PEO-based composite solid electrolyte for lithium battery with enhanced interface structure

Lv, Ning; Zhang, Qiuyitong; Xu, Yihuan; Li, Hanyang; Wei, Zijie; Tao, Zhenhua; Wang, Yadong; Tang, Haolin

doi:10.1016/j.jallcom.2022.168675

Cited by 16 publications

(6 citation statements)

References 52 publications

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“…As shown in Figure 2b, the X‐ray diffraction spectra (XRD) of PEO‐ADP@UF is consistent with that of PEO. The diffraction peaks located at 19° and 23.2° are presented in all samples simultaneously and the peak heights in PEO‐ADP@UF and PEO‐ADP significantly reduce, which suggests the addition of ADP and ADP@UF can reduce the crystallinity of the polymers and favor the migration of Li + in SPE [27–28] . Besides, the addition of ADP@UF plays a role in the flexibility of the material.…”

Section: Resultsmentioning

confidence: 91%

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Nonflammable Solid‐State Polymer Electrolyte for High‐Safety and Ultra‐Stable Lithium‐Ion Batteries

Zhang,

Liu,

Zhang

et al. 2024

Batteries & Supercaps

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High safety and stability in batteries are crucial factors for the large‐scale application of lithium‐ion technology. In this work, flame‐retardant aluminum diethylphosphonite (ADP) is coated by urea‐formaldehyde (UF) shell to conquer the side reactions caused by ADP during cycling process. And then the core@shell structured ADP@UF is combined with poly(ethylene oxide) (PEO), high thermal stability can be realized. When exposed to high temperatures, ADP@UF generates N· and P· radicals to eliminate the combustion the H· and OH· radical, to inhibit fire. By controlling the percentage of flame retardant added, PEO‐ADP@UF has totally achieved the effect of inflaming retarding, realizing stable electrochemical properties at the same time. The ‐NH2 in UF forms hydrogen bonds with PEO, and acts as a Lewis base to promote the dissociation of lithium salts to increase the lithium‐ion mobility number. Compared to PEO, battery with PEO‐ADP@UF has outstanding cycling performance (103 mAh g‐1 at 1 C, 2.5‐4.2 V) and long service life (800 cycles).

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Section: Resultsmentioning

confidence: 91%

“…which suggests the addition of ADP and ADP@UF can reduce the crystallinity of the polymers and favor the migration of Li + in SPE. [27][28] Besides, the addition of ADP@UF plays a role in the flexibility of the material. As shown in Figure 2c, with 25 % ADP, the maximum value of PEO-ADP's tolerable pressure is 5 MPa.…”

Section: Resultsmentioning

confidence: 99%

Nonflammable Solid‐State Polymer Electrolyte for High‐Safety and Ultra‐Stable Lithium‐Ion Batteries

Zhang,

Liu,

Zhang

et al. 2024

Batteries & Supercaps

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“…While Boehmite cannot directly improve the conductivity of solid-state electrolytes, the inorganic nanoparticles hybridizing with PEO can reduce PEO crystallization and weaken the inter-action between polymer-ions. 42,43 Besides, to probe the threshold of the effect of nanoparticle grain size on the ionic conductivity of the electrolyte, we used pseudo-boehmite as the crystal seed, controlled different proportions of aluminum hydroxide, and prepared boehmite by a hydrothermal method at 240 °C to synthesize high-crystallinity boehmite, and applied it in solid electrolytes. The results show that the grain size of boehmite increases with the increase in the proportion of aluminum hydroxide, and after the (020) crystal surface calculations, it is observed that their grain sizes are 29.3, 36.0, and 40.4 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Different-grain-sized boehmite nanoparticles for stable all-solid-state lithium metal batteries

Zhao,

Tian,

Gao

et al. 2024

Nanoscale

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“…As one of the key components of AASLMBs, SSEs not only provide physical isolation of the cathode and anode but also transmission paths for Li + during charge–discharge cycling. − In general, SSEs are typically grouped into two primary categories, namely, solid polymer electrolytes (SPEs) such as polyethylene oxide (PEO − ) and inorganic solid electrolytes (ISEs) such as L i7 La 3 Zr 2 O 12 (LLZO , ). Especially, Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 belonging to ISEs attracts enormous attention owing to its advantages of outstanding ionic conductivities, low density, and affordable production costs for industrialization.…”

Section: Introductionmentioning

confidence: 99%

Double-Layer Electrolyte Boosts Cycling Stability of All-Solid-State Li Metal Batteries

Lei

Tan

et al. 2023

ACS Appl. Mater. Interfaces

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All-solid-state lithium metal batteries (ASSLMBs), as a candidate for advanced energy storage devices, invite an abundance of interest due to the merits of high specific energy density and eminent safety. Nevertheless, issues of overwhelming lithium dendrite growth and poor interfacial contact still limit the practical application of ASSLMBs. Herein, we designed and fabricated a double-layer composite solid electrolyte (CSE), namely, PVDF-LiTFSI-Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 /PVDF-LiTFSI-h-BN (denoted as PLLB), for ASSLMBs. The reduction-tolerant PVDF-LiTFSI-h-BN (denoted as PLB) layer of the CSE tightly contacts with the Li metal anode to avoid the reduction of LATP by the electrode and participates in the formation of a stable SEI film using Li 3 N. Meanwhile, the oxidation-resistance and ionconductive PVDF-LiTFSI-LATP (denoted as PLA) layer facing the cathode can reduce the interfacial impedance by facilitating ionic migration. With the synergistic effect of PLA and PLB, the Li/Li symmetric cells with sandwich-type electrolytes (PLB/PLA/ PLB) can operate for 1500 h with ultralong cycling stability at 0.1 mA cm −2 . Additionally, the LiFePO 4 /Li cell with PLLB maintains satisfactory capacity retention of 88.2% after 250 cycles. This novel double-layer electrolyte offers an effective approach to achieving fully commercialized ASSLMBs. KEYWORDS: all-solid-state lithium metal batteries, Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 , poly(vinylidene fluoride), double-layer electrolyte, lithium metal

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PEO-based composite solid electrolyte for lithium battery with enhanced interface structure

Cited by 16 publications

References 52 publications

Nonflammable Solid‐State Polymer Electrolyte for High‐Safety and Ultra‐Stable Lithium‐Ion Batteries

Nonflammable Solid‐State Polymer Electrolyte for High‐Safety and Ultra‐Stable Lithium‐Ion Batteries

Different-grain-sized boehmite nanoparticles for stable all-solid-state lithium metal batteries

Double-Layer Electrolyte Boosts Cycling Stability of All-Solid-State Li Metal Batteries

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