A facile surface chemistry route to a stabilized lithium metal anode

Liang, Xiao; Pang, Quan; Kochetkov, Ivan; Sempere, Marina Safont; Huang, He; Sun, Xiaoqi; Nazar, Linda F.

doi:10.1038/nenergy.2017.119

Cited by 952 publications

(743 citation statements)

References 41 publications

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“…As a result, the carbon-coated lithium anode showed a high Coulombic efficiency of ≈99% for more than 150 cycles and smooth anode surface after long lithium plating/stripping processes. [42] In these hybrid films, the lithium alloys enable the fast migration of lithium ions and the lithium salts play as an electronically insulating component, effectively preventing dendrite growth during repeated plating/stripping at a practical current density of 2 mA cm −2 for over 1400 h. Meanwhile, other hybrid films such as LiF-Ni, and Li 3 N-styrene butadiene rubber also demonstrated that such hybrid films are effective to improve the electrochemical performance of metallic lithium anodes. [36] Although the above mentioned protective films possess high strengths and good chemical stabilities, their ionic conductivities are commonly low, insufficient for the fast transportation of lithium ions.…”

Section: Surficial Engineering Of Metallic Lithium Anodes By Inactivementioning

confidence: 99%

A Material Perspective of Rechargeable Metallic Lithium Anodes

Wang

Yang

2018

Advanced Energy Materials

111

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Rechargeable lithium‐based batteries are long considered as the most promising candidates for application in various electronic devices, electric vehicles, and even electrical grids owing to their ultrahigh energy densities. However, to date, metallic lithium‐based batteries are still far from practical applications due to the low Coulombic efficiency and fast capacity decay of lithium anodes. The poor electrochemical performances of metallic lithium anodes are inherently related to random growth of lithium dendrites and infinite volume charge of lithium anodes. In this review, the failure mechanisms of metallic lithium anodes are summarized and ascribed to the unstable and inhomogeneous solid electrolyte interphase, uneven distributions of electric field, and lithium‐ion flux during the lithium plating processes. Correspondingly, efficient strategies for mitigating these problems, including surficial engineering, electric field, and lithium‐ion flux regulation are discussed from the perspective of anode materials. Finally, an outlook is proposed for the design and fabrication of next‐generation rechargeable metallic lithium anodes that aims to address the intrinsic problems of metallic lithium anodes.

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Section: Surficial Engineering Of Metallic Lithium Anodes By Inactivementioning

confidence: 99%

A Material Perspective of Rechargeable Metallic Lithium Anodes

Wang

Yang

2018

Advanced Energy Materials

111

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“…Different directions how to improve Li-S battery cycle life have been explored, like synthesis of the optimized porous host matrices with active sites for polysulfide anchoring, 4,5 design and optimization of separators which can effectively suppress polysulfide cross communication between electrodes 6,7 and protection of lithium by artificial SEI 8 or by additives. 9 While most of the research was performed in the binary mixture of solvents using alkyl ethers (glymes) and heterocyclic acetyl (dioxolane), less attention has been paid to the development of new electrolytes for Li-S batteries.…”

mentioning

confidence: 99%

Polysulfides Formation in Different Electrolytes from the Perspective of X-ray Absorption Spectroscopy

Dominko

Vižintin

Aquilanti

et al. 2017

J. Electrochem. Soc.

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Li-S batteries are promising energy storage technology for the future, however there two major problems remained which need to be solved before successful commercialization. Capacity fading due to polysulfide shuttle and corrosion of lithium metal are directly connected with the type and quantity of electrolyte used in the cells. Several recent works show dependence of the electrochemical behavior of Li-S batteries on type of the electrolyte. In this work we compare and discuss a discharge mechanism of sulfur conversion in three different electrolytes based on measurements with sulfur K-edge XAS. The sulfur conversion mechanism in the ether based electrolytes, the most studied type of solvents in the Li-S batteries, which are enabling high solubility of polysulfides are compared with the fluorinated ether based electrolytes with a reduced polysulfide solubility and in carbonate based electrolytes with the sulfur confined into a ultramicroporous carbon. In all three cases the sulfur reduction proceeds through polysulfide intermediate phases with a difference on the type polysulfides detected at different steps of discharge. Electrification of road transport has increased the pressure on materials' scientists to improve performance of the current Li-ion batteries and to develop new advanced high energy battery technologies. 1Among several post lithium-ion technologies, the lithium sulfur (Li-S) batteries are recognized as the most promising for commercialization in the near future. A combination of lithium and sulfur in the electrochemical cell corresponds to the theoretical energy density of 2600 Wh/kg, while the maximum practically accessible energy density is predicted to be close to 600 Wh/kg.2,3 This is much higher compared to Li-ion batteries and besides that, sulfur is inexpensive and naturally abundant. Nevertheless, problems related to the solubility of polysulfides in the electrolyte and the related redox shuttle phenomena cause short cycle life, potential safety problems, poor cycling efficiency, and relative fast self-discharge. Additional problems of Li-S batteries are very low electronic conductivity of the both end members in the discharge and charge process (i.e. sulfur and Li 2 S) and extensive corrosion of the metal lithium anode.Different directions how to improve Li-S battery cycle life have been explored, like synthesis of the optimized porous host matrices with active sites for polysulfide anchoring, 4,5 design and optimization of separators which can effectively suppress polysulfide cross communication between electrodes 6,7 and protection of lithium by artificial SEI 8 or by additives. 9 While most of the research was performed in the binary mixture of solvents using alkyl ethers (glymes) and heterocyclic acetyl (dioxolane), less attention has been paid to the development of new electrolytes for Li-S batteries. 10 Reasons for that are nested in the requirements which should be fulfilled in the development of new formulations. First of all, electrolytes used in the electrochemical cells must...

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“…In recent years, various approaches to stabilize Li metal anode (LMA) have been investigated, including artificial protective layers [6][7][8][9][10][11] and host structures. [25][26][27] Herein, we report a facile approach to form a ternary surface that can effectively protect LMA. Pretreatment of the Li anode is another efficient approach to protect it without relying on a thick external coating layer.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Stability of Li Metal Anodes by Synergetic Control of Nucleation and the Solid Electrolyte Interphase

Peng

Song

Huai

et al. 2019

Advanced Energy Materials

123

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Use of a protective coating on a lithium metal anode (LMA) is an effective approach to enhance its coulombic efficiency and cycling stability. Here, a facile approach to produce uniform silver nanoparticle‐decorated LMA for high‐performance Li metal batteries (LMBs) is reported. This effective treatment can lead to well‐controlled nucleation and the formation of a stable solid electrolyte interphase (SEI). Ag nanoparticles embedded in the surface of Li anodes induce uniform Li plating/stripping morphologies with reduced overpotential. More importantly, cross‐linked lithium fluoride‐rich interphase formed during Ag+ reduction enables a highly stable SEI layer. Based on the Ag‐LiF decorated anodes, LMBs with LiNi1/3Mn1/3Co1/3O2 cathode (≈1.8 mAh cm−2) can retain >80% capacity over 500 cycles. The similar approach can also be used to treat sodium metal anodes. Excellent stability (80% capacity retention in 10 000 cycles) is obtained for a Na||Na3V2(PO4)3 full cell using a Na‐Ag‐NaF/Na anode cycled in carbonate electrolyte. These results clearly indicate that synergetic control of the nucleation and SEI is an efficient approach to stabilize rechargeable metal batteries.

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A facile surface chemistry route to a stabilized lithium metal anode

Cited by 952 publications

References 41 publications

A Material Perspective of Rechargeable Metallic Lithium Anodes

A Material Perspective of Rechargeable Metallic Lithium Anodes

Polysulfides Formation in Different Electrolytes from the Perspective of X-ray Absorption Spectroscopy

Enhanced Stability of Li Metal Anodes by Synergetic Control of Nucleation and the Solid Electrolyte Interphase

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