Vesicle-shaped ZIF-8 shell shielded in 3D carbon cloth for uniform nucleation and growth towards long-life lithium metal anode

Fang, Yuting; Cai, Wenlong; Zhu, Song; Xu, Kangli; Zhu, Maogen; Xiao, Guannan; Zhu, Yuwei

doi:10.1016/j.jechem.2020.05.067

Cited by 23 publications

(15 citation statements)

References 36 publications

(37 reference statements)

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“…Recently, MOF derivates with weak conductivity acting as inert sheath in situ enfold the CFC core to low local current density and change uneven charge distribution of electrode interface. [35,36] Furthermore, abundant lithiophilic sites as nucleation seeds guide Li uniform deposition. [37,38] However, owing to the single electron-conductive carbon skeleton and the as-formed insulated Li 2 O product, the polarization of battery increase significantly, which usually is harmful for uniform Li plating/stripping.…”

Section: Introductionmentioning

confidence: 99%

Ion/Electron Redistributed 3D Flexible Host for Achieving Highly Reversible Li Metal Batteries

Jiang

Zhou

Guan

et al. 2022

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paring to current Li-ion batteries consisting of graphite anode (350-400 Wh kg −1 ), Li metal batteries matched with Li metal anodes exhibit an irresistible attraction due to high energy densities (3500 Wh kg −1 in Li-air battery, and 2600 Wh kg −1 in Li-S battery). [3,4] However, poor cycling reversibility and potential safety hazards from Li dendrite growth limit its practical application, which are ascribed primarily to nonuniform Li deposition and huge volume effect. [5] To overstride these obstructions, considerable efforts have been devoted, including tailoring new electrolytes and additives to in situ form robust solid electrolyte interphase (SEI) layers, [6,7] constructing solid state electrolytes to hinder Li dendrites, [8,9] regulating appropriate external factors (temperature, [10] pressure, [11] or current density [12] ), designing novel 3D Li metal, [13,14] and ingenious porous metal current collectors. [15,16] Although Li dendrites could be partially suppressed via these strategies, highly reversible Li plating/stripping is still difficult to realize effectively under realistic current density with high capacity. Fortunately, the 3D carbon frameworks with large specific area not only decrease local current density and inhibit Li dendrite growth, but also depress huge volume expansion, contributing to achieve highly reversible Li metal anodes with high energy density. [17] Thus, all kinds of novel 3D carbon matrixes, such as carbon fibers, [18,19] 3D graphene-based skeletons, [20] and hollow carbon sphere, [21] have been verified. Among them, benefitting from the excellent mechanical property, free-standing, low-cost, and easy to large-scale production, carbon fiber cloth (CFC) displays an enormous practical potential as a high-performance host of Li metal anode. [22,23] However, as-fabricated 3D carbon frameworks are mostly single electron-conductive skeletons, which induces inhomogeneous electron accumulation and then drives Li + non-uniform distribution or transfer on the surface of CFC as shown in Figure 1a. It leads to dendritic Li accumulating on the surface of electrode with most of the 3D void being not fully utilized. [24][25][26] Despite lithiophilicity modification with precious or transition metal (Au, [27] Ni, [28] Ag [29] ), transition metal oxides (ZnO, [30] RuO 2 , [31] NiO [32] ), metal sulfides (Cu 7 S 4 ), [33] and metallic nitrides (Ni x N [34] ) inducing Li selective deposition could partially settle these problems, this 3D carbon frameworks are promising hosts to achieve highly reversible lithium (Li) metal anodes, whereas insufficient effects are attributed to their single electron conductivity causing local aggregating of electron/Li + and uncontrollable Li dendrites. Herein, an ion/electron redistributed 3D flexible host is designed by lithiophilic carbon fiber cloth (CFC) modified with metalorganic framework (MOF)-derived porous carbon sheath with embedded CoP nanoparticles (CoP-C@CFC). Theory calculations demonstrate the strong binding energy and plenty of charge transfer f...

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Section: Introductionmentioning

confidence: 99%

Ion/Electron Redistributed 3D Flexible Host for Achieving Highly Reversible Li Metal Batteries

Jiang

Zhou

Guan

et al. 2022

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“…As shown in Figure 4e, bare Cu shows a larger nucleation overpotential about 59.4 mV during Li plating. On the contrary, there is a lower nucleation overpotential of 27.9 mV with the MMIs, which can be attributed to the fact that rich surface polar groups on the ZIF‐8 can adsorb Li‐ion and reduce the nucleation barrier [48] . In contrast, bare Cu electrodes are unable to regulate ions flux, leading to the unavoidably slow processes of ions transport.…”

Section: Resultsmentioning

confidence: 96%

Robust Anion‐Shielding Metal‐Organic Frameworks Based Composite Interlayers To Achieve Uniform Li Deposition for Stable Li‐Metal Anode

Amin

et al. 2022

ChemElectroChem

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Lithium (Li) metal is one of the most promising anode candidates for next‐generation rechargeable batteries with a high energy density because of its high theoretical specific capacity and low reduction potential. However, the growth of lithium dendrites causes intolerable safety risks and poor electrochemical performances. Limiting the migration of anions near the Li‐metal anode is regarded as an effective strategy to achieve uniform Li deposition and thus suppress the dendritic growth. Here, a metal‐organic frameworks based polyvinylidene fluoride‐hexafluoropropylene copolymer composite interlayer is designed and prepared through an in situ heat‐assisted method. Being guided and assisted by the anion‐shielded composite interlayer, a homogenous Li‐ion flux as well as a high Li‐ion transference number are achieved, which promotes the uniform and stable lithium deposition. At the same time, the robust composite interlayer is expected to suppress the growth of Li dendrites by its intrinsically high modulus (≈2.49 GPa). As a result, symmetrical batteries exhibit excellent cyclic stability for over 1600 h with functional composite interlayer. Furthermore, full cells with a commercial lithium iron phosphate cathode demonstrate remarkably enhanced cycling performance with a satisfying capacity retention of 96 % after 500 cycles. This work provides an effective strategy for the design and fabrication of functional composite interlayers to realize stable lithium metal anodes.

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“…Furthermore, surface modification of lithium anodes has been confirmed by researchers as an efficient method to stabilize the lithium metal anode. , Owing to a number of beneficial functions of metal–organic frameworks (MOFs), such as homogenizing Li + flux, compacting lithium deposition, and increasing Li + transport efficiency in electrolytes, an open-architecture metal–organic framework (OA-MOF) with stereoscopic lithiophilic sites was demonstrated to act as a dynamical SEI, a well-designed MOF-coated functional polypropylene, and functional glass fiber (GF) with MOFs as a separator for LMBs, respectively. , The polar groups grafted with organic ligands in the MOF generate abundant polar bonds, including O–H and M–O, improving adhesive interactions with Li + , which facilitates a well-distributed Li-ionic flow, decreases the lithium nucleation barrier, and promotes uniform deposition during Li deposition during cycling. Moreover, MOFs can regulate the transfer process of Li-ion and maximize the driving force of ion transportation, achieving smooth lithium deposition. − We also demonstrate that the MOF-based three-dimensional (3D) porous interfacial layer acts as a robust shield to physically suppress lithium dendrite growth and exploit its high-polarity structure to homogenize Li-ion concentration for Li deposition, thereby alleviating the formation of excessive SEI . However, the fabrication of a MOF layer on lithium metals to utilize its advantages is still a problem.…”

Section: Introductionmentioning

confidence: 93%

Lightweight Shield to Stabilize Li Metal Anodes at High Current Rates

Qian

Wang

et al. 2021

ACS Appl. Energy Mater.

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Lithium metal batteries (LMBs) are considered one of the most attractive high-specific energy storage devices. However, their popularization and application are plagued by the uncontrollable lithium deposition and unlimited volume expansion of lithium metal anodes during the repeated depositing/stripping. Here, we load a metal–organic framework (ZIF-67) on a three-dimensional (3D) flexible melamine sponge (MS) through a liquid phase reaction to prepare a MS with ZIF-67 nanoparticles (MSZ). The unique MSZ interlayer can offer accommodation space for “hostless” lithium; the specific pore structure and polar chemical structure of the MS/ZIF-67 work together to guide uniform lithium deposition. The Li–Cu cells with the MSZ interlayer exhibit remarkable electrochemical performance with a small voltage hysteresis less than 105 mV beyond 250 cycles (5 mA cm–2), and the high Coulombic efficiency remains over 98% after 700 cycles at 1 mA cm–2. Even at an extremely high current density of 10 mA cm–2, this enhancement is achieved. The introduction of the MSZ interlayer into Li/LiFePO4 cells enhances their cycling performance with a reversible specific capacity of 99.7 mAh g–1 over 1000 cycles at 1C. Our work provides new ideas for stable high-specific energy lithium metal batteries.

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Vesicle-shaped ZIF-8 shell shielded in 3D carbon cloth for uniform nucleation and growth towards long-life lithium metal anode

Cited by 23 publications

References 36 publications

Ion/Electron Redistributed 3D Flexible Host for Achieving Highly Reversible Li Metal Batteries

Ion/Electron Redistributed 3D Flexible Host for Achieving Highly Reversible Li Metal Batteries

Robust Anion‐Shielding Metal‐Organic Frameworks Based Composite Interlayers To Achieve Uniform Li Deposition for Stable Li‐Metal Anode

Lightweight Shield to Stabilize Li Metal Anodes at High Current Rates

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