Lithiophilic Ag Nanoparticle Layer on Cu Current Collector toward Stable Li Metal Anode

Hou, Zhen; Yu, Yikang; Wang, Wenhui; Zhao, Xixia; Di, Qian; Chen, Qianwen; Chen, Wen; Liu, Yulian; Quan, Zewei

doi:10.1021/acsami.9b01521

Cited by 132 publications

(75 citation statements)

References 49 publications

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“…A simple, scalable, and green strategy to build the lithiophilic layer on the surface of Cu collector is therefore highly desired. Silver‐modified copper foils have been proved good electrochemical properties on LMBs due to its good lithiophilicity …”

Section: Introductionmentioning

confidence: 99%

Large‐Scale Modification of Commercial Copper Foil with Lithiophilic Metal Layer for Li Metal Battery

Cui

Zhai

Yang

et al. 2020

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and long cycle life are urgently pursued. [1][2][3][4] However, current lithium-ion batteries (LIBs) have almost reached their theoretical limitation. [5][6][7][8] So, developing novel electrode materials with high energy and power densities as well as long cycle life is of great significance. Li metal electrodes, hailed as "Holy Grail" electrode, show incomparable advantages including high specific capacity (3860 mAh g −1 ) and low electrochemical potential (−3.040 V vs standard hydrogen electrode) and have been considered as the most promising next-generation electrode materials for Li-S, Li-air batteries, and so on. [9][10][11] However, the lithium metal batteries (LMBs) always suffer dendritic Li during the repeated plating/stripping process, which not only causes the formation of lots of "dead Li" and blocks the Li + / electron transportation between the bulk Li and the electrolyte and furtherly results in the low coulombic efficiency (CE) but also is the main culprit in piercing the separator, giving rise to the internal short circuits and finally leading to the serious security risks. [12][13][14] In addition, the unstable solid electrolyte interphase (SEI) is formed repeatedly on the surface of Li metal during the charge-discharge process, which leads to the nonuniform Li ionic flux and further aggravates the growth of dendritic Li as well as depletes the electrolyte. [15][16][17][18] All these disadvantages lead to low CE and poor cyclability and further impede the commercialization of LMBs.In recent years, many attempts have been exerted to eliminate the formation of Li dendrite and enhance the cyclability of LMBs. Fabricating stable intrinsic SEI layer by the liquid electrolyte additives can improve partly the electrochemical performance. [19][20][21][22][23] Similarly, preparing artificial SEI layer with high Young's Modulus on the surface of the Li metal is another common way to suppress the dendrite growth. [24][25][26][27] Modified separator with functional materials for LMBs is also adopted to inhibit the formation of dendritic Li and shows some progress. [28] Solid electrolytes with high Young's modulus have exhibited good resistance to lithium dendrites in previous reports. [29,30] Although some good results are achieved by these strategies, the complicated synthesis process, high cost, great weight or instability during long-term cycle limit their practical applications. More recently, designing 3D collectors with a lithiophilic surface as host for storing Li metal, such as modified 3D Cu foam or Ni foam, shows some progress since large specific area of 3D structure is beneficial to decreasing the local current density and regulating the distribution of electric fieldThe application and development of lithium metal battery are severely restricted by the uncontrolled growth of lithium dendrite and poor cycle stability. Uniform lithium deposition is the core to solve these problems, but it is difficult to be achieved on commercial Cu collectors. In this work, a simple and commercially viable stra...

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Section: Introductionmentioning

confidence: 99%

Large‐Scale Modification of Commercial Copper Foil with Lithiophilic Metal Layer for Li Metal Battery

Cui

Zhai

Yang

et al. 2020

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“…This self-formed SEI is generally inhomogeneous and brittle, leading to non-uniform Li deposition and the formation of Li dendrites, which may permeate the separators and result in potential safety hazards [21][22][23][24] . On the other hand, Li dendrites easily break the fragile and soft SEI, and the exposed fresh Li metal subsequently reacts with electrolyte, causing a low CE and short cycle life [25][26][27] . Therefore, constructing a stable SEI on the surface of Li metal anode is believed as an effective strategy to tackle above issues.…”

Section: Introductionmentioning

confidence: 99%

Towards high-performance lithium metal anodes via the modification of solid electrolyte interphases

Hou

Zhang

Wang

et al. 2020

Journal of Energy Chemistry

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“…During the battery cycling, the Solid Electrolyte Interface (the SEI film) to rupture and re-repair continuously since the uncontrollable Li dendrites. It will trigger the serious side reaction to consume the electrolyte and Li (Hou et al, 2019). More severely, the Li dendrites will pierce through the separator, and cause serious safety hazard (the battery short-circuited, producing a large amount of joule heat and triggering an explosion; Peng et al, 2016; Yang et al, 2017; Zhang et al, 2018; Hou et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…It will trigger the serious side reaction to consume the electrolyte and Li (Hou et al, 2019). More severely, the Li dendrites will pierce through the separator, and cause serious safety hazard (the battery short-circuited, producing a large amount of joule heat and triggering an explosion; Peng et al, 2016; Yang et al, 2017; Zhang et al, 2018; Hou et al, 2019). Thus, the Li anode cannot be commercialized without addressing the above problems (Cheng et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Toward High-Performance Li Metal Anode via Difunctional Protecting Layer

Shen

Fang

et al. 2019

Front. Chem.

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Li-metal batteries are the preferred candidates for the next-generation energy storage, due to the lowest electrode potential and high capacity of Li anode. However, the dangerous Li dendrites and serious interface reaction hinder its practical application. In this work, we construct a difunctional protecting layer on the surface of the Li anode (the AgNO 3 -modified Li anode, AMLA) for Li-S batteries. This stable protecting layer can hinder the corrosion reaction with intermediate polysulfides (Li 2 S x , 4 ≤ x ≤ 8) and suppress the Li dendrites by regulating Li metal nucleation and depositing Li under the layer uniformly. The AMLA can cycle more than 50 h at 5 mA cm −2 with the steady overpotential of lower than 0.2 V and show high capacity of 666.7 mAh g −1 even after 500 cycles at 0.8375 mA cm −2 in Li-S cell. This work makes great contribution to the protection of the Li anode and further promotes the practical application.

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Lithiophilic Ag Nanoparticle Layer on Cu Current Collector toward Stable Li Metal Anode

Cited by 132 publications

References 49 publications

Large‐Scale Modification of Commercial Copper Foil with Lithiophilic Metal Layer for Li Metal Battery

Large‐Scale Modification of Commercial Copper Foil with Lithiophilic Metal Layer for Li Metal Battery

Towards high-performance lithium metal anodes via the modification of solid electrolyte interphases

Toward High-Performance Li Metal Anode via Difunctional Protecting Layer

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