Enhanced wetting properties of a polypropylene separator for a lithium-ion battery by hyperthermal hydrogen induced cross-linking of poly(ethylene oxide)

Man, Changzhen; Jiang, Peng; Wong, Kam-Fai; Zhao, Yun; Tang, Changyu; Fan, Meikun; Lau, Woon‐Ming; Murai, Jun; Li, Shaomin; Líu, Hao; Hui, David

doi:10.1039/c4ta01870b

Cited by 72 publications

(47 citation statements)

References 38 publications

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“… copyright 2014 Springer), and (C) a PEO‐grafted PP separator (reproduced from Ref. with permission from The Royal Society of Chemistry). (D) Water contact angle and electrolyte contact angle on the PEO‐grafted PP separator and pristine PP separator.…”

Section: Advanced Separators For Li‐ion Batteriesmentioning

confidence: 99%

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Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

et al. 2016

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Li-ion and Li-S batteries find enormous applications in different fields, such as electric vehicles and portable electronics. A separator is an indispensable part of the battery design, which functions as a physical barrier for the electrode as well as an electrolyte reservoir for ionic transport. The properties of the separators directly influence the performance of the batteries. Traditional polyolefin separators showed low thermal stability, poor wettability toward the electrolyte, and inadequate barrier properties to polysulfides. To improve the performance and durability of Li-ion and Li-S batteries, development of advanced separators is required. In this review, we summarize recent progress on the fabrication and application of novel separators, including the functionalized polyolefin separator, polymeric separator, and ceramic separator, for Li-ion and Li-S batteries. The characteristics, advantages, and limitations of these separators are discussed. A brief outlook for the future directions of the research in the separators is also provided.

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Section: Advanced Separators For Li‐ion Batteriesmentioning

confidence: 99%

“…Reproduced from Ref. with permission from The Royal Society of Chemistry. (F) SEM image of a tannic acid‐coated PP separator.…”

Section: Advanced Separators For Li‐ion Batteriesmentioning

confidence: 99%

Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

et al. 2016

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“…Recently, a surface sensitive cross-linking technology, namely, hyperthermal hydrogen induced cross-linking (HHIC), has been developed as a novel surface modification method which selectively cleaves C-H bonds [31][32][33][34][35][36] . The carbon radicals created by the hyperthermal hydrogen projectile bombardment results in cross-linking of the hydrocarbons on the top surface.…”

Section: Introductionmentioning

confidence: 99%

Cross-Linking the Surface of Cured Polydimethylsiloxane via Hyperthemal Hydrogen Projectile Bombardment

Bao¹,

Xu²,

Tang³

et al. 2015

ACS Appl. Mater. Interfaces

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Cross-linking of polydimethylsiloxane (PDMS) is increasingly important with recent focus on its top surface stiffness. In this paper, we demonstrate that hyperthermal hydrogen projectile bombardment, a surface sensitive cross-linking technology, is superior in enhancing the mechanical properties of a cured PDMS surface without significantly degrading its hydrophobicity. Both water contact angle measurements and time-of-flight secondary ion mass spectrometry are used to investigate the variations in surface chemistry and structure upon cross-linking. Using nanoindentation and atomic force microscopy, we confirm that the thickness of the cross-linked PDMS is controllable by the bombardment time, which opens opportunities for tuning cross-linking degree in compliance with arising requirements from the practice.

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“…The massive existence of strong electron‐withdrawing groups (−F and −O−) in polymer chains can account for it. The C=O groups in the carbonates will interact with −F and −O− in polymer chains and then the LiPF 6 ‐based liquid electrolyte ‐is pulled into the polymer matrices . Based on Figure S3, the calculated ionic conductivity at r.t. of the PEO/PVDF‐based GM and the wet separator is about 0.28 mS cm −1 and 0.42 mS cm −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

A Compact Gel Membrane Based on a Blend of PEO and PVDF for Dendrite‐Free Lithium Metal Anodes

Liang

Shi

et al. 2019

ChemElectroChem

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A compact gel membrane (GM) with certain flexibility is facilely fabricated after a casted PEO/PVDF blend film is swelled by a LiPF 6 -based liquid electrolyte. The GM exhibits a suitable lithium ionic conductivity (0.28 mS cm À 1 at r.t., room temperature), a remarkable lithium-ion transference number (0.52 at r.t.), and high mechanical strength (19.0 MPa) in dry or wet state. Owing to the special comprehensive performance of the GM, dendritefree reversible lithium plating/stripping (up to 500 h) at a current density of 0.5 mA cm À 2 and a capacity of 0.25 mAh cm À 2 is achieved for Li metal anodes at r.t.. The suppression of lithium dendrite of the obtained GM is further demonstrated in Li/GM/LiFePO 4 cells with a high discharge capacity (142 mAh g À 1 at r.t. and 160 mAh g À 1 at 50°C) and a superior cycling stability. This research provides a new strategy for developing lithium metal batteries with high stability and long cycle life.

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Enhanced wetting properties of a polypropylene separator for a lithium-ion battery by hyperthermal hydrogen induced cross-linking of poly(ethylene oxide)

Abstract: HHIC technology was employed to increase the electrolyte wetting properties of polypropylene separators by cross-linking PEO on their surfaces.

Cited by 72 publications

References 38 publications

Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

Cross-Linking the Surface of Cured Polydimethylsiloxane via Hyperthemal Hydrogen Projectile Bombardment

A Compact Gel Membrane Based on a Blend of PEO and PVDF for Dendrite‐Free Lithium Metal Anodes

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