A robust, highly stretchable ion-conducive skin for stable lithium metal batteries

Zhou, Zixuan; Feng, Yangyang; Wang, Jialin; Liang, Bing; Li, Yanhuai; Song, Zhongxiao; Itkis, Daniil M.; Song, Jiangxuan

doi:10.1016/j.cej.2020.125254

Cited by 54 publications

(38 citation statements)

References 55 publications

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“…Highly lithiophilic silver nanoparticles combined with polydopamine and graphene oxide have also been coated on Cu to facilitate stable lithium cycling ( Wondimkun et al, 2021 ). In addition, other polymers like PVDF ( Gao et al, 2019 ), PMMA ( Zhou et al, 2020 ), and PEO ( Assegie et al, 2018 ) have also been developed to coat Cu foil.…”

Section: Engineering Strategies For Anode Current Collectormentioning

confidence: 99%

Rational Engineering of Anode Current Collector for Dendrite-Free Lithium Deposition: Strategy, Application, and Perspective

Jia

Liu

et al. 2022

Front. Chem.

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Lithium metal anodes have attracted extensive attention due to their high theoretical capacity and low redox potential. However, low Coulombic efficiency, serious parasitic reaction, large volume change, and dendrite growth during cycling have hindered their practical application. The engineering of an anode current collector provides important advances to solve these problems, eliminate excess lithium usage, and substantially increase the energy density. In this review, we summarize the engineering strategies of an anode current collector with emphasis on different methods and applications in lithium metal-based systems. Finally, the perspectives and challenges of current collector engineering for lithium metal anode are discussed.

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Section: Engineering Strategies For Anode Current Collectormentioning

confidence: 99%

Rational Engineering of Anode Current Collector for Dendrite-Free Lithium Deposition: Strategy, Application, and Perspective

Jia

Liu

et al. 2022

Front. Chem.

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“…A coated artificial SEI film with a high ionic conductivity can promote lithium ion transport and improve discharge performance, while the use of electrolyte additives is beneficial to adjust the in situ SEI film that is formed on the lithium anode surface to improve the storage performance of the lithium primary battery. The main principle of electrolyte film-forming additives is that during the reaction between the lithium and electrolyte, the additive molecule gains electrons at a higher reduction potential than the solvent molecule for forming a stable SEI film, thus preventing the electrolyte decomposition and improving the performance of the lithium primary battery [13]. Electrolyte additives do not change the properties of the electrolyte, but mainly act on the modification of the SEI layer, for example, a dense and more uniform SEI film with good mechanical properties that can resist volume deformation well, such that the battery can be used in long-term storage and maintain stability before use.…”

Section: Introductionmentioning

confidence: 99%

FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery

Zhou

Tang

et al. 2021

Energies

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The solid electrolyte interphase (SEI) film plays a significant role in the capacity and storage performance of lithium primary batteries. The electrolyte additives are essential in controlling the morphology, composition and structure of the SEI film. Herein, fluoroethylene carbonate (FEC) is chosen as the additive, its effects on the lithium primary battery performance are investigated, and the relevant formation mechanism of SEI film is analyzed. By comparing the electrochemical performance of the Li/AlF3 primary batteries and the microstructure of the Li anode surface under different conditions, the evolution model of the SEI film is established. The FEC additive can decrease the electrolyte decomposition and protect the lithium metal anode effectively. When an optimal 5% FEC is added, the discharge specific capacity of the Li/AlF3 primary battery is 212.8 mAh g−1, and the discharge specific capacities are respectively 205.7 and 122.3 mAh g−1 after storage for 7 days at room temperature and 55 °C. Compared to primary electrolytes, the charge transfer resistance of the Li/AlF3 batteries with FEC additive decreases, indicating that FEC is a promising electrolyte additive to effectively improve the SEI film, increase discharge-specific capacities and promote charge transfer of the lithium primary batteries.

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“…Currently, in order to solve these problems related to Li dendrites, researchers have proposed various methods, such as optimization of electrolyte compositions, − artificial SEI layers on the Li-metal anode, , 3D composite Li anodes, − guiding matrixes on Li anode, and modified current collectors . Although many strategies are designed to stabilize the SEI layer and/or reduce the effective applied current density on the lithium metal, these strategies are mainly focused on the lithium metal and the electrolyte. , So far, very few works have been done to solve or alleviate these problems by modifying the separator. − Therefore, it is a novel and feasible way to suppress the formation of lithium dendrite by modifying the separator with multifunctional materials.…”

Section: Introductionmentioning

confidence: 99%

“…12,14 Based on this, preventing the formation of lithium dendrites is an important step in the practical application of rechargeable LMBs with high energy density. 11,15 Currently, in order to solve these problems related to Li dendrites, researchers have proposed various methods, such as optimization of electrolyte compositions, 16−18 artificial SEI layers on the Li-metal anode, 19,20 3D composite Li anodes, 21−23 guiding matrixes on Li anode, 24 and modified current collectors. 25 Although many strategies are designed to stabilize the SEI layer and/or reduce the effective applied current density on the lithium metal, these strategies are mainly focused on the lithium metal and the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Lithiophilic 3D VN@N-rGO as a Multifunctional Interlayer for Dendrite-Free and Ultrastable Lithium-Metal Batteries

Zhang

Chen

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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It is still a big challenge to effectively suppress dendrite growth, which increases the safety and life of lithium-metal-based high energy/power density batteries. To address such issues, herein we design and fabricate a lithiophilic VN@N-rGO as a multifunctional layer on commercial polypropylene (PP) separator, which is constructed by a thin N-rGO nanosheet-wrapped VN nanosphere with a uniform pore distribution, relatively high lithium ionic conductivity, excellent electrolyte wettability, additional lithium-ion diffusion pathways, high mechanical strength, and reliable thermal stability, which are beneficial to regulate the interfacial lithium ionic flux, resulting in the formation of a stable and homogeneous current density distribution on Li-metal electrodes and hard modified separators that can resist dendrites piercing. Consequently, the growth of Li dendrite is effectively suppressed, and the cycle stability of lithium-metal batteries is significantly improved. In addition, even at a high current density of 10 mA cm–2 and cutoff areal capacity of 5 mAh cm–2, the Li|Li symmetric batteries with VN@N-rGO/PP separators still work very well even over 2500 h, exhibiting ultrahigh cycling stability. This work presents rational design ideas and a facile fabrication strategy of a lithiophilic 3D porous multifunctional interlayer for dendrite-free and ultrastable lithium-metal-based batteries.

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A robust, highly stretchable ion-conducive skin for stable lithium metal batteries

Cited by 54 publications

References 55 publications

Rational Engineering of Anode Current Collector for Dendrite-Free Lithium Deposition: Strategy, Application, and Perspective

Rational Engineering of Anode Current Collector for Dendrite-Free Lithium Deposition: Strategy, Application, and Perspective

FEC Additive for Improved SEI Film and Electrochemical Performance of the Lithium Primary Battery

Lithiophilic 3D VN@N-rGO as a Multifunctional Interlayer for Dendrite-Free and Ultrastable Lithium-Metal Batteries

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