Challenges and progresses of lithium-metal batteries

Wang, Jinming; Ge, Bingcheng; Li, Hui; Yang, Meng; Wang, Jing; Liu, Di; Fernandez, Carlos; Chen, Xiaobo; Peng, Qiuming

doi:10.1016/j.cej.2021.129739

Cited by 83 publications

(44 citation statements)

References 142 publications

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“…Notwithstanding these merits, there are numerous challenges ahead for the commercialization of lithium metal batteries (LMBs) . This stems from the fact that Li is relatively active and can automatically trigger reactions with the liquid electrolyte to form a porous and inhomogeneous solid electrolyte interphase (SEI), which has low modulus and inferior ionic conductivity. , More unfortunately, during cycling of the battery, the SEI is susceptible to uncontrolled Li dendrites that lead to fracture and subsequent regeneration of new SEI on the newly exposed Li.…”

Section: Introductionmentioning

confidence: 99%

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Liu

et al. 2022

ACS Appl. Energy Mater.

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The uncontrollable growth of lithium (Li) dendrites impedes the development of practical applications for the long-awaited lithium metal batteries. In this work, a strategy is proposed to protect the Li anode with a composite separator of in situ formed SnO2 and hydroxypropyl methyl cellulose (HPMC) on the polyethylene (PE) substrate. Based on the use of SnO2/HPMC@PE separator, the Li||Li cell has an ultralong cycle life of more than 2000 h and ultralow-voltage hysteresis of 11.1 mV, whereas the cell with PE separator only has the cycle life of 800 h and the voltage hysteresis of up to 222.9 mV. Moreover, Li||LiNi0.6Co0.2Mn0.2O2 (NCM622) has an initial discharge capacity of 142.3 mAh g–1 and a capacity retention of 77.9% after 250 cycles at 1 C, which are higher than those of PE (140.6 mAh g–1 with retention of 59.5%). All of the enhanced performance can be ascribed to a regulable SEI film that can be formed on the Li foil in direct contact with the SnO2 layer, which decreases the Li nucleation overpotential and facilitates ultimately uniform Li deposition. This work demonstrates the feasibility of using a modified separator to achieve stable Li metal batteries.

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Section: Introductionmentioning

confidence: 99%

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Liu

et al. 2022

ACS Appl. Energy Mater.

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“…Dual-gradient host combines the advantages of conductivity gradient and lithiophilicity gradient, which synergistically addresses the issue of uncontrolled Li growth [ 108 ]. Typically, Pu et al [ 88 ] obtained a deposition-regulating scaffold (DRS) by coating Al 2 O 3 and Au at the top and bottom regions of bare nickel scaffold, respectively ( Figure 7(a) ).…”

Section: Dual Gradientmentioning

confidence: 99%

Advances in the Emerging Gradient Designs of Li Metal Hosts

Guan

Liu

et al. 2022

Research

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Developing host has been recognized a potential countermeasure to circumvent the intrinsic drawbacks of Li metal anode (LMA), such as uncontrolled dendrite growth, unstable solid electrolyte interface, and infinite volume fluctuations. To realize proper Li accommodation, particularly bottom-up deposition of Li metal, gradient designs of host materials including lithiophilicity and/or conductivity have attracted a great deal of attention in recent years. However, a critical and specialized review on this quickly evolving topic is still absent. In this review, we attempt to comprehensively summarize and update the related advances in guiding Li nucleation and deposition. First, the fundamentals regarding Li deposition are discussed, with particular attention to the gradient design principles of host materials. Correspondingly, the progress of creating different gradients in terms of lithiophilicity, conductivity, and their hybrid is systematically reviewed. Finally, future challenges and perspective on the gradient design of advanced hosts towards practical LMAs are provided, which would provide a useful guidance for future studies.

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“…Solid-state electrolytes have several advantages compared with the liquid electrolytes traditionally used in commercial rechargeable batteries, such as wide electrochemical windows, no risk of flammability or leaking and good thermal stability [5][6][7]. In addition, many reports show that solid electrolytes could prevent lithium or other metal dendrite growth, thereby realizing the 'holy grail' of high-energy-density metal batteries [8]. Despite the apparent advantages of solid electrolytes, the limited room-temperature ionic conductivity leads to lower capacity utilization and poor rate performance [9].…”

Section: Introductionmentioning

confidence: 99%

Quasi-Solid-State Ion-Conducting Arrays Composite Electrolytes with Fast Ion Transport Vertical-Aligned Interfaces for All-Weather Practical Lithium-Metal Batteries

Wang

et al. 2022

Nano-Micro Lett.

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The rapid improvement in the gel polymer electrolytes (GPEs) with high ionic conductivity brought it closer to practical applications in solid-state Li-metal batteries. The combination of solvent and polymer enables quasi-liquid fast ion transport in the GPEs. However, different ion transport capacity between solvent and polymer will cause local nonuniform Li+ distribution, leading to severe dendrite growth. In addition, the poor thermal stability of the solvent also limits the operating-temperature window of the electrolytes. Optimizing the ion transport environment and enhancing the thermal stability are two major challenges that hinder the application of GPEs. Here, a strategy by introducing ion-conducting arrays (ICA) is created by vertical-aligned montmorillonite into GPE. Rapid ion transport on the ICA was demonstrated by 6Li solid-state nuclear magnetic resonance and synchrotron X-ray diffraction, combined with computer simulations to visualize the transport process. Compared with conventional randomly dispersed fillers, ICA provides continuous interfaces to regulate the ion transport environment and enhances the tolerance of GPEs to extreme temperatures. Therefore, GPE/ICA exhibits high room-temperature ionic conductivity (1.08 mS cm−1) and long-term stable Li deposition/stripping cycles (> 1000 h). As a final proof, Li||GPE/ICA||LiFePO4 cells exhibit excellent cycle performance at wide temperature range (from 0 to 60 °C), which shows a promising path toward all-weather practical solid-state batteries.

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Challenges and progresses of lithium-metal batteries

Cited by 83 publications

References 142 publications

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Advances in the Emerging Gradient Designs of Li Metal Hosts

Quasi-Solid-State Ion-Conducting Arrays Composite Electrolytes with Fast Ion Transport Vertical-Aligned Interfaces for All-Weather Practical Lithium-Metal Batteries

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Challenges and progresses of lithium-metal batteries

Cited by 83 publications

References 142 publications

Uniform Lithium Deposition Achieved by SnO2/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Uniform Lithium Deposition Achieved by SnO2/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Advances in the Emerging Gradient Designs of Li Metal Hosts

Quasi-Solid-State Ion-Conducting Arrays Composite Electrolytes with Fast Ion Transport Vertical-Aligned Interfaces for All-Weather Practical Lithium-Metal Batteries

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Product

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Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries

Uniform Lithium Deposition Achieved by SnO₂/Hydroxypropyl Methyl Cellulose Composite Separator toward Ultrastable Lithium Metal Batteries