A robust solid electrolyte interphase layer coated on polyethylene separator surface induced by Ge interlayer for stable Li-metal batteries

Yue, Chuang; Sun, Seho; Jang, Moongyu; Park, Eunkyung; Son, Byoungkuk; Son, Hyunsu; Liu, Zhiming; Wang, Donghai; Paik, Ungyu; Song, Taeseup

doi:10.1016/j.electacta.2020.137703

Cited by 10 publications

(5 citation statements)

References 49 publications

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“…For this reason, modified separators with high mechanical strength, ionic conductivity, and lithophilicity are particularly significant to suppress Li dendrites. Recently, many metals that can reduce the overpotential of Li deposition such as Zn, Nb, Bi, and Ge, etc., have been used to modify separators to manage the Li + flux and inhibit the formation of Li dendrites. However, the preparation of these metal-coatings usually requires techniques including magnetron sputtering, thermal evaporation, and so on, which call for relatively complex equipment.…”

Section: Introductionmentioning

confidence: 99%

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Liu

et al. 2022

ACS Appl. Energy Mater.

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The uncontrollable growth of lithium (Li) dendrites impedes the development of practical applications for the long-awaited lithium metal batteries. In this work, a strategy is proposed to protect the Li anode with a composite separator of in situ formed SnO2 and hydroxypropyl methyl cellulose (HPMC) on the polyethylene (PE) substrate. Based on the use of SnO2/HPMC@PE separator, the Li||Li cell has an ultralong cycle life of more than 2000 h and ultralow-voltage hysteresis of 11.1 mV, whereas the cell with PE separator only has the cycle life of 800 h and the voltage hysteresis of up to 222.9 mV. Moreover, Li||LiNi0.6Co0.2Mn0.2O2 (NCM622) has an initial discharge capacity of 142.3 mAh g–1 and a capacity retention of 77.9% after 250 cycles at 1 C, which are higher than those of PE (140.6 mAh g–1 with retention of 59.5%). All of the enhanced performance can be ascribed to a regulable SEI film that can be formed on the Li foil in direct contact with the SnO2 layer, which decreases the Li nucleation overpotential and facilitates ultimately uniform Li deposition. This work demonstrates the feasibility of using a modified separator to achieve stable Li metal batteries.

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Section: Introductionmentioning

confidence: 99%

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Liu

et al. 2022

ACS Appl. Energy Mater.

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“…Yue et al [58] used a facile thermal evaporation technique to plate Germanium (Ge) film on the PE separator as the modified layer (Figure 2i). In the process of the Li-Ge reaction, the Ge interlayer spontaneously formed a folded dense SEI layer and firmly fixed it on the surface of the modified separator, which can provide a more active surface area for Li + deposition to achieve superior electrochemical performance.…”

Section: Modification By Metal Coatingsmentioning

confidence: 99%

“…Optical photographs of coatings. (a) Cu[54], (c) Au[55], (e) Mg[56], (g) Zn[57], (i) Ge[58], (k) Nb[59]. (b) Capacity retention with cycle numbers at 1 C rate [54].…”

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confidence: 99%

Coatings on Lithium Battery Separators: A Strategy to Inhibit Lithium Dendrites Growth

Cheng,

Tan,

et al. 2023

Molecules

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Lithium metal is considered a promising anode material for lithium secondary batteries by virtue of its ultra-high theoretical specific capacity, low redox potential, and low density, while the application of lithium is still challenging due to its high activity. Lithium metal easily reacts with the electrolyte during the cycling process, resulting in the continuous rupture and reconstruction of the formed SEI layer, which reduces the cycling reversibility. On the other hand, repeated lithium plating/stripping processes can lead to uncontrolled growth of lithium dendrites and a series of safety issues caused by short-circuiting of the battery. Currently, modification of the battery separator layer is a good strategy to inhibit lithium dendrite growth, which can improve the Coulombic efficiency in the cycle. This paper reviews the preparation, behavior, and mechanism of the modified coatings using metals, metal oxides, nitrides, and other materials on the separator to inhibit the formation of lithium dendrites and achieve better stable electrochemical cycles. Finally, further strategies to inhibit lithium dendrite growth are proposed.

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“…However, hard carbon materials with sodium intercalation mechanisms exhibit low working voltages and are prone to sodium dendrite formation, posing safety concerns. [50] At the same time, its theoretical specific capacity is also quite limited. In recent years, there has been an increasing number of studies on novel high-performance sodium ion storage materials, including carbon materials, [51,52] metals, [53,54] alloys, [55,56] metal oxides, [57,58] sulfides, [59,60] phosphorus and metal phosphides.…”

Section: Introductionmentioning

confidence: 99%

Metal Phosphide Anodes in Sodium‐Ion Batteries: Latest Applications and Progress

Wang,

Li,

Chen

et al. 2024

Small

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Sodium‐ion batteries (SIBs), as the next‐generation high‐performance electrochemical energy storage devices, have attracted widespread attention due to their cost‐effectiveness and wide geographical distribution of sodium. As a crucial component of the structure of SIBs, the anode material plays a crucial role in determining its electrochemical performance. Significantly, metal phosphide exhibits remarkable application prospects as an anode material for SIBs because of its low redox potential and high theoretical capacity. However, due to volume expansion limitations and other factors, the rate and cycling performance of metal phosphides have gradually declined. To address these challenges, various viable solutions have been explored. In this paper, the recent research progress of metal phosphide materials for SIBs is systematically reviewed, including the synthesis strategy of metal phosphide, the storage mechanism of sodium ions, and the application of metal phosphide in electrochemical aspects. In addition, future challenges and opportunities based on current developments are presented.

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A robust solid electrolyte interphase layer coated on polyethylene separator surface induced by Ge interlayer for stable Li-metal batteries

Cited by 10 publications

References 49 publications

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Coatings on Lithium Battery Separators: A Strategy to Inhibit Lithium Dendrites Growth

Metal Phosphide Anodes in Sodium‐Ion Batteries: Latest Applications and Progress

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A robust solid electrolyte interphase layer coated on polyethylene separator surface induced by Ge interlayer for stable Li-metal batteries

Cited by 10 publications

References 49 publications

Uniform Lithium Deposition Achieved by SnO2/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Uniform Lithium Deposition Achieved by SnO2/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Coatings on Lithium Battery Separators: A Strategy to Inhibit Lithium Dendrites Growth

Metal Phosphide Anodes in Sodium‐Ion Batteries: Latest Applications and Progress

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Product

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Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries