Revisiting the Role of Physical Confinement and Chemical Regulation of 3D Hosts for Dendrite-Free Li Metal Anode

Ye, Shufen; Chen, Xingjia; Zhang, Rui; Jiang, Yu; Huang, Fanyang; Huang, Huijuan; Yao, Yu; Jiao, Shuhong; Chen, Xiang; Zhang, Qiang; Yu, Yan

doi:10.1007/s40820-022-00932-3

Cited by 26 publications

(13 citation statements)

References 85 publications

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“…EIS was introduced to further explore the P‐Cu@Cu 6 Sn 5 mechanism in lithium metal anodes. [ 39 ] Before cycling, the R ct of the interface between the bare Li foil and the electrolyte is 126 Ω, while that of the P‐Cu@Cu 6 Sn 5 /Li is only 44 Ω (Figure 5f). After 50 cycles, the R ct of P‐Cu@Cu 6 Sn 5 /Li decreases to the minimum value of 9 Ω.…”

Section: Resultsmentioning

confidence: 99%

In Situ Reaction Fabrication of a Mixed‐Ion/Electron‐Conducting Skeleton Toward Stable Lithium Metal Anodes

Yao

et al. 2023

Energy & Environ Materials

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Lithium metal batteries are emerging as a strong candidate in the future energy storage market due to its extremely high energy density. However, the uncontrollable lithium dendrites and volume change of lithium metal anodes severely hinder its application. In this work, the porous Cu skeleton modified with Cu6Sn5 layer is prepared via dealloying brass foil following a facile electroless process. The porous Cu skeleton with large specific surface area and high electronic conductivity effectively reduces the local current density. The Cu6Sn5 can react with lithium during the discharge process to form lithiophilic Li7Sn2 in situ to promote Li‐ions transport and reduce the nucleation energy barrier of lithium to guide the uniform lithium deposition. Therefore, more than 300 cycles at 1 mA cm−2 are achieved in the half‐cell with an average Coulombic efficiency of 97.5%. The symmetric cell shows a superior cycle life of more than 1000 h at 1 mA cm−2 with a small average hysteresis voltage of 16 mV. When coupled with LiFePO4 cathode, the full cell also maintains excellent cycling and rate performance.

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Section: Resultsmentioning

confidence: 99%

In Situ Reaction Fabrication of a Mixed‐Ion/Electron‐Conducting Skeleton Toward Stable Lithium Metal Anodes

Yao

et al. 2023

Energy & Environ Materials

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“…LMA possesses unique superiority in energy density because it owns the lowest molar mass and reduction potential among metallic elements [ 49 , 50 ]. However, notorious dendrite propagation gives rise to large volume expansion, low reversibility and potential safety hazards [ 51 ]. In polymer electrolytes, heterogeneous interface, limited ion transport and low mechanical strength are the primary reasons driving dendrite growth [ 52 ].…”

Section: Key Issues In the Development Of Piesmentioning

confidence: 99%

Tailoring Practically Accessible Polymer/Inorganic Composite Electrolytes for All-Solid-State Lithium Metal Batteries: A Review

Liang

Wang

et al. 2023

Nano-Micro Lett.

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Highlights The current issues and recent advances in polymer/inorganic composite electrolytes are reviewed. The molecular interaction between different components in the composite environment is highlighted for designing high-performance polymer/inorganic composite electrolytes. Inorganic filler properties that affect polymer/inorganic composite electrolyte performance are pointed out. Future research directions for polymer/inorganic composite electrolytes compatible with high-voltage lithium metal batteries are outlined. Abstract Solid-state electrolytes (SSEs) are widely considered the essential components for upcoming rechargeable lithium-ion batteries owing to the potential for great safety and energy density. Among them, polymer solid-state electrolytes (PSEs) are competitive candidates for replacing commercial liquid electrolytes due to their flexibility, shape versatility and easy machinability. Despite the rapid development of PSEs, their practical application still faces obstacles including poor ionic conductivity, narrow electrochemical stable window and inferior mechanical strength. Polymer/inorganic composite electrolytes (PIEs) formed by adding ceramic fillers in PSEs merge the benefits of PSEs and inorganic solid-state electrolytes (ISEs), exhibiting appreciable comprehensive properties due to the abundant interfaces with unique characteristics. Some PIEs are highly compatible with high-voltage cathode and lithium metal anode, which offer desirable access to obtaining lithium metal batteries with high energy density. This review elucidates the current issues and recent advances in PIEs. The performance of PIEs was remarkably influenced by the characteristics of the fillers including type, content, morphology, arrangement and surface groups. We focus on the molecular interaction between different components in the composite environment for designing high-performance PIEs. Finally, the obstacles and opportunities for creating high-performance PIEs are outlined. This review aims to provide some theoretical guidance and direction for the development of PIEs.

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“…The 3D host structure has a larger active surface area, which effectively reduces the surface current density, thus inhibiting the growth of Li dendrites. Meanwhile, the abundant pore structure inside the 3D host can alleviate the volume change caused by Li deposition/stripping process, so that the host materials have better structural stability. − Liu et al designed a TiC/C core–shell 3D nanowire array skeleton to prepare a TiC/C/Li composite Li metal anode. TiC/C arrays indicate better volume regulation, strong mechanical support, and high Li + /electron transfer paths, due to the TiC/C matrix channel design.…”

Section: Challenges For the Hosts Of LI Metal Anodementioning

confidence: 99%

Gradient Host for Bottom-Up Deposition of Lithium Metal Anode

Shen,

Liu,

Tang

et al. 2023

Ind. Eng. Chem. Res.

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Lithium metal batteries have been attracting an abundance of attention recently as a powerful competitor of the next-generation advanced energy storage technologies. However, lithium dendrite formation can result in decreased battery lifespan and even safety issues, inhibiting the widespread application of lithium metal batteries. The conductive hosts of lithium metal anode are proven to be an effective method to prevent lithium dendrite formation and achieve outstanding electrochemical performance of lithium metal batteries. However, the surface deposition of Li ions decreases the utilization of the conductive host. Therefore, this Review introduces the design principle and recent advances to render the bottom-up deposition of a lithium metal anode. On one hand, conductivity and lithiophilicity gradient hosts are summarized to realize the “bottom-up” lithium deposition and efficiently limit the growth of lithium dendrites. On the other hand, the future prospects and challenges of host design associated with the “bottom-up” lithium deposition technique are discussed. This Review intends to provide novel insights for the development of gradient materials design and lithium metal batteries with long lifespan and high safety.

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Revisiting the Role of Physical Confinement and Chemical Regulation of 3D Hosts for Dendrite-Free Li Metal Anode

Cited by 26 publications

References 85 publications

In Situ Reaction Fabrication of a Mixed‐Ion/Electron‐Conducting Skeleton Toward Stable Lithium Metal Anodes

In Situ Reaction Fabrication of a Mixed‐Ion/Electron‐Conducting Skeleton Toward Stable Lithium Metal Anodes

Tailoring Practically Accessible Polymer/Inorganic Composite Electrolytes for All-Solid-State Lithium Metal Batteries: A Review

Gradient Host for Bottom-Up Deposition of Lithium Metal Anode

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