibits outstanding wetting capability and relatively high ion conductivity (1.24 mS cm−1), but also has the highest lithium‐ion migration number of 0.74. This indicates that when the modified separator is applied to LIBs, its electrochemical performance is significantly enhanced. The enhancement in electrochemical performance of LIBs is attributed to the strong absorption and retention ability of the coating on the separator. The reversible capacity of Li/PP‐TD2 separator/LiFePO4 battery is 144.3 mAh g−1 at 2C, which is higher than that of PP separator (117.1 mAh g−1) under the same current density. Even after 200 cycles, the PP‐TD2 separator with two‐layer assembly modification still maintains a higher coulombic efficiency of 97.55% and a discharge capacity of 96.6%. This hierarchical self‐assembly modification of PP provides an effective approach for fabricating high‐performance separator.

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“…Several strategies have been adopted to improve the thermal stability and safety of separators, − including utilizing intrinsic thermal-safety materials to prepare separators (e.g., Al 2 O 3 /polyvinylidene fluoride separators and nanoporous polyimide membranes), ,− preparing nonflammable gel/solid electrolytes, , and surface modification by adding thermal-resistance inorganic ceramic coating on commercial separators (e.g., SiO 2 and halloysite). ,, Among them, ceramic nanofiber separators are one of the effective and workable ways to improve the safety and satisfactory electrochemical performances of LIBs. Compared to traditional nanoparticles or nanorods of inorganic materials that often have no satisfactory film-forming ability and can only be used as fillers, inorganic ceramic fibers have extremely high thermal stability, flexibility, and processability. ,− For instance, Jing et al prepared pure ZrO 2 nanowire separators through sol-assisted electrospinning. The separators exhibited good flexibility and electrochemical properties, but the tensile strength was only about 3.72 MPa, which could not meet the requirements of commercial manufacture (∼10 MPa) .…”

Section: Introductionmentioning

confidence: 99%

Mechanically Robust and Safe Separators Based on Inorganic Nanofibers for Lithium-Ion Batteries

Sun,

Liu,

Sang

et al. 2024

ACS Appl. Energy Mater.

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Commercial polyolefin separators suffer from inferior electrolyte affinity, low thermal stability, and other serious safety concerns. Ceramic separators are promising alternatives to alleviate these issues, but the fragile structure restricts practical applications. A mechanically robust, high-safety, and flame-retardant composite separator (BHLP) of a hierarchical cross-linked architecture is constructed based on a multibond reinforcement mechanism. The inorganic and organic components of the separator are tightly integrated through electrostatic forces, hydrogen bonds, and chemical bonds. The as-prepared separator exhibits high tensile strength (16.28 MPa), which is approximately 1.7 times that of the PP separator in the transverse direction. Benefiting from the excellent thermal stability and high aspect ratio of hydroxyapatite nanowires, the thermal shrinkage of the BHLP separator is negligible after heating at 200 °C for 1 h and it features with has a highly porous nanostructure, good electrolyte affinity, and high ionic conductivity (0.87 mS cm −1 ). The LiNi 0.8 Co 0.1 Mn 0.1 O 2 ||graphite full cell with the BHLP separator performs a high specific discharge capacity (184.7 mA h g −1 ) at 0.1C and outstanding cycling stability with the capacity retention of 93.9% over 100 cycles at room temperature.

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Zinc borate modified multifunctional ceramic diaphragms for lithium-ion battery

Cited by 13 publications

References 32 publications

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al₂O₃ dual coated separator in Li–S batteries

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al₂O₃ dual coated separator in Li–S batteries

Hierarchical self‐assembly of tannic acid/diethylenetriamine on polypropylene for high‐performance separator

Mechanically Robust and Safe Separators Based on Inorganic Nanofibers for Lithium-Ion Batteries

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Zinc borate modified multifunctional ceramic diaphragms for lithium-ion battery

Cited by 13 publications

References 32 publications

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al2O3 dual coated separator in Li–S batteries

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al2O3 dual coated separator in Li–S batteries

Hierarchical self‐assembly of tannic acid/diethylenetriamine on polypropylene for high‐performance separator

Mechanically Robust and Safe Separators Based on Inorganic Nanofibers for Lithium-Ion Batteries

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Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al₂O₃ dual coated separator in Li–S batteries

Facile one-pot synthesis of biomass-derived activated carbon as an interlayer material for a BAC/PE/Al₂O₃ dual coated separator in Li–S batteries