Binder-free ultra-thin graphene oxide as an artificial solid electrolyte interphase for anode-free rechargeable lithium metal batteries

Wondimkun, Zewdu Tadesse; Beyene, Tamene Tadesse; Weret, Misganaw Adigo; Sahalie, Niguse Aweke; Huang, Chen‐Jui; Thirumalraj, Balamurugan; Jote, Bikila Alemu; Wang, Daoyi; Su, Wei‐Nien; Wang, Chia‐Hsin; Brunklaus, Gunther; Winter, Martin; Hwang, Bing‐Joe

doi:10.1016/j.jpowsour.2019.227589

Cited by 110 publications

(73 citation statements)

References 54 publications

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“…Hwang and co‐workers have reported a series of different current‐collector coatings films and artificial SEIs including polyethylene oxide (PEO), [ 53 ] multilayer graphene (MLG), [ 54 ] garnet (Li 7 La 2.75 Ca 0.25 Zr 1.75 Nb 0.25 O 12 ), [ 55 ] and graphene oxide. [ 56 ] The use of PEO and multilayer graphene led to moderate improvements in capacity retention over the control case with LFP cathodes and an unoptimized ether‐based electrolyte. In particular, anode‐free Cu@PEO || LFP full cells demonstrated 64% capacity retention at 50 cycles (LIRR = 99.1%), albeit with a low initial lithium stripping capacity of 0.71 mAh cm −2 and a current rate of 0.14 mA cm −2 .…”

Section: Strategies For Improving Performance Of Anode‐free Full Cellsmentioning

confidence: 99%

“…[ 22 ] For instance, the authors demonstrated that even with the use of GO protective layers, the addition of 5% FEC had a dominant impact on the cyclability of anode‐free Cu || NMC full cells with a standard carbonate electrolytes. [ 56 ] While the premise of artificial SEIs and robust protective or stabilizing layers for lithium deposition has been the focus of much research attention over the last decade, [ 20,21,57 ] their sole application in anode‐free full cells is yet to yield reversible lithium deposition over hundreds of cycles.…”

Section: Strategies For Improving Performance Of Anode‐free Full Cellsmentioning

confidence: 99%

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Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Nanda

Gupta

Manthiram

2020

Advanced Energy Materials

334

294

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The development of high‐energy density batteries is critical to the decarbonization of the transportation and power generation sectors. For any given lithium‐containing cathode system, the anode‐free full cell configuration, which eliminates excess lithium and pairs the fully lithiated cathode with a bare current collector, can deliver the maximum possible energy density. The absence of free lithium metal during cell assembly confers significant practical advantages as well. It is also the ideal framework for developing a thorough understanding of lithium deposition in conjunction with various cathode systems. However, the poor efficiencies of lithium plating and stripping lead to rapid lithium inventory loss and poor cycle life. In the last few years, multiple studies have demonstrated the application of advanced electrolytes, modified current collectors, and optimized formation and cycling parameters to stabilize lithium deposition and improve cycle life (80% capacity retention) to 100 cycles and beyond. This review provides an overview of the various strategies toward sustaining lithium inventory in anode‐free full cells and summarizes the work undertaken in this nascent field. It is expected that further improvement upon these strategies and a combinatorial approach can enable cycle lives far in excess of what has been achieved so far.

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Section: Strategies For Improving Performance Of Anode‐free Full Cellsmentioning

confidence: 99%

Section: Strategies For Improving Performance Of Anode‐free Full Cellsmentioning

confidence: 99%

Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Nanda

Gupta

Manthiram

2020

Advanced Energy Materials

334

294

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“…12,17,20,21,[41][42][43][44] It is well-established that electrolyte formulation can be leveraged to tune Li deposition morphologies, 13,15,24,45,46 likely by altering SEI composition and arrangement. Claims that a thinner, more homogeneous SEI is correlated with smooth Li deposition and high CE are ubiquitous in the literature, 13,15,[47][48][49][50][51][52][53][54][55][56][57][58] likely due to the fact that uncontrolled SEI growth can hinder Li transport to the underlying electrode. However, recent reports indicate that the SEI formed in high performance LiTFSI/LiNO3 salt mixtures in ether-based solvents is actually thicker than the SEI on Li metal compared to LiTFSI alone.…”

Section: Toc Graphicsmentioning

confidence: 99%

Rapid Interfacial Exchange of Li Ions Dictates High Coulombic Efficiency in Li Metal Anodes

et al. 2021

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Although Li metal batteries offer the highest possible specific energy density, practical application is plagued by Li filament growth with adverse effects on both Coulombic efficiency and battery safety. The structure and resulting properties of the solid electrolyte interphase (SEI) on Li metal is critical to controlling Li deposition morphologies and achieving high efficiency batteries. In this report, we use a combination of nuclear magnetic resonance (NMR) spectroscopy and X-ray photoelectron spectroscopy (XPS) to show that fast Li transport and low solubility at the electrode/SEI interface in 0.5 M LiNO 3 + 0.5 M LiTFSI electrolyte bi-salt in 1,3-dioxolane:dimethoxyethane (DOL:DME, 1:1, v/v) are responsible for the formation of low surface area Li deposits and high Coulombic efficiency, despite the fact that the SEI is thicker and chemically more heterogeneous than LiTFSI alone. These data suggest that SEI design strategies that increase SEI stability and Li interfacial exchange rate will lead to more even current distribution, ultimately providing a new framework to generate smooth Li morphologies during plating/stripping. File list (2) download file view on ChemRxiv SEItransportv29_acceptedchanges.pdf (840.92 KiB) download file view on ChemRxiv SEItransportSI_v16.pdf (2.12 MiB)

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“…The recently reported high cycling stabilities for AF-LMBs were obtained at enhanced temperature or pressure. The cycling stabilities and densely-packed Li deposits presented here have not been achieved at ambient temperature and unpressurized Li deposition 2, [53][54][55][56][57][58][59][60][61][62] . It should be stressed that the cycle performance of d-CP in the AF-LMB is not derived from the pressure effect because stack pressure is not delivered to the inner surface of the 3D current collector.…”

Section: Electrochemical Performance Of Af-lmb With Nw Defective Surfmentioning

confidence: 99%

Driving high capacity anode-free lithium metal batteries under unpressurized and lean electrolyte condition by an electron-deficient current collector

Kwon¹,

Lee²,

Roh³

et al. 2021

Preprint

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The long-term cycling of anode-free lithium metal batteries (AF-LMBs) with a liquid electrolyte is hindered by the formation of inhomogeneous solid electrolyte interphase (SEI) on current collector and the subsequent irregular Li deposition. Here, we report the nano-window (NW) defect-enriched carbon current collector with a lowered Fermi level, which can address the critical issues. The low Fermi-level surface induces a defect-free SEI layer by alleviating electron tunneling at the interface, and leads to high Li nucleation density and lateral Li growth via Li-C orbital hybridization. DFT calculations and spectroscopic analyses elucidate that these effects are rooted in the electron deficiency of the NW defect structure. An AF-LMB employing an NCM811 cathode, NW-enriched 3D-current collector, and carbonate liquid electrolyte exhibits 90% capacity retention for over 50 cycles under unpressurized and lean electrolyte conditions. The defect chemistry presents a new design principle of tuning the electronic structure of current collectors enabling 3-dimensional Li deposition in AF-LMBs.

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Binder-free ultra-thin graphene oxide as an artificial solid electrolyte interphase for anode-free rechargeable lithium metal batteries

Cited by 110 publications

References 54 publications

Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Anode‐Free Full Cells: A Pathway to High‐Energy Density Lithium‐Metal Batteries

Rapid Interfacial Exchange of Li Ions Dictates High Coulombic Efficiency in Li Metal Anodes

Driving high capacity anode-free lithium metal batteries under unpressurized and lean electrolyte condition by an electron-deficient current collector

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