Cuprite-coated Cu foam skeleton host enabling lateral growth of lithium dendrites for advanced Li metal batteries

Yue, Xin‐Yang; Wang, Weiwen; Wang, Qin‐Chao; Meng, Jingke; Wang, Xinxin; Song, Yun; Fu, Zheng‐Wen; Wu, Xiaojing; Zhou, Yong‐Ning

doi:10.1016/j.ensm.2018.12.007

Cited by 140 publications

(71 citation statements)

References 46 publications

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“…For instance, diverse electrolyte additives were used to prevent side reactions of Li with organic electrolytes (Grande et al, 2015;Li et al, 2015;Zheng et al, 2017;Zhang X. Q. et al, 2018). Solid-state electrolytes with high mechanical strength and lithiophilic three-dimensional (3D) hosts with increased specific surface area were also developed for LMBs to enhance the safety of Li anodes (Han et al, 2017;Wang S. H. et al, 2017;Jiang et al, 2018;Qi et al, 2018;Yue et al, 2018;Chen X. et al, 2019). Although certain improvements in stability of Li metal anodes have been made, some shortcomings should be considered when they are applied in practical application of LMBs.…”

Section: Introductionmentioning

confidence: 99%

Lithiophilic Silver Coating on Lithium Metal Surface for Inhibiting Lithium Dendrites

Zuo

Zhuang

et al. 2020

Front. Chem.

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Li metal batteries (LMBs) are known as the ideal energy storage candidates for the future rechargeable batteries due to the high energy density. However, uncontrolled Li dendrites growing during charge/discharge process causes extremely low coulombic efficiency and short lifespan. In this work, a thin lithiophilic layer of Ag was coated on the bare Li surface via a thermal evaporation method, which alleviated volume variations and suppressed Li dendrites growth during cycling. As a result, a long lifespan of 250 h at a current density of 1 mA cm −2 was achieved in the symmetric cell when using the Ag-modified Li foil (Ag@Li). The LiFePO 4 |Li full cell demonstrated an excellent cycling performance with a high specific capacity of 131 mAh g −1 even after 300 cycles at 0.5 C. This study offers a suitable method for stabilizing Li metal anodes in LMBs.

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Section: Introductionmentioning

confidence: 99%

Lithiophilic Silver Coating on Lithium Metal Surface for Inhibiting Lithium Dendrites

Zuo

Zhuang

et al. 2020

Front. Chem.

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“…[13,14] The "dead" Li with high impedance leads to poor kinetics and shortened lifespan of the battery. [20][21][22][23][24][25][26] A series of host frameworks have been reported, such as 3D CoO/Ni foam skeleton, [27] coralloid carbon fiber scaffolds, [28] lithiophilic Cu-Ni core-shell nanowire network, [29] and 3D carbon fiber framework. One approach is the coating of an artificial SEI with high mechanical strength onto the electrode surface.…”

mentioning

confidence: 99%

“…In order to remit the volume change, great efforts have been made to design porous frameworks to accommodate Li. [20][21][22][23][24][25][26] A series of host frameworks have been reported, such as 3D CoO/Ni foam skeleton, [27] coralloid carbon fiber scaffolds, [28] lithiophilic Cu-Ni core-shell nanowire network, [29] and 3D carbon fiber framework. [30] The host frameworks can not only accommodate the volume change of Li during cycling, but also reduce the local current density.…”

mentioning

confidence: 99%

“Top‐Down” Li Deposition Pathway Enabled by an Asymmetric Design for Li Composite Electrode

Yue

Bao

et al. 2019

Advanced Energy Materials

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safety issue due to dendrite growth during the repeated Li stripping/plating process. [7][8][9] On one hand, the surface defects of the bare Li serve as the active sites to increase the local current density, leading to uneven Li deposition. [10] On the other hand, the "hostless" feature of Li metal results in huge volume change during cycling, causing unstable solid electrolyte interphase (SEI). [11] As a result, the fresh Li exposure created by SEI fracturing consumes electrolyte continuously, leading to low coulombic efficiency. [12] As such, the Li dendrites develop in an uncontrolled fashion that can eventually pierce the separator and cause short circuit. Moreover, the fractures of dendrites during repeated Li deposition/stripping result in "dead" Li sections composed of isolated Li fragments surrounded by e −insulating SEI. [13,14] The "dead" Li with high impedance leads to poor kinetics and shortened lifespan of the battery. [15] In order to inhibit Li dendrite growth and build stable SEI layers, considerable efforts have been made. One approach is the coating of an artificial SEI with high mechanical strength onto the electrode surface. [16][17][18][19] However, because of the volume change of Li metal, the structural integrity of the protective layers is hard to be maintained during prolonged running. In order to remit the volume change, great efforts have been made to design porous frameworks to accommodate Li. [20][21][22][23][24][25][26] A series of host frameworks have been reported, such as 3D CoO/Ni foam skeleton, [27] coralloid carbon fiber scaffolds, [28] lithiophilic Cu-Ni core-shell nanowire network, [29] and 3D carbon fiber framework. [30] The host frameworks can not only accommodate the volume change of Li during cycling, but also reduce the local current density. [31][32][33][34] More importantly, the porous structure of these frameworks can suppress the dendrite formation by changing Li plating/ stripping behavior. [35][36][37] It should be noted that most of the reported composited electrodes possess symmetric structure for their two sides, especially for the electrodes fabricated by thermal infusion method. [38] However, as the anode for the battery, the two sides of the electrode are in different environments: one side contacts with the separator, while the other side faces the current collector. The requirements and functions for the two sides are thus quite different. [39] The side facing the separator should be facile for Li-ion transportation.Designing Li composite electrodes with host frameworks for accommodating Li metal has been considered to be an effective approach to suppress Li dendrites. Herein, an asymmetric design of a Mo net/Li metal film (MLF) composite electrode is developed by an inverted thermal infusion method. The asymmetric MLF electrode has a dense oxide passivated layer on the top side, a porous Mo net matrix on the back side, and active Li layer in between. The back side has a larger specific area and higher electric field than the top side, which contacts with ...

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“…However, limited by the “lithiophobic” nature of 3D Cu or Ni hosts, the process of Li deposition usually demonstrates a large nucleation barrier. Some lithiophilic materials were introduced into metal‐based host to reduce it, such as nitrogen‐doped carbon, ZnO, and so on . A 3D Cu mesh anchored with a layer of CuO was reported to increase lithiophilic and realize uniform Li deposition (Figure d) .…”

Section: Host Materialsmentioning

confidence: 99%

A Review of Composite Lithium Metal Anode for Practical Applications

Shi

Zhang

Shen

et al. 2019

Adv Materials Technologies

130

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potential (−3.040 V vs standard hydrogen electrode). [8][9][10] Objectively, the energy density of Li batteries should take all parts of a battery into considerations instead of only anode. In order to achieve high-energydensity Li batteries, practical conditions including limited Li (<10 mAh cm −2 ), low negative/positive capacity (N/P) ratio (<3), and lean electrolyte are necessary. [11,12] In addition, fast charge is imperative with the popularization of portable electronics and electrical vehicles. [13] Consequently, high charge current density (>3 mA cm −2 ) is a confronted issue.Nowadays, the practical applications of Li batteries are still hindered by the formation of Li dendrites, rapid pulverizations of Li metal, and volume fluctuation. [14][15][16] Tremendous efforts have been devoted to disclosing the mechanism of Li plating/stripping and developing strategies to regulate its behaviors thus extending the lifespan of Li batteries during the past half century, including electrolyte formulations, [17][18][19][20][21][22][23][24][25][26][27] interfacial modifications, [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] solid-state electrolytes, [45][46][47][48][49][50][51][52][53][54][55] composite anodes, [56][57][58][59][60][61][62][63] and so on. [64] Thereinto, composite Li anode emerges as a promising strategy to regulate Li plating/stripping behaviors and promote the advances of Li batteries.Generally, a composite Li anode is composed of a 3D host and fresh Li metal. The 3D host is endowed with the unique surface chemistry and interconnecting structure. [65] The superiorities contributed by composite Li anode mainly include:(1) improving electronic conductivity, such as decreasing areal current density and avoiding the generation of "dead Li." Conductive hosts with high specific surface area, such as carbon-based and metal-based hosts, can decrease areal current density to prolong the time for depletion of ion at the anode surface to induce dendritic Li according to Sand's time model. [66] Therefore, the formation of Li dendrites will be effectively inhibited at low areal current density and the cyclability can be improved effectively.(2) Homogenizing Li-ion flux over the surface of Li metal. The distribution of Li ions over the surface of Li anode impacts the subsequent Li plating/stripping behaviors significantly. Uniform Li plating/ stripping can be improved by regulating the interactions between lithiophilic sites on 3D host surface, such as polar functional groups, [67,68] and Li ion to homogenize Li-ion flux. [69] (3) Maintaining dimensional stability of anode. 3D hosts can confine plating Li in the inside pores to avoid the Lithium (Li) metal is considered as a promising anode candidate for nextgeneration batteries owing to its extremely high specific capacity and low reduction potential. However, Li metal anode is still hindered by uncontrolled Li dendrites and extreme volume fluctuation. Composite Li metal anode emerges as an attractive strategy to suppress Li dendrites and ...

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Cuprite-coated Cu foam skeleton host enabling lateral growth of lithium dendrites for advanced Li metal batteries

Cited by 140 publications

References 46 publications

Lithiophilic Silver Coating on Lithium Metal Surface for Inhibiting Lithium Dendrites

Lithiophilic Silver Coating on Lithium Metal Surface for Inhibiting Lithium Dendrites

“Top‐Down” Li Deposition Pathway Enabled by an Asymmetric Design for Li Composite Electrode

A Review of Composite Lithium Metal Anode for Practical Applications

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