A 3D conducting scaffold with in-situ grown lithiophilic Ni2P nanoarrays for high stability lithium metal anodes

Jiang, Huai; Fan, Hailin; Han, Zheng; Hong, Bo; Wu, Feixiang; Zhang, Kai; Zhang, Zhian; Fang, Jing; Lai, Yanqing

doi:10.1016/j.jechem.2020.06.004

Cited by 36 publications

(19 citation statements)

References 57 publications

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“…To deeply verify the formation of Li 3 P phase, high-resolution XPS spectra of Li 1s is introduced in Figure 4d. Obviously, the peaks located at 56.9 eV are assigned to the generation of Li-P bonds, [25,45] and Li 3 P phase turns to be the dominant components for fast Li + distribution (Figure 4d). [46] Correspondingly, the cyclic voltammetry (CV) curves of CoP-C@CFC within the potential ranging from 3.0 to 0.01 V in initial five cycles are presented in Figure 4e.…”

Section: Resultsmentioning

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: Resultsmentioning

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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“…33 The binding energy of 133.9 eV can be attributed to the P oxidized by air. 34 Interestingly, the intensity ratio of the P−O and P 2p peaks of Fe-P/NF is smaller than that of Co-P/NF. This result illustrates that P in Fe-P/NF is less susceptible to oxidation and exhibits better stability.…”

Section: Resultsmentioning

confidence: 92%

“…In Figure d, the electron binding energy values of 129.3 and 130.2 eV belong to P 2p 3/2 and P 2p 1/2 of P in CoFe-P/NF-1, respectively . The binding energy of 133.9 eV can be attributed to the P oxidized by air . Interestingly, the intensity ratio of the P–O and P 2p peaks of Fe-P/NF is smaller than that of Co-P/NF.…”

Section: Results and Discussionmentioning

confidence: 93%

Self-Supported CoFe-P Nanosheets as a Bifunctional Catalyst for Overall Water Splitting

Wang

Lai

et al. 2021

ACS Appl. Nano Mater.

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Highly efficient and stable dual-function electrocatalysts for overall water splitting are of great significance to promote the application of hydrogen energy. Constructing a bimetallic phosphide nanocomposite structure can enhance active sites and accelerate electron transfer, which is beneficial to electrocatalysis. Herein, we obtained self-supporting cobalt-iron phosphide nanosheets supported on foamed nickel through twostep hydrothermal and phosphating treatment. When the CoFe-P/ NF-1 electrode material reaches 100 mA cm −2 , only a HER overpotential of 180 mV is required. Moreover, the overpotential for OER is 275 mV at 200 mA cm −2 . The overall water splitting electrolyzer assembled by CoFe-P/NF-1 can reach a current of 10 mA cm −2 at 1.57 V. The catalytic performance is better than the currently reported transition metal-based catalysts, and it exhibits excellent stability. This work provides a design idea of transition metal phosphide used in overall water splitting catalysis.

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“…As a commercial current collector, Ni foam (NF) has attracted considerable attention as an ideal 3D host for the lithium metal anode because of its several advantages of low cost, easy access, and porous structure. However, because of the intrinsic properties of poor lithiophilicity, pristine NF is not suitable for direct use as a host of Li deposition, which shows the nonuniform distribution of Li + flux, large nucleation overpotential, severe dendrite growth, and irreversible capacity loss. − Fortunately, improving the lithiophilicity of NF with excellent lithium affinity materials has been proved to reduce the large nucleation barrier, which is beneficial to maintain stable distribution of the electric field and Li + flux, thus achieving uniform Li deposition and long-term cycling performance. ,,, For instance, Jiang et al proposed a lithiophilic Ni 2 P nanoarray decorated NF for a highly stable lithium metal anode, which regulates Li deposition and exhibits excellent electrochemical stability . Cao et al constructed lithiophilic NiF x nanosheets on NF via a succinct fluorination strategy, in which the decorated NiF x nanosheets effectively reduce the lithium nucleation barrier, thus inducing the homogeneous lithium nucleation and enhancing the electrochemical performance .…”

Section: Introductionmentioning

confidence: 99%

In Situ Grown MnO₂ Nanoflower Arrays on Ni Foam (MnO₂@NF) as 3D Lithiophilic Hosts for a Stable Lithium Metal Anode

Fan

et al. 2022

ACS Appl. Energy Mater.

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As the "holy grail" of lithium battery anode materials, the lithium metal anode suffers from several fatal defects, such as infinite volume expansion and uncontrolled dendrite formation. Herein, a three-dimensional (3D) lithiophilic host that comprises MnO 2 nanoflowers in situ grown on Ni foam (MnO 2 @NF) is developed into a stable lithium metal anode. The 3D porous structure of Ni foam (NF) can greatly reduce the average current density of the electrode and relieve volume changes during the repeated plating/stripping process, in which the MnO 2 nanoflower arrays endow the 3D framework with high lithiophilicity, leading to a reduced lithium nucleation barrier and uniform lithium nucleation. It is found that the MnO 2 nanoarrays could transform into Ni/Li 2 O, which offers abundant lithium deposition sites, homogenizes Li + flux distribution, and ensures fast Li + transfer kinetics. These advantages of MnO 2 @NF enable dendrite-free lithium deposition behavior and excellent electrochemical performance. As a consequence, the asdesigned MnO 2 @NF host delivers a high Coulombic efficiency (CE) of 98.7% for 400 cycles in a half cell under 0.5 mA cm −2 , and an ultralong cycling lifespan of 2000 h with a low-voltage hysteresis of 18 mV is achieved in a symmetrical cell at 1 mA cm −2 . Furthermore, the Li-MnO 2 @NF//LiFePO 4 full cell also exhibits enhanced cyclic stability and rate performance, indicating the application prospects of Li-MnO 2 @NF as a stable lithium metal anode.

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A 3D conducting scaffold with in-situ grown lithiophilic Ni2P nanoarrays for high stability lithium metal anodes

Cited by 36 publications

References 57 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

Self-Supported CoFe-P Nanosheets as a Bifunctional Catalyst for Overall Water Splitting

In Situ Grown MnO₂ Nanoflower Arrays on Ni Foam (MnO₂@NF) as 3D Lithiophilic Hosts for a Stable Lithium Metal Anode

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A 3D conducting scaffold with in-situ grown lithiophilic Ni2P nanoarrays for high stability lithium metal anodes

Cited by 36 publications

References 57 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

Self-Supported CoFe-P Nanosheets as a Bifunctional Catalyst for Overall Water Splitting

In Situ Grown MnO2 Nanoflower Arrays on Ni Foam (MnO2@NF) as 3D Lithiophilic Hosts for a Stable Lithium Metal Anode

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In Situ Grown MnO₂ Nanoflower Arrays on Ni Foam (MnO₂@NF) as 3D Lithiophilic Hosts for a Stable Lithium Metal Anode