Breathable Artificial Interphase for Dendrite‐Free and Chemo‐Resistive Lithium Metal Anode

Song, Gyujin; Hwang, Chihyun; Song, Woo‐Jin; Lee, Jung Hyun; Lee, Sangyeop; Han, Dong‐Yeob; Kim, Jonghak; Park, Hyesung; Song, Hyun‐Kon; Park, Soo‐Jin

doi:10.1002/smll.202105724

Cited by 11 publications

(7 citation statements)

References 49 publications

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“…The tilt‐view SEM image also confirmed that the SPF could accept such high amounts of Li metal as the functional host over the theoretical thickness of Li metal deposition (5 μm at the electrodeposition of 1 mAh cm −2 ) in Figure 3h because the PAV layer (30 μm), consisting of ionic polymers, densely stacked Li metal through bottom‐up accumulation, and SBS layer (10 μm) as an elastic barrier on top were flexibly controlled by stretching the polymer structure and blocking the Li penetration and potential of Li dendrite across the SBS layer. [ 41 ] Furthermore, cross‐section SEM images of Cu@SPF–Li showed the different amounts of Li electrodeposition to confirm the bottom‐up growth mechanism of the Li metal anode (Figure S8, Supporting Information). The densely packed Li with reasonable thickness was deposited from the bottom and gradually filled the void space in the host.…”

Section: Resultsmentioning

confidence: 93%

Dual‐Functional Stacked Polymer Fibers for Stable Lithium Metal Batteries in Carbonate‐Based Electrolytes

et al. 2022

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Lithium (Li) metal has long been thought to be an ideal anode material for high‐energy‐density Li metal batteries (LMBs). Nonetheless, a variety of safety risks and short cycle life due to uncontrollable Li dendrite growth limit its practical application. Here, a novel polymer‐based 3D host composed of stacked polymer fibers (SPF) is purposefully designed using a simple electrospinning method to achieve dual‐functional properties that endow bottom‐up Li filling and morphologically regulate Li metal deposition over the host structure. As a result, the SPF allows for uniform Li‐ion flux in the electrode, leading to densely packed Li deposition and further stable cycling in conventional carbonate‐based electrolytes. Besides, a full cell paired with LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode results in a high‐energy‐density battery with a low negative/positive capacity ratio and a wide operating temperature range. This study presents a rational design for improving the stability and safety of Li metal anodes in conventional carbonate‐based electrolytes for advanced LMBs.

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Section: Resultsmentioning

confidence: 93%

Dual‐Functional Stacked Polymer Fibers for Stable Lithium Metal Batteries in Carbonate‐Based Electrolytes

et al. 2022

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“…6(a), and a pair of typical cathodic and anodic peak reflected a reversible couple redox of Fe 3+ /Fe 2+ . 61 Subsequently, the peak intensity of the insertion gradually increases with an increase in the scanning rates, indicating the fast kinetics of redox reaction at the electrode interface. Moreover, the difference in the current response values of each anodic peak is attributed to the de-intercalation of Li + in the artificial SEI.…”

Section: Resultsmentioning

confidence: 97%

In situ interface engineering of highly nitrogen-rich triazine-based covalent organic frameworks for an ultra-stable, dendrite-free lithium-metal anode

Yue,

Wang,

Chen

et al. 2024

Energy Environ. Sci.

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“…[40,[191][192][193][194][195][196] Additionally, the flexible polymer can accommodate the volume change at the electrodes to alleviate damage to the electrolyte. [197,198] The overall performance of the layered electrolyte can be adjusted by combining layers with different properties. Because of the enhanced ion-conduction behavior, many of the single-layered composite electrolytes mentioned above are potential candidates for improving interfacial properties in multi-layer designs.…”

Section: Sandwich Layersmentioning

confidence: 99%

Advanced Composite Solid Electrolytes for Lithium Batteries: Filler Dimensional Design and Ion Path Optimization

Zheng

et al. 2023

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organic liquid electrolytes hinder lithium batteries in achieving higher energy density, longer working life, and safer performance. [12,13] Solid electrolytes not only improve the long-term thermal and electrochemical stabilities but also obviate the need for separators and increase the energy density. [14][15][16][17] From these concerns, solid electrolytes are regarded as a potential substituent to improve the cycle performance of lithium batteries.Solid electrolytes are generally categorized as solid polymer electrolytes, inorganic solid electrolytes, and composite solid electrolytes. [16,18,19] Solid polymer electrolytes, such as poly(ethylene oxide) (PEO) and poly(vinylidene fluoride) (PVDF), are favored for their chemical stability, low density, low cost, processability, and wettability. [20][21][22][23] However, the applications are restricted by their low ionic conductivity at room temperature (typically from 10 −6 to 10 −5 S cm −1 ). Therefore, much research has been devoted to synthesizing solid polymer electrolytes with high ionic conductivity via increasing free volume and constructing fast transport paths, such as applying covalent organic framework-based polymer, [24,25] single lithium-ion-conducting polymer, [26,27] crosslinked polymer network, [28,29] and adding plasticizers. [30,31] Inorganic solid electrolytes, such as Li 7 La 3 Zr 2 O 12 (LLZO, garnet-type) and Li 0.33 La 0.56 TiO 3 (LLTO, perovskite-type), are single-ion conductors with superior lithium-ion conductivity (typically from 10 −4 to 10 −2 S cm −1 ). [32][33][34][35] However, inorganic solid electrolytes usually have a defect of high interfacial contact resistance because of the poor wettability at the electrode and electrolyte interface. [36,37] Moreover, recent studies have proved that the ion transport at the interface and the ionic conductivity of electrolytes are both essential to maintain a stable interface between electrode and electrolyte. [38][39][40] Therefore, constructing composite solid electrolytes by utilizing the advantages of both polymeric and inorganic materials is generally viewed as a practicable solution for nextgeneration lithium batteries. [16,41,42] Many recent studies have shown that the ion-conduction behavior is significantly influenced by the filler structures in a polymer/salt matrix, in which the effect is determined by the natural characteristics of the fillers and the interaction Composite solid electrolytes are considered to be the crucial components of all-solid-state lithium batteries, which are viewed as the next-generation energy storage devices for high energy density and long working life. Numerous studies have shown that fillers in composite solid electrolytes can effectively improve the ion-transport behavior, the essence of which lies in the optimization of the ion-transport path in the electrolyte. The performance is closely related to the structure of the fillers and the interaction between fillers and other electrolyte components including polymer matrices and lithium salts. In this rev...

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Breathable Artificial Interphase for Dendrite‐Free and Chemo‐Resistive Lithium Metal Anode

Cited by 11 publications

References 49 publications

Dual‐Functional Stacked Polymer Fibers for Stable Lithium Metal Batteries in Carbonate‐Based Electrolytes

Dual‐Functional Stacked Polymer Fibers for Stable Lithium Metal Batteries in Carbonate‐Based Electrolytes

In situ interface engineering of highly nitrogen-rich triazine-based covalent organic frameworks for an ultra-stable, dendrite-free lithium-metal anode

Advanced Composite Solid Electrolytes for Lithium Batteries: Filler Dimensional Design and Ion Path Optimization

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