A Review of Functional Separators for Lithium Metal Battery Applications

Jang, Jooyoung; Oh, Jiwoong; Jeong, Hyebin; Kang, Woosuk; Jo, Changshin

doi:10.3390/ma13204625

Cited by 106 publications

(69 citation statements)

References 166 publications

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“…Undoubtedly, apart from the three kinds of new separators, several other advanced materials have great potential to be processed into separators for LIB, such as non-oxide inorganic compounds, γ-Li3PO4 oxides, garnet-type oxides, NASICON-type oxides, perovskite-type oxides, single crystalline silicon and the like. [39] It is not just that scientists are discovering new materials for separators, they are also building mathematical and physical models to carry on the analytical work towards separators to find better materials theoretically. [40] As the technique of LIB matures, separators with higher performances are required.…”

Section: Other Novel Of Lib Separatorsmentioning

confidence: 99%

Advanced separators for lithium-ion batteries

Chen

Zhan

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The separator technology is a major area of interest in lithium-ion batteries (LIBs) for high-energy and high-power applications such as portable electronics, electric vehicles and energy storage for power grids. Separators play an essential part that physically prevents direct contact between positive and negative electrodes while acting as an electrolyte reservoir to transport lithium ions. The characteristics of different separators would directly affect the performance under cell abuse; hence separators are crucial for battery safety. This paper introduces the characteristics of separators, means to improve traditional commercial polymeric separators and novel materials for separators. Other novel high-performance separators are also briefly discussed in this paper. Insights from this paper illustrate that various strategies could enhance the performance of separators, and better performance and safety can be achieved in separators in high-energy lithium-ion batteries.

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Section: Other Novel Of Lib Separatorsmentioning

confidence: 99%

Advanced separators for lithium-ion batteries

Chen

Zhan

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Puncture strength is another parameter frequently used in membrane evaluation. It is believed that a high puncture strength is required to prevent internal micro-short circuits caused by the growth of Li dendrites through the separator or by foreign materials, such as small metallic debris, in lithium-based batteries [55,56]. Typical reported puncture strength values range from 200 to 600 gf.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Manufacturing Processes of Microporous Polyolefin Separators for Lithium-Ion Batteries and Correlations between Mechanical and Physical Properties

Mun¹,

Won

2021

Crystals

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Rechargeable lithium-ion batteries (LIBs) have emerged as a key technology to meet the demand for electric vehicles, energy storage systems, and portable electronics. In LIBs, a permeable porous membrane (separator) is an essential component located between positive and negative electrodes to prevent physical contact between the two electrodes and transfer lithium ions. Among several types, microporous polyolefin membranes have dominated the commercial separator market for LIBs operated with liquid electrolytes, favored for their chemical and electrochemical stability, high mechanical strength, uniform pore size, and inexpensive manufacturing and materials cost. In this review, we summarize the principles and theoretical background underlying conventional manufacturing processes and newly emerging microporous polyolefin separators. Based on their mechanical and physical properties, as collected from the literature, we introduce a number of processing type-dependent characteristics and universal correlations among their properties. This will provide a macroscopic view on the subject and a guideline for the development of next-generation separators.

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“…On the material level of the cathode, LFP could be one of the promising candidates [2]. Besides the continuous improvement of cathode materials, electrolytes [3] and separators [4,5] or the replacement of graphite by metal anodes [6], the cathode structure could be an essential factor to achieve these goals. In general, porous electrodes with low tortuosity provide efficient ion flow and ensure uniform replenishment of the lithium supply, especially at high discharge rates [7].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Model-Based Investigation of Thick LiFePO4 Electrode Design Parameters

Franke‐Lang

Kowal

2021

Modelling

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The electrification of the powertrain requires enhanced performance of lithium-ion batteries, mainly in terms of energy and power density. They can be improved by optimising the positive electrode, i.e., by changing their size, composition or morphology. Thick electrodes increase the gravimetric energy density but generally have an inefficient performance. This work presents a 2D modelling approach for better understanding the design parameters of a thick LiFePO4 electrode based on the P2D model and discusses it with common literature values. With a superior macrostructure providing a vertical transport channel for lithium ions, a simple approach could be developed to find the best electrode structure in terms of macro- and microstructure for currents up to 4C. The thicker the electrode, the more important are the direct and valid transport paths within the entire porous electrode structure. On a smaller scale, particle size, binder content, porosity and tortuosity were identified as very impactful parameters, and they can all be attributed to the microstructure. Both in modelling and electrode optimisation of lithium-ion batteries, knowledge of the real microstructure is essential as the cross-validation of a cellular and lamellar freeze-casted electrode has shown. A procedure was presented that uses the parametric study when few model parameters are known.

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A Review of Functional Separators for Lithium Metal Battery Applications

Cited by 106 publications

References 166 publications

Advanced separators for lithium-ion batteries

Advanced separators for lithium-ion batteries

Manufacturing Processes of Microporous Polyolefin Separators for Lithium-Ion Batteries and Correlations between Mechanical and Physical Properties

Electrochemical Model-Based Investigation of Thick LiFePO4 Electrode Design Parameters

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