Thermally Conductive AlN‐Network Shield for Separators to Achieve Dendrite‐Free Plating and Fast Li‐Ion Transport toward Durable and High‐Rate Lithium‐Metal Anodes

Guo, Yue; Wu, Qiang; Liu, Liwei; Li, Guochang; Yang, Lijun; Wang, Xizhang; Ma, Yanwen; Hu, Zheng

doi:10.1002/advs.202200411

Cited by 31 publications

(18 citation statements)

References 49 publications

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“…125 Guo and co-workers constructed a layer of aluminum nitride (AlN) nanowire network with a thickness of ∼6.5 μm on a PP separator (AlN NW-PP) by facile vacuum filtration. 126 As shown in Figure 8b, the excellent thermal conductivity (319 W m −1 K −1 ) of the AlN network promoted heat dissipation and formed a uniform heat distribution, which was favorable for the homogeneous plating of lithium. In addition, the AlN NW-PP also exhibited super electrolyte-philic properties (contact angle close to 0°) due to the micro/nanostructure and surface chemical polarity of the AlN network (Figure 8c).…”

Section: Using Nanofibers Tomentioning

confidence: 92%

Section: Nanofibrous Materials For Separatorsmentioning

confidence: 99%

“…Liu et al coated a 3 μm-thick silver nanoparticle loaded porous CNF layer on commercial separator, which not only improved the lithium loading capacity but also reduced the actual current density on the electrode surface, thus effectively guiding the smooth plating of lithium . Guo and co-workers constructed a layer of aluminum nitride (AlN) nanowire network with a thickness of ∼6.5 μm on a PP separator (AlN NW-PP) by facile vacuum filtration . As shown in Figure b, the excellent thermal conductivity (319 W m –1 K –1 ) of the AlN network promoted heat dissipation and formed a uniform heat distribution, which was favorable for the homogeneous plating of lithium.…”

Section: Nanofibrous Materials For Separatorsmentioning

confidence: 99%

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Advances in Nanofibrous Materials for Stable Lithium-Metal Anodes

Zhao

Yan

et al. 2022

ACS Nano

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Lithium metal is regarded as the most potential anode material for improving the energy density of batteries due to its high specific capacity and low electrode potential. However, the practical application of lithium-metal anodes (LMAs) still faces severe challenges such as uncontrollable dendrites growth and large volume expansion. The development of functional nanomaterials has brought opportunities for the revival of LMAs. Among them, nanofibrous materials show great application potential for LMAs protection due to their distinct functional and structural features. Here, the latest research progress in nanofibrous materials for LMAs is systematically outlined. First, the problems existing in the practical application of LMAs are analyzed. Then, prospective strategies and recent research progress toward stable LMAs based on nanofibrous materials are summarized from the aspects of artificial protective layers, three-dimensional frameworks, separators, and solid-state electrolytes. Finally, the future development of nanofibrous materials for the protection of lithium-metal batteries is summarized and prospected. This review establishes a close connection between nanofibrous materials and LMA modification and provides insight for the development of high-safety lithium-metal batteries.

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Section: Using Nanofibers Tomentioning

confidence: 92%

Section: Nanofibrous Materials For Separatorsmentioning

confidence: 99%

Section: Nanofibrous Materials For Separatorsmentioning

confidence: 99%

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Advances in Nanofibrous Materials for Stable Lithium-Metal Anodes

Zhao

Yan

et al. 2022

ACS Nano

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“…This layer not only increased the capacity for loading lithium but also decreased the real current density on the electrode surface, thereby guiding the smooth plating of lithium (Figure 7e). Through vacuum filtration, Guo et al 133 created an aluminum nitride (AlN) nanowire network layer about 6.5 μm thick on a polypropylene separator (AlN NW-PP) (Figure 7f). This layer's excellent thermal conductivity (319 W m −1 K −1 ) encouraged heat dissipation and created a uniform heat distribution that was ideal for the homogeneous plating of lithium.…”

Section: Separatormentioning

confidence: 99%

Recent Progress on Nanomodification Applied in Anodes of Rechargeable Li Metal Batteries

Yao,

Li,

Chen

et al. 2023

ACS Appl. Energy Mater.

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Lithium metal anodes (LMAs) are considered one of the most promising anode materials for lithium metal batteries due to their high theoretical specific capacity (3860 mAh g −1 ) and low anode potential (−3.04 V compared to the standard hydrogen potential). However, the further application of lithium metal batteries is hindered by problems such as lithium dendrite growth and volume change of the anode. Fortunately, to address these issues in lithium metal batteries, various applications of nanomodification technologies have been proposed for lithium metal anodes, such as using nanomaterials and constructing nanostructures. These nanomodification technologies have standardized the plating/stripping behavior of lithium, significantly improving the electrochemical performance and lithium morphology of LMAs. This brief review systematically summarizes the latest research progress in LMA nanomodification technology to inhibit lithium dendrite growth. First, the problems of LMAs in practical applications are analyzed. Then, we summarize the forward-looking strategies and the latest research progress based on nanomaterials and nanostructures from the perspectives of current collectors, protection of the interface layer, separators, and all-solid-state lithium batteries. Finally, the future development of nanomodification technology for the protection of lithium metal batteries is summarized and prospected.

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“…[6][7][8][9][10] To solve these problems, various strategies have been proposed, including electrode engineering, electrolyte design, artificial solid electrolyte layer construction, separator film modification, etc. [11][12][13][14][15][16][17][18] Among all these strategies, the electrolyte modulation and electrode engineering are most effective and widely used. The rational modulation of the electrolyte can promote the robust SEI formation and improves the uniform lithium-ion flux.…”

mentioning

confidence: 99%

Negatively Charged Holey Titania Nanosheets Added Electrolyte to Realize Dendrite‐Free Lithium Metal Battery

Luo

Liu

Zhao

et al. 2023

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growth and unstable solid electrolyte interface (SEI), which leads to low coulombic efficiency, capacity fading, and safety issues. [6][7][8][9][10] To solve these problems, various strategies have been proposed, including electrode engineering, electrolyte design, artificial solid electrolyte layer construction, separator film modification, etc. [11][12][13][14][15][16][17][18] Among all these strategies, the electrolyte modulation and electrode engineering are most effective and widely used. The rational modulation of the electrolyte can promote the robust SEI formation and improves the uniform lithium-ion flux. The related works include the design of high concentration electrolytes, dual-salt/ dual-solvent electrolyte, inorganic additive, organic additive, solid state electrolyte, and so on. [19][20][21][22][23][24][25] The electrode engineering is generally used to suppress the dendritic growth through regulating lithium-ion flux on the anode surface. [26,27] The commonly applied methods include the building of 3D conductive host to decease the local current density and homogenize space charge distribution, and decorating the surface with lithiophilic sites to regulate the uniform lithium nucleation and growth. [28][29][30][31] However, either the electrolyte modulation or electrode design has its own advantages and disadvantages. Electrolyte modulation is simple, but not very effective to regulate the ion flux. Electrode engineering can more effectively regulate lithium-ion flux on the electrode surface, but the process is complicated. Therefore, we are thinking the possibility to combine the merits of these two strategies into one.Considering the simplicity of adding additives into electrolyte, we propose a new method for the rational electrode design through the concept of electrolyte additive. By adding the materials used to construct the 3D electrode into the electrolyte, they will self-assemble into hierarchical structure on the current collector under the electrical field between the cathode and anode. In this case, the electrode modification will be much easier and the homogeneity of the modification on the Li metal anode can also be well controlled, even in large size anodes. However, to realize the proposed idea, several basic requirements should be satisfied: (1) The additives are supposed to be stable for a certain period in the common lithium battery electrolyte; (2) The additives should have charge to move under electric fields to realize self-adaptive electrode surface modification; (3) The Electrolyte modulation and electrode structure design are two common strategies to suppress dendrites growth on Li metal anode. In this work, a self-adaptive electrode construction method to suppress Li dendrites growth is reported, which merges the merits of electrolyte modulation and electrode structure design strategies. In detail, negatively charged titania nanosheets with densely packed nanopores on them are prepared. These holey nanosheets in the electrolyte move spontaneously onto the anode under elec...

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Thermally Conductive AlN‐Network Shield for Separators to Achieve Dendrite‐Free Plating and Fast Li‐Ion Transport toward Durable and High‐Rate Lithium‐Metal Anodes

Cited by 31 publications

References 49 publications

Advances in Nanofibrous Materials for Stable Lithium-Metal Anodes

Advances in Nanofibrous Materials for Stable Lithium-Metal Anodes

Recent Progress on Nanomodification Applied in Anodes of Rechargeable Li Metal Batteries

Negatively Charged Holey Titania Nanosheets Added Electrolyte to Realize Dendrite‐Free Lithium Metal Battery

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