A CF<sub>4</sub> plasma functionalized polypropylene separator for dendrite-free lithium metal anodes

Cao, Shengling; He, Xin; Chen, Manlin; Han, Yu; Jiang, Kai; Wang, Kangli; Zhou, Min

doi:10.1039/d2ta09763j

Cited by 8 publications

(4 citation statements)

References 48 publications

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“…Furthermore, they also contribute to the formation of a LiF-rich solid electrolyte interface (SEI) film. The XPS tests in Figure 15c confirm the presence of fluorine-containing functional groups, with binding energies for C-O, semi-ionic C-F, covalent C-F bonds and CF2 groups observed in the CFP-PP separator [230] .…”

Section: (C) High-resolution Xps Spectra Of C 1s There Are Only Signa...mentioning

confidence: 69%

“…Shifting the focus from biocompatibility enhancement to battery technology optimization, fluorine-containing functional groups also play a crucial role in the chemical grafting process (Figure 15c). For improving lithium metal anode batteries, fluorine-containing functional groups are introduced onto a polypropylene (PP) separator with an RF CF4 plasma treatment [230] . The resulting grafted polar groups enhance the PP separator's affinity for Li-ions, leading to improved wettability, ion conductivity and lithium-ion transference number.…”

Section: (C) High-resolution Xps Spectra Of C 1s There Are Only Signa...mentioning

confidence: 99%

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From Basics to Frontiers: A Comprehensive Review of Plasma-Modified and Plasma-Synthesized Polymer Films

Dufour

2023

Polymers

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This comprehensive review begins by tracing the historical development and progress of cold plasma technology as an innovative approach to polymer engineering. The study emphasizes the versatility of cold plasma derived from a variety of sources including low-pressure glow discharges (e.g., radiofrequency capacitively coupled plasmas) and atmospheric pressure plasmas (e.g., dielectric barrier devices, piezoelectric plasmas). It critically examines key operational parameters such as reduced electric field, pressure, discharge type, gas type and flow rate, substrate temperature, gap, and how these variables affect the properties of the synthesized or modified polymers. This review also discusses the application of cold plasma in polymer surface modification, underscoring how changes in surface properties (e.g., wettability, adhesion, biocompatibility) can be achieved by controlling various surface processes (etching, roughening, crosslinking, functionalization, crystallinity). A detailed examination of Plasma-Enhanced Chemical Vapor Deposition (PECVD) reveals its efficacy in producing thin polymeric films from an array of precursors. Yasuda’s models, Rapid Step-Growth Polymerization (RSGP) and Competitive Ablation Polymerization (CAP), are explained as fundamental mechanisms underpinning plasma-assisted deposition and polymerization processes. Then, the wide array of applications of cold plasma technology is explored, from the biomedical field, where it is used in creating smart drug delivery systems and biodegradable polymer implants, to its role in enhancing the performance of membrane-based filtration systems crucial for water purification, gas separation, and energy production. It investigates the potential for improving the properties of bioplastics and the exciting prospects for developing self-healing materials using this technology.

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Section: (C) High-resolution Xps Spectra Of C 1s There Are Only Signa...mentioning

confidence: 69%

Section: (C) High-resolution Xps Spectra Of C 1s There Are Only Signa...mentioning

confidence: 99%

From Basics to Frontiers: A Comprehensive Review of Plasma-Modified and Plasma-Synthesized Polymer Films

Dufour

2023

Polymers

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“…Because of the high affinity between lithium ions and oxygen-containing functional groups. In addition to hydroxyl (AOH), 37 nitrile (ACN), 40 and polar fluorocarbon (ACF) 41 can also have the same effect. In general, the advantages of polar groups can be summarized as follows: (a) The interaction between polar groups and Li + promoted the orderly layer-by-layer deposition of Li + and inhibited the growth of Li dendrites.…”

Section: Morphology Of Li@gg-cu Electrodementioning

confidence: 99%

Suppressing Li dendrite by a guar gum natural polymer film for high‐performance lithium metal anodes

Fei,

Du,

Liu

et al. 2024

J of Applied Polymer Sci

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Lithium dendrites pose a major hurdle for enhancing the energy density of lithium metal batteries, and the artificial solid electrolyte interface layer offers a potential solution. In this work, a cost‐effective and environmentally friendly guar gum film is applied to the artificial protective layer. The guar gum artificial solid electrolyte interface (SEI) layer formed naturally, enriched with OH and AOA groups, displayed exceptional electrochemical stability, and achieved an impressively high transference number of 0.88 for lithium‐ion movement. In symmetric cells, the Li@GG‐Cu anode displays remarkable cycling performance even during extended periods. This is evidenced by its ability to maintain a surface capacity of approximately 850 h (1 mA cm−2, 1 mAh cm−2). In addition, when utilizing a complete cell setup comprising a LiFPO4 cathode (weighing 1.5 mg cm−2) and anode coated with a guar gum film, the capacity retention of an impressive 96.2% showcases outstanding preservation of battery performance over time even after 700 cycles. This performance surpasses that of a lithium foil electrode (87.1%) and a copper anode with lithium deposition (0%). Our work exhibits a promising material for a novel configuration of artificial SEI, effectively stabilizing lithium metal anode.

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“…With the cost of lithium resources increasing quickly, potassiumion batteries (KIBs) have been regarded as one of the promising substitutes of lithium-ion batteries (LIBs) owning to their abundant resource and similar redox potential (−2.93 V vs standard hydrogen electrode (SHE) for K/K + , −3.04 V vs SHE for Li + /Li). [1][2][3][4][5][6][7] Furthermore, the fast diffusion kinetics of potassium DOI: 10.1002/adma.202401943 ions possess the ability to realize high power density for KIBs. Noteworthy, for large-scale energy storage applications, except for the low cost and high energy/power densities, long-term cycling stability is also in urgent need.…”

Section: Introductionmentioning

confidence: 99%

In Situ Ions Induced Formation of K_xF‐Rich SEI Layers toward Ultrastable Life of Potassium‐Ion Batteries

Wang,

He,

Zhou

et al. 2024

Advanced Materials

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Engineering F‐rich SEI layers is regarded as an effective strategy to enable the long‐term cycling stability of potassium ion batteries (KIBs). However, in the conventional KPF6 carbonate electrolytes, it is challenging to form F‐containing SEI layers due to the inability of KPF6 to decompose into KxF. Herein, AlCl3 is employed as a novel additive to change the chemical environment of the KPF6 carbonate electrolyte. Firstly, due to the large charge‐to‐radius ratio of Al3+, the Al‐containing groups in the electrolyte can easily capture F from PF6− and accelerate the formation of KxF in SEI layer. In addition, AlCl3 also reacts with trace H2O or solvents in the electrolytes to form Al2O3, which can further act as an HF scavenger. The “self‐induced formation” of F‐rich SEI layers (KxF and AlF3) and “self‐elimination” of unexpected species (H2O and HF) guarantee the excellent long‐term cycling stability of KIBs. Upon incorporating AlCl3 into conventional KPF6 carbonate electrolyte, the hard carbon (HC) anode exhibits an ultra‐long lifespan of 10000 cycles with a high coulombic efficiency of ∼100%. When coupled with PTCDA, the full cell exhibits a high capacity retention of 81% after 360 cycles‐significantly outperforming cells using conventional electrolytes. Moreover, PTCDA||HC pouch cell using AlCl3 added KPF6 electrolyte deliver a reversible capacity of 93 mAh g−1 with capacity retention of 86% after 80 cycles. This research paves new avenues for advancing electrolyte engineering towards developing durable batteries tailored for large‐scale energy storage applications.This article is protected by copyright. All rights reserved

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A CF₄ plasma functionalized polypropylene separator for dendrite-free lithium metal anodes

Abstract: Lithium metal is recognized as the promising anode material for next-generation high-energy-density batteries, but uncontrollable lithium dendrites inhibit their further applications. In this paper, fluorine-containing functional groups were grafted on...

Cited by 8 publications

References 48 publications

From Basics to Frontiers: A Comprehensive Review of Plasma-Modified and Plasma-Synthesized Polymer Films

From Basics to Frontiers: A Comprehensive Review of Plasma-Modified and Plasma-Synthesized Polymer Films

Suppressing Li dendrite by a guar gum natural polymer film for high‐performance lithium metal anodes

In Situ Ions Induced Formation of K_xF‐Rich SEI Layers toward Ultrastable Life of Potassium‐Ion Batteries

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A CF4 plasma functionalized polypropylene separator for dendrite-free lithium metal anodes

Abstract: Lithium metal is recognized as the promising anode material for next-generation high-energy-density batteries, but uncontrollable lithium dendrites inhibit their further applications. In this paper, fluorine-containing functional groups were grafted on...

Cited by 8 publications

References 48 publications

From Basics to Frontiers: A Comprehensive Review of Plasma-Modified and Plasma-Synthesized Polymer Films

From Basics to Frontiers: A Comprehensive Review of Plasma-Modified and Plasma-Synthesized Polymer Films

Suppressing Li dendrite by a guar gum natural polymer film for high‐performance lithium metal anodes

In Situ Ions Induced Formation of KxF‐Rich SEI Layers toward Ultrastable Life of Potassium‐Ion Batteries

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Product

Resources

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A CF₄ plasma functionalized polypropylene separator for dendrite-free lithium metal anodes

In Situ Ions Induced Formation of K_xF‐Rich SEI Layers toward Ultrastable Life of Potassium‐Ion Batteries