Ultralight PEDOT Functionalized Separators toward High‐Performance Lithium Metal Anodes

Yao, Wei; Xu, Min; Qiu, Weijie; Wang, Jinshan; Sun, Yuxi; Xu, Jianguang; Zhang, Qinfang

doi:10.1002/celc.202100677

Cited by 9 publications

(2 citation statements)

References 55 publications

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“…Porous CPs find a prominent role in the field of next‐generation energy storage systems. Extensively studied CPs, including PPy, PANI, PEDOT, and their derivatives, serve as functional binders in electrodes, coatings for separators, active materials in electrodes, and interfacial layers between electrolytes and electrodes 25,61,62 . The integration of porous structures into CPs improves electrolyte and Li + ion diffusion, essential for mitigating dendrite growth by addressing Li + ion concentration imbalances.…”

Section: Electrocatalysts and Batteriesmentioning

confidence: 99%

Porous pathways: Exploring the future of conducting polymers

Ham,

Sim,

Choi

et al. 2024

Bulletin Korean Chem Soc

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Conducting polymers (CPs) possess the intrinsic attractive properties of conventional polymers, coupled with unique electronic characteristics reminiscent of metals or semiconductors. Nanostructured CPs have recently gained significant interest for their distinct advantages over bulk counterparts. They demonstrate potential applications in energy storage devices, sensors, and catalysts, attributed to their large surface areas and shortened charge transport paths. A crucial structural aspect in this context includes introducing porous morphologies into CPs, and enhancing their functionality through interconnected channels. In this review, various synthetic methods of nanostructured CPs are introduced, emphasizing two‐dimensional (2D) configurations. The primary objective is to achieve high‐performance devices with highly organized stacking of conjugated backbones. Particular attention is placed on integrating 2D structures and porous morphologies into CPs through ice‐assisted methods and interfacial synthesis. The review also highlights successful applications of porous 2D CPs in practical devices and explores insights into future developments in the porous CPs field.

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Section: Electrocatalysts and Batteriesmentioning

confidence: 99%

Porous pathways: Exploring the future of conducting polymers

Ham,

Sim,

Choi

et al. 2024

Bulletin Korean Chem Soc

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“…In addition, separators must be chemically and electrochemically stable in LIBs. 14,19,20 They should be inert in the battery when fully discharged and charged. 21,22 In some applications, separators have to withstand the corrosive nature of the electrolyte at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Towards separator safety of lithium-ion batteries: a review

Tong,

2024

Mater. Chem. Front.

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Enhancing Cellulose‐Based Separator with Polyethyleneimine and Polyvinylidene Fluoride‐Hexafluoropropylene Interpenetrated 3D Network for Lithium Metal Batteries

et al. 2022

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Aside from the electrolyte, a separator is another important component in lithium‐based batteries that has a direct impact on the safety feature and electrochemical performances. To overcome the thermal shrinkage and poor electrolyte affinity of commonly used polyolefin separators, cellulose‐based separators are appealing due to their abundant polar functional groups, thermal stability, and environmental friendliness, especially for large‐sized and high‐energy‐density batteries. Herein, a porous three‐dimensional (3D) network of polymer cellulose‐based separator (denoted as PIC) modified with polyethyleneimine (PEI) and polyvinylidene fluoride‐hexafluoropropylene (PVDF‐HFP) was prepared using a non‐solvent induced phase separation approach. The lithium metal batteries consisting of a PIC separator can deliver a specific capacity of up to 114 mAh g−1 even at a high C‐rate of 8 C (1.36 A g−1) after 300 cycles. Such superior performances of the lithium metal batteries can be attributed to the good wetting ability (390 % electrolyte absorption) and high ionic conductivity (0.754 mS cm−1) of the as‐prepared PIC separator. More importantly, the introduction of polyethyleneimine as a cross‐linking agent significantly improves the mechanical strength of the separator, promotes the uniform deposition of lithium, and compatibility with high voltage (4.4 V) cathode materials LiNi0.8Mn0.1Co0.1O2. This work demonstrates a new strategy for the separator design for high‐performance lithium metal battery applications.

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Ultralight PEDOT Functionalized Separators toward High‐Performance Lithium Metal Anodes

Cited by 9 publications

References 55 publications

Porous pathways: Exploring the future of conducting polymers

Porous pathways: Exploring the future of conducting polymers

Towards separator safety of lithium-ion batteries: a review

Enhancing Cellulose‐Based Separator with Polyethyleneimine and Polyvinylidene Fluoride‐Hexafluoropropylene Interpenetrated 3D Network for Lithium Metal Batteries

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