Highly Conductive and Thermostable Grafted Polyrotaxane/Ceramic Hybrid Polymer Electrolyte for Solid-State Lithium-Metal Batteries

He, Yuyue; Li, Ying; Tong, Qingsong; Zhang, Jindan; Weng, Jingzheng; Zhu, Mengqi

doi:10.1021/acsami.1c10232

Cited by 18 publications

(13 citation statements)

References 40 publications

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Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 3b, and Figure S17 and Table S3, Supporting Information, LOPPM PE exhibits a high t Li + number of 0.54 by Equation (S4), Supporting Information, while 0.35 for LOPP PE and 0.10 for LPP PE because OMMT has the effect of fixing TFSI − anion. [ 31 ] The electrochemical stability window refers to the voltage difference between the oxidation potential and reduction potential of electrolytes, that is, the energy difference between the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO). [ 32 ] PMMA has a high LUMO energy level, and PVDF and P(VDF‐HFP) have a lower HOMO energy level.…”

Section: Resultsmentioning

confidence: 99%

“…The strong interaction with lithium salts accelerates the dissociation of PE and ionic conductivity. [31] The remarkably promoted ionic conductivity should attribute to the Lewis acid center of OMMT and its solubilization among LiTFSI, DMF, and the matrix to accelerate the dissociation of LiTFSI and [Li(DMF) x TFSI] transference. [31] Figure 3a reveals the dependence of the ionic conductivity on the temperature.…”

Section: Physical and Electrochemical Properties Of Pes With Multi-di...mentioning

confidence: 99%

“…[31] The remarkably promoted ionic conductivity should attribute to the Lewis acid center of OMMT and its solubilization among LiTFSI, DMF, and the matrix to accelerate the dissociation of LiTFSI and [Li(DMF) x TFSI] transference. [31] Figure 3a reveals the dependence of the ionic conductivity on the temperature. The nonlinear variation of PEs in the range of 25-85 °C is consistent with the VTF equation (Equation (S2), Supporting Information), while a typical Arrhenius behavior above 85 °C (Equation (S3), Supporting Information).…”

Section: Physical and Electrochemical Properties Of Pes With Multi-di...mentioning

confidence: 99%

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In Situ Construction Channels of Lithium‐Ion Fast Transport and Uniform Deposition to Ensure Safe High‐Performance Solid Batteries

Zhao

Shan

et al. 2023

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Solid‐state lithium‐ion batteries (SLIBs) are the promising development direction for future power sources because of their high energy density and reliable safety. To optimize the ionic conductivity at room temperature (RT) and charge/discharge performance to obtain reusable polymer electrolytes (PEs), polyvinylidene fluoride (PVDF), and poly(vinylidene fluoride‐hexafluoro propylene) (P(VDF‐HFP)) copolymer combined with polymerized methyl methacrylate (MMA) monomers are used as substrates to prepare PE (LiTFSI/OMMT/PVDF/P(VDF‐HFP)/PMMA [LOPPM]). LOPPM has interconnected lithium‐ion 3D network channels. The organic‐modified montmorillonite (OMMT) is rich in the Lewis acid centers, which promoted lithium salt dissociation. LOPPM PE possessed high ionic conductivity of 1.1 × 10−3 S cm−1 and a lithium‐ion transference number of 0.54. The capacity retention of the battery remained 100% after 100 cycles at RT and 0.5 C. The initial capacity of one with the second‐recycled LOPPM PE is 123.9 mAh g−1. This work offered a feasible pathway for developing high‐performance and reusable LIBs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Physical and Electrochemical Properties Of Pes With Multi-di...mentioning

confidence: 99%

Section: Physical and Electrochemical Properties Of Pes With Multi-di...mentioning

confidence: 99%

See 2 more Smart Citations

In Situ Construction Channels of Lithium‐Ion Fast Transport and Uniform Deposition to Ensure Safe High‐Performance Solid Batteries

Zhao

Shan

et al. 2023

Small

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“…[90] Many techniques such as nuclear magnetic resonance spectroscopy, electrochemical techniques, and Fourier transform infrared spectroscopy (FTIR), can support the effect of Lewis acid-base interaction via the study of lithium-ion transference number and lithium salt dissociation. [91] Based on this Lewis acid-base interaction, ceramic materials, including SiO 2 , [43,44] Al 2 O 3 , [92,93] and TiO 2 , [94,95] are the most popular fillers for polymer electrolytes. The interaction with PEO chains can also result in crosslinking centers for PEO segments with proper surface modification on the fillers.…”

Section: Ion-transport Mechanism In Polymer Matricesmentioning

confidence: 99%

Advanced Composite Solid Electrolytes for Lithium Batteries: Filler Dimensional Design and Ion Path Optimization

Zheng

et al. 2023

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organic liquid electrolytes hinder lithium batteries in achieving higher energy density, longer working life, and safer performance. [12,13] Solid electrolytes not only improve the long-term thermal and electrochemical stabilities but also obviate the need for separators and increase the energy density. [14][15][16][17] From these concerns, solid electrolytes are regarded as a potential substituent to improve the cycle performance of lithium batteries.Solid electrolytes are generally categorized as solid polymer electrolytes, inorganic solid electrolytes, and composite solid electrolytes. [16,18,19] Solid polymer electrolytes, such as poly(ethylene oxide) (PEO) and poly(vinylidene fluoride) (PVDF), are favored for their chemical stability, low density, low cost, processability, and wettability. [20][21][22][23] However, the applications are restricted by their low ionic conductivity at room temperature (typically from 10 −6 to 10 −5 S cm −1 ). Therefore, much research has been devoted to synthesizing solid polymer electrolytes with high ionic conductivity via increasing free volume and constructing fast transport paths, such as applying covalent organic framework-based polymer, [24,25] single lithium-ion-conducting polymer, [26,27] crosslinked polymer network, [28,29] and adding plasticizers. [30,31] Inorganic solid electrolytes, such as Li 7 La 3 Zr 2 O 12 (LLZO, garnet-type) and Li 0.33 La 0.56 TiO 3 (LLTO, perovskite-type), are single-ion conductors with superior lithium-ion conductivity (typically from 10 −4 to 10 −2 S cm −1 ). [32][33][34][35] However, inorganic solid electrolytes usually have a defect of high interfacial contact resistance because of the poor wettability at the electrode and electrolyte interface. [36,37] Moreover, recent studies have proved that the ion transport at the interface and the ionic conductivity of electrolytes are both essential to maintain a stable interface between electrode and electrolyte. [38][39][40] Therefore, constructing composite solid electrolytes by utilizing the advantages of both polymeric and inorganic materials is generally viewed as a practicable solution for nextgeneration lithium batteries. [16,41,42] Many recent studies have shown that the ion-conduction behavior is significantly influenced by the filler structures in a polymer/salt matrix, in which the effect is determined by the natural characteristics of the fillers and the interaction Composite solid electrolytes are considered to be the crucial components of all-solid-state lithium batteries, which are viewed as the next-generation energy storage devices for high energy density and long working life. Numerous studies have shown that fillers in composite solid electrolytes can effectively improve the ion-transport behavior, the essence of which lies in the optimization of the ion-transport path in the electrolyte. The performance is closely related to the structure of the fillers and the interaction between fillers and other electrolyte components including polymer matrices and lithium salts. In this rev...

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A Supertough, Nonflammable, Biomimetic Gel with Neuron‐Like Nanoskeleton for Puncture‐Tolerant Safe Lithium Metal Batteries

Yang

Huang

et al. 2023

Adv Funct Materials

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To overcome the critical safety and performance issues of lithium metal batteries, it is urgent to develop advanced electrolytes with multi‐defensive properties against fire, mechanical puncture, and dendrite growth simultaneously, in addition to high ion‐conductivity. However, realizing these essential properties by one electrolyte has proved to be extremely challenging due to the inherent conflicts among them. Herein, to circumvent this challenge, a neuron‐like gel polymer electrolyte (simply referred as Neu‐PE) to simultaneously achieve supertoughness, nonflammability, dendrite‐suppression capability and self‐driven property is reported. This Neu‐PE takes advantage of nano‐phase separation regulated by highly ion‐conductive deep‐eutectic solvent. As a result, the Neu‐PE holds high ambient ionic conductivity (1.27±0.09 mS cm−1), super‐toughness and strength (22.52 MJ m−3 and 13.5±0.6 MPa), fire resistance and importantly, lithium‐metal anode protection capability. Lithium metal batteries assembled with this multi‐defensive Neu‐PE can work normally even under metal‐probe puncture or serious damage by cutting.

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Highly Conductive and Thermostable Grafted Polyrotaxane/Ceramic Hybrid Polymer Electrolyte for Solid-State Lithium-Metal Batteries

Cited by 18 publications

References 40 publications

In Situ Construction Channels of Lithium‐Ion Fast Transport and Uniform Deposition to Ensure Safe High‐Performance Solid Batteries

In Situ Construction Channels of Lithium‐Ion Fast Transport and Uniform Deposition to Ensure Safe High‐Performance Solid Batteries

Advanced Composite Solid Electrolytes for Lithium Batteries: Filler Dimensional Design and Ion Path Optimization

A Supertough, Nonflammable, Biomimetic Gel with Neuron‐Like Nanoskeleton for Puncture‐Tolerant Safe Lithium Metal Batteries

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