Cycling Lithium Metal on Graphite to Form Hybrid Lithium-Ion/Lithium Metal Cells

Martin, Cameron; Genovese, Matthew; Louli, A. J.; Weber, Rochelle; Dahn, J. R.

doi:10.1016/j.joule.2020.04.003

Cited by 108 publications

(83 citation statements)

References 39 publications

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“…[26][27][28][29] High electrochemical performance of LMBs requires high-Coulombic-efficiency (CE), dendrite-free, and low-volume-expansion Li-metal anodes. To meet these critical requirements, tremendous approaches have been pursued in the past several years, mainly including, but not limited to, adjusting the architecture of current collectors, [30][31][32][33][34][35][36][37][38] optimizing the composition of electrolytes, [39][40][41][42][43][44][45][46] establishing an artificial solid electrolyte interface (SEI), [47][48][49][50] modifying the spectators, [51,52] and using solid-state or polymeric electrolytes. [53][54][55] The introduction of different strategies effectively mitigated the Li dendrite growth and significantly improved the CE, making the electrochemical performance of current LMBs obtain enormous progress.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Porous Materials in Lithium‐Metal Batteries

et al. 2021

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Lithium‐metal batteries (LMBs) are regarded as one of the best choices for next‐generation energy storage devices. However, the low Coulombic efficiency, lithium dendrite growth, and volume expansion of lithium‐metal anodes are dragging LMBs out of successful commercialization. Herein, the application of various porous materials in LMBs is focused on. First, several representative works are summarized to highlight the recent key progress of porous materials in LMBs, categorized into current collectors, thin 3D “hosts,” protection layers, and separators. Then, the existing challenges are discussed and future research needs to present more thorough characterizations of porous materials are advocated for, such as their porosity, electric conductivity, specific surface area, and mass density, to elaborate on their positive influence on electrochemical performance. Finally, future strategies with porous materials to build long‐cycle‐life, high‐energy‐density lithium‐metal full cells toward realistic performance targets are envisioned.

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Section: Introductionmentioning

confidence: 99%

Recent Progress of Porous Materials in Lithium‐Metal Batteries

et al. 2021

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“…[32][33][34] A recent paper reported an anode combining Li plating/stripping and graphite intercalation/ deintercalation using a combination of dual salt and mechanical pressure to stabilise the electrode operation. 35 Here we propose instead to coat graphite with a lithiophilic layer in conjunction with an organo-gel electrolyte to promote reversible Li plating (Fig. 1b).…”

Section: Introductionmentioning

confidence: 99%

High energy density anodes using hybrid Li intercalation and plating mechanisms on natural graphite

Son

Lee

Wen

et al. 2020

Energy Environ. Sci.

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“…The electrolyte is 1 m lithium difluoro(oxalato)borate (LiDFOB)-0.4 m lithium tetrafluoroborate (LiBF 4 ) in fluoroethylene carbonate (FEC)-diethyl carbonate (DEC) (1:2, v/v), a recently developed carbonate electrolyte for high-performance lithium batteries. [41] The areal capacities in electrochemical tests are ≈1.0 mAh cm −2 , as the purpose of these tests is to demonstrate cycling stability.…”

Section: Electrochemical Performancementioning

confidence: 99%

Bioinspired, Tree‐Root‐Like Interfacial Designs for Structural Batteries with Enhanced Mechanical Properties

Jin

Xiong

et al. 2021

Advanced Energy Materials

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a multifunctional component in vehicles, which serves as both a power source and a structural component. [10][11][12][13] Hence, the total vehicle weight is expected to be reduced due to the mass reduction of structural components, such as car frames and airplane wings.This "structural battery" concept has drawn increasing attention in recent years, and it has been discussed by leading electric vehicle companies lately. [14,15] The key requirement of structural batteries is enhanced mechanical properties, such as strength, modulus, and robustness under different kinds of mechanical deformation (e.g., shearing, flexing, compression, and tension). Strategies to enhance mechanical properties have been explored at both system and material levels. At the system level, cells were integrated with external supporting materials with high strength, such as metals and carbon fiber (CF)-based fabric, to form better mechanical configurations like sandwich structures and strengthen the battery systems. [16][17][18] However, this strategy inevitably results in lower energy densities because of the extra components for reinforcements, and reported reductions are in the range of 40-95%. [16][17][18] At the material level, the underlying principle is to develop new multifunctional materials, which not only function as necessary components in a battery, but also provide enhanced mechanical properties. These materials range over all components in a battery, such as active electrode materials, electrolytes, binders, and substrates. [19][20][21][22] For example, various groups demonstrated that carbon fibers, which have been widely used for load carrying, can serve as the anode itself or the cathode current collector for structural batteries. [23][24][25][26] However, the cycling performance of carbon fibers is not satisfactory, and lithiation dramatically weakens the mechanical properties of carbon fibers. [27,28] Moreover, it is difficult to integrate carbon fibers and cathode materials densely, so the cell energy density is severely compromised. Besides electrode materials, mechanically strong aramid fibers have been explored as the separator, which remarkably enhances both safety and tensile strength of structural batteries, but the cell's capacity and cycling stability are sacrificed considerably. [29] Among different mechanical properties to enhance, flexural properties are especially important, since bending is one of the most common mechanical deformations in cars and aircraft.Structural batteries are attractive for weight reduction in vehicles, such as cars and airplanes, which requires batteries to have both excellent mechanical properties and electrochemical performance. This work develops a scalable and feasible tree-root-like lamination at the electrode/separator interface, which effectively transfers load between different layers of battery components and thus dramatically enhances the flexural modulus of pouch cells from 0.28 to 3.1 GPa. The underlying mechanism is also analyzed by finite element simulations. Meanwhile,...

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Cycling Lithium Metal on Graphite to Form Hybrid Lithium-Ion/Lithium Metal Cells

Cited by 108 publications

References 39 publications

Recent Progress of Porous Materials in Lithium‐Metal Batteries

Recent Progress of Porous Materials in Lithium‐Metal Batteries

High energy density anodes using hybrid Li intercalation and plating mechanisms on natural graphite

Bioinspired, Tree‐Root‐Like Interfacial Designs for Structural Batteries with Enhanced Mechanical Properties

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