Competitive Solvation Enhanced Stability of Lithium Metal Anode in Dual-Salt Electrolyte

Zhang, Simeng; Yang, Gaojing; Liu, Zepeng; Li, Xiaoyun; Wang, Xuefeng; Chen, Renjie; Wu, Feng; Wang, Zhaoxiang; Chen, Liquan

doi:10.1021/acs.nanolett.1c00848

Cited by 101 publications

(102 citation statements)

References 34 publications

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“…Some of the examples are listed in Figure 11 and require cryo-EM to explore their structure and interfaces. For example, the structural nature of the oxidized oxygen anion at the high voltage ( Liu et al., 2018c ; Yang et al., 2021c ), soluble polysulfides ( Fan et al., 2021 ), solvated ions ( Yang et al., 2021b ; Zhang et al., 2021b ), etc. has never been directly visualized.…”

Section: Cryo-em In the Futurementioning

confidence: 99%

Cryo-EM for battery materials and interfaces: Workflow, achievements, and perspectives

Weng

Wang

2021

iScience

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Section: Cryo-em In the Futurementioning

confidence: 99%

Cryo-EM for battery materials and interfaces: Workflow, achievements, and perspectives

Weng

Wang

2021

iScience

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“…[33] Lithium hexafluorophosphate (LiPF 6 ) is a kind of commercial Li salt for Li-ion batteries. [34][35][36] However, it will decompose into high-resistance species on cathode especially at high voltage, and cannot participates in the formation of dense SEI on Li metal to stabilize the interface. Lithium borate difluoroxalate (LiDFOB) that contains boron element that is benefit to the Li anode stability, which also embrace high stability at high voltage.…”

Section: Introductionmentioning

confidence: 99%

Dual‐Salt Electrolyte with Synergistic Effect for Lithium Metal Batteries with Prolonging Cyclic Performance

Jiang¹,

Xu²,

Cheng³

et al. 2022

ChemElectroChem

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Along with the booming development of human society, the commercial lithium-ion battery cannot satisfy increasing energy demand for the insufficient energy density, which is attributed to the limited theoretical capacity (372 mAh g À 1 ) of graphite anode. Logically, lithium (Li) metal, which can deliver ultrahigh theoretical capacity of 3860 mAh g À 1 and lowest electrochemical potential of À 3.04 V versus standard hydrogen electrode, is regarded as the "holy grail" for next-generation energy storage systems with high energy density. Nevertheless, the practical application of Li metal batteries is hampered by low Coulombic efficiency and poor cyclic performance caused by the dendritic electrodeposition. Herein, a kind of novel carbonate-based electrolyte with a dual-salt of hexafluorophosphate (LiPF 6 ) and lithium borate difluoroxalate (LiDFOB) for stable Li anode is designed and demonstrated. The introduction of LiDFOB can not only uniform electrodeposition of Li to promote Coulombic efficiency and cycle stability, but also can suppress decomposition of LiPF 6 to passivate cathode surfaces. Taking this synergistic effect, Li metal batteries with the high-capacity ternary cathode of LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NMC811) exhibits outstanding cyclic performance with high-rate capability. Encouragingly, the posted electrolyte is expected to foster the commercial application of Li metal batteries for pursuing highenergy density.

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“…Lithium metal anode, known for its high theoretical capacity and low redox potential, has received considerable interest for the high energy-density batteries (Tarascon and Armand, 2001;Zhang et al, 2021a). Efficient and reversible lithium plating/stripping is the basis of various secondary batteries such as the lithium-sulfur (Li-S), lithium-oxygen ) and all-solid-state lithium batteries.…”

Section: Introductionmentioning

confidence: 99%

“…Various methods have been developed to realize the controlled deposition of the lithium metal, including optimizing the electrolytes (Yang et al, 2019a;Zhang S. et al, 2020;Zhang et al, 2021a;Yang et al, 2021b), applying the solid electrolytes, designing the current collectors (Yang et al, 2019c) and building artificial solid electrolyte interface (SEI) layers. The electrolyte additives such as fluorinated ethylene carbonate (FEC) (Zhang X.-Q.…”

Section: Introductionmentioning

confidence: 99%

Controlled Lithium Deposition

Zhang

Yang

et al. 2022

Front. Energy Res.

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Lithium metal is a promising anode material for its low redox potential and high theoretical specific capacity. However, the commercial application of the lithium metal anode is hindered with safety concerns arising from the uncontrolled growth of the lithium dendrites and significant volume variation during the lithium plating and stripping processes. Modification to the current collector is effective in tailoring the morphology of the deposited lithium and improving the cycling performance of the lithium metal batteries This review summarizes at first the global research advances in the structural design and the selection of the current collectors and their textures. It then presents some of our efforts in realizing controlled lithium deposition by designing current collectors in three aspects, lithium deposition induced by the micro-to-nano structures, lithiophilic alloys and iron carbides. Finally, conclusions and prospects are made for the further research of the current collectors.

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Competitive Solvation Enhanced Stability of Lithium Metal Anode in Dual-Salt Electrolyte

Cited by 101 publications

References 34 publications

Cryo-EM for battery materials and interfaces: Workflow, achievements, and perspectives

Cryo-EM for battery materials and interfaces: Workflow, achievements, and perspectives

Dual‐Salt Electrolyte with Synergistic Effect for Lithium Metal Batteries with Prolonging Cyclic Performance

Controlled Lithium Deposition

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