Dual impact of superior SEI and separator wettability to inhibit lithium dendrite growth

Han, Shichang; Ardhi, Ryanda Enggar Anugrah; Liu, Guicheng

doi:10.1007/s12598-021-01878-y

Cited by 31 publications

(21 citation statements)

References 15 publications

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“…In contrast, Li dendrite formation was not mitigated in HC since Li was non-uniformly deposited on the HC shell. This result is consistent with previous studies in which non-uniform Li dendrite formation accelerates the cycle failure. − Moreover, the morphological difference of deposited Li between the samples can be evaluated by electrochemical impedance spectroscopy (EIS). In the EIS data after the first lithium deposition (at 0.5 mA cm –2 for 1.0 mAh cm –2 ) (Figure S18), all samples have a semicircle, which refers to mixed impedance consisting of SEI ( R sei ) and charge transfer reaction ( R ct ) where SU-HCP has a slightly larger semicircle than bare Cu and HC.…”

Section: Resultssupporting

confidence: 91%

Sea-Urchin-like Hierarchical Carbon Spheres with Conical Pores as a Three-Dimensional Lithium Host for Dendrite Suppression

Cho

Chae

Hong

et al. 2022

ACS Appl. Energy Mater.

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Three-dimensional (3D) porous carbon structures have attracted considerable attention in recent years because of their large surface area and porosity, which enable superior lithium accommodation. In this study, we report a sea-urchin-like hierarchical carbon sphere with a conical pore structure for use as a 3D lithium host for dendrite suppression. Electron microscopic images and battery performance results show that the numerous valley-like arrangements in the conical pore structure leads to better accommodation of lithium compared with previously reported 3D porous carbon structures. The core part of the pores induces lithium deposition by functioning as the homogeneously distributed charge center. Nucleation occurs from the inside and affects the subsequent growth of lithium. In addition, the hierarchical 3D porous structure can effectively accommodate lithium, preventing volume expansion. Our proposed carbon scaffold design can substantially suppress dendritic lithium growth, resulting in enhanced battery performance with a long-term cycle life of over 250 cycles at a current density of 0.5 mA cm–2 and enhanced kinetics at higher current densities up to 5 mA cm–2.

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Section: Resultssupporting

confidence: 91%

Sea-Urchin-like Hierarchical Carbon Spheres with Conical Pores as a Three-Dimensional Lithium Host for Dendrite Suppression

Cho

Chae

Hong

et al. 2022

ACS Appl. Energy Mater.

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Section: Resultsmentioning

confidence: 99%

“…However, the electrolyte uptake studies portrayed in Figure S4j and Table S1, Supporting Information, exposed a good electrolyte wettability for the modified separators upon longer duration, which is crucial to inhibit the lithium dendrite growth. [38] X-ray diffraction pattern shown in Figure 2f exposed characteristic peak at 27.4° (2θ) reflecting (002) crystal plane identical to that of bulk graphite (3.34 Å). Besides, the D and G band signatures deduced from the Raman spectra validated high graphitization, which indicated the more vigorous intensity in the ordered G band at 1587 cm −1 than in the disordered D band at 1372 cm −1 under a 1.15 intensity ratio (Figure 2j).…”

Section: Artificial Restructuring Of Interfacementioning

confidence: 98%

Robust, Ultrasmooth Fluorinated Lithium Metal Interphase Feasible via Lithiophilic Graphene Quantum Dots for Dendrite‐Less Batteries

Senthil

Kim

et al. 2022

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extremely low electrode potential (−3.04 V versus standard hydrogen electrode), [1,2] it suffers terribly from an in-homogeneous Li deposition and a rough solid electrolyte interphase (SEI) being caused by continuous electrolyte reduction because its electrochemical potential lies above the lowest unoccupied molecular orbital (LUMO) of non-aqueous electrolytes. Hence, an uneven Li + flux prevails and is exceedingly dense at the tip/needle-like points to promote dendritic growth and concurrent deposition of "dead Li" reflected as low coulombic efficiency, capacity fade, and safety concerns in a battery. [3][4][5][6] Several attempts to realize the long-term stability of metal anodes through Li protection involving structured/patterned Li-metal anodes, [7] pre-formed artificial SEIs, [8,9] ex-situ surface protective layers, [10][11][12] electrolyte modification (redox mediators, high Li-salt concentration), [13][14][15] self-healing surfaces, [16,17] and cycling protocols [18,19] have been reported to suppress dendrite growth. Unfortunately, the developed artificial SEIs end up with features such as acute thickness, extraneous species, poor and incompatible electrode-electrolyte interface, and low interphase wettability, compromising the concentration of liquid electrolyte and Li content.Recently, it has been reported that the use of lithiophilic carbon-based materials would be an effective strategy to control and regulate nucleation sites with a lower polarization. [20][21][22] Several lithiophilic carbons such as carbon fibers, [23] porous carbon, [24,25] graphene matrix, [26,27] reduced graphene oxide (rGO), [28,29] and carbon nanotubes [30,31] have been widely engineered to establish a regulated Li redeposition with multiple battery components as protected Li metal, Li hosts, coated on the separator, and electrolyte additive. However, their cycle life remains uncertain due to the problems of top deposition that could again trigger dendrite or "dead Li" leading to surface roughness. [7][8][9][10][11][12][13][14] Worse, the reported carbons are mostly non-site and non-size specific, which collapses in a longterm cycling and additionally adds up to an inactive cell mass (0.4-3 mg cm −2 ) making the design and collective interpretation empirical. [23][24][25][26][27][28][29][30] Recently, the size-specific characteristics of graphene sheets unveiled as N,S-co-doped graphene, graphene Dendrite growth and in-homogeneous solid electrolyte interphase (SEI) buildup of Li metal anodes hinder the longtime discharge-charge cycling and safety in secondary metal batteries. Here, the authors report an in-situ restructured artificial lithium/electrolyte SEI exposing an ultrasmooth and thin layer mediated through graphene quantum dots (GQDs). The reformed artificial interphase comprises a mixture of organic/inorganic-rich compositions alike as mosaic interphase, albeit the synergistic effect mediated via hydroxylated GQDs involving redeposition-borne lithium, and its accumulated salts, facilitate a homogeneous and ultrasmooth n...

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“…However, solvent-co-intercalation is certainly possible for Na ions using ether-based solvents, which results in the formation of a ternary graphite intercalation compound. [39][40][41][42][43] Hence, hard carbon (HC) was reported as an efficient insertion host for Na ions and has been widely accepted as the carbonaceous anode for fabricating high-energy-density SIBs. Although LIBs have been applied in diverse fields, the first-generation main components of a battery are a cathode, an anode, an electrolyte, and a separator.…”

Section: Introductionmentioning

confidence: 99%

Electrode/electrolyte additives for practical sodium-ion batteries: a mini review

Zhang

Zhao

et al. 2023

Inorg. Chem. Front.

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Dual impact of superior SEI and separator wettability to inhibit lithium dendrite growth

Cited by 31 publications

References 15 publications

Sea-Urchin-like Hierarchical Carbon Spheres with Conical Pores as a Three-Dimensional Lithium Host for Dendrite Suppression

Sea-Urchin-like Hierarchical Carbon Spheres with Conical Pores as a Three-Dimensional Lithium Host for Dendrite Suppression

Robust, Ultrasmooth Fluorinated Lithium Metal Interphase Feasible via Lithiophilic Graphene Quantum Dots for Dendrite‐Less Batteries

Electrode/electrolyte additives for practical sodium-ion batteries: a mini review

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