Tailoring Lithium Deposition via an SEI‐Functionalized Membrane Derived from LiF Decorated Layered Carbon Structure

Wang, Muqin; Peng, Zhé; Luo, Wenwei; Ren, Feihong; Li, Zhendong; Zhang, Qiang; He, Haibing; Ouyang, Chuying; Wang, Deyu

doi:10.1002/aenm.201802912

Cited by 116 publications

(82 citation statements)

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“…Furthermore, as shown in Figure S15, the nucleation overpotentials of AP, AP‐LiF and AP‐CTF‐LiF were 116, 96 and 57 mV, respectively. The lower overpotential of AP‐LiF compared to that of AP could be ascribed to facile Li diffusion around the LiF boundary . More importantly, the lowest overpotential of AP‐CTF‐LiF reflects the significantly lowered Li plating barrier based on the synergistic effect between CTF and in situ generated LiF.…”

Section: Figurementioning

confidence: 98%

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

et al. 2019

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A new strategy for the synthesis of a covalent triazine framework (CTF‐1) was introduced based on the cyclotrimerization reaction of 1,4‐dicyanobenzene using lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) under ionothermal conditions. LiTFSI not only served as a catalyst, but also facilitated the in situ generation and homogeneous distribution of LiF particles across the framework. The hierarchical structure resulting upon integration of CTF‐LiF onto an airlaid‐paper (AP) offered unique features for lithium metal anodes, such as lithiophilicity from CTF, interface stabilization from LiF, and sufficient lithium storage space from AP. Based on this synergistic effect, the AP‐CTF‐LiF anode exhibited stable cycling performance even at a current density of 10 mA cm−2.

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Section: Figurementioning

confidence: 98%

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

et al. 2019

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“…To overcome the lithium dendrites and volume change issues, some strategies including artificial solid electrolyte interface (SEI) (Li 3 PO 4 , Li 3 N, and LiF‐containing SEI layers), advanced electrolytes (solid electrolytes, hybrid electrolytes) and 3D hosts (nickel foams, graphene oxide foams, etc.) have been exploited.…”

Section: Introductionmentioning

confidence: 99%

Perpendicular MXene Arrays with Periodic Interspaces toward Dendrite‐Free Lithium Metal Anodes with High‐Rate Capabilities

Cao

Zhu

Wang

et al. 2019

Adv Funct Materials

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Although lithium metal is an ultimate anode material for lithium-based batteries owing to its high theoretical capacity, the uncontrollable dendrites and infinite volume change associated with poor rate capabilities are stagnating its practical applications. Here, a new type of perpendicular MXene-Li array is developed with tunable MXene walls and constant space in between as anodes for lithium metal batteries. Such perpendicular MXene arrays possess dual periodic interspaces, i.e., nanometer-scale interspaces in MXene walls and micrometer-scale interspaces between MXene walls. The former interspaces are favorable for the fast transfer of lithium ions upon stripping and plating, and the latter enables efficiently homogenization of the electric field, leading to a good high-rate capability up to 20 mA cm −2 . More importantly, the notorious lightning rod effect and volume change are efficiently inhibited in such perpendicular MXene arrays, giving rise to a dendrite-free lithium anode with a low potential of 25 mV, a high capacity of 2056 mAh g −1 , and good cycle stability up to 1700 h. layers [10,11] ), advanced electrolytes (solid electrolytes, [12] hybrid electrolytes [13,14] ) and 3D hosts (nickel foams, [15,16] graphene oxide foams, [17][18][19][20] etc.) have been exploited. In particular, 3D hosts enable to significantly promote the transfer of lithium ions or electrons, dramatically improving the cycle life and inhibiting the volume change during repeated stripping and plating processes. To date, 3D hosts can be simply divided into two categories: insulated hosts and electrically conductive hosts. The insulated 3D hosts commonly include glass fiber (GF) cloths, [21] ZnO coated polyimide matrix, [22] and oxidized polyacrylonitrile nanofiber networks, [23] which can homogenize the lithium flux and enhance the transportation of lithium ions. In comparison, electrically conductive 3D hosts are common carbon nanotube sponges, [24] Cu frameworks, [25] reduced graphene oxide foams, [26] 3D graphitic carbon foams, [27] which enable to homogenize both electrical field and lithium ion flux. However, for above 3D hosts, their pores were usually disordered, far from the ideal ordered structures. Very recently, some hosts with periodic and uniform pores or channels have been explored, including vertically aligned 3D hosts including porous polyimide/lithium arrays, [28] glass fiber/ lithium arrays, [29] Cu microchannels, [30] and vertically oriented lithium-copper-lithium arrays. [31] These periodic upright structures are not only favorable for the fast transfer of both lithium ion and electron, but providing abundant interior spaces for lithium plating. Thus, these vertically aligned hosts show improved high-rate capabilities as applied for lithium-based batteries. Unfortunately, in such 3D hosts, the lightning rod effect becomes more severe, causing substantial lithium dendrites growing at the top end of the aligned walls. [30,31] Moreover, upon deep stripping and plating, lithium is still prone to mainly grow on the ...

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“…Here cumulative capacity is the summation of the capacity plated on each individual cycle prior to cell shorting or excessive impedance rise . Rather than a mere comparison of cycle number, cumulative capacity is an overall indicator involving both deposition capacity and lifespan, which could better reflect the effectiveness of different tactics . The introduction of GCN Li + ‐modulating layer as well enables stable deposition at high current densities such as 2, 3, and 5 mA cm −2 .…”

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confidence: 99%

An Autotransferable g‐C₃N₄ Li⁺‐Modulating Layer toward Stable Lithium Anodes

et al. 2019

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Commercial deployment of lithium anodes has been severely impeded by the poor battery safety, unsatisfying cycling lifespan, and efficiency. Recently, building artificial interfacial layers over a lithium anode was regarded as an effective strategy to stabilize the electrode. However, the fabrications reported so far have mostly been conducted directly upon lithium foil, often requiring stringent reaction conditions with indispensable inert environment protection and highly specialized reagents due to the high reactivity of metallic lithium. Besides, the uneven lithium‐ion flux across the lithium surface should be more powerfully tailored via mighty interfacial layer materials. Herein, g‐C3N4 is employed as a Li+‐modulating material and a brand‐new autotransferable strategy to fabricate this interfacial layer for Li anodes without any inert atmosphere protection and limitation of chemical regents is developed. The g‐C3N4 film is filtrated on the separator in air using a common alcohol solution and then perfectly autotransferred to the lithium surface by electrolyte wetting during normal cell assembly. The abundant nitrogen species within g‐C3N4 nanosheets can form transient LiN bonds to powerfully stabilize the lithium‐ion flux and thus enable a CE over 99% for 900 cycles and smooth deposition at high current densities and capacities, surpassing most previous works.

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Tailoring Lithium Deposition via an SEI‐Functionalized Membrane Derived from LiF Decorated Layered Carbon Structure

Cited by 116 publications

References 50 publications

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

Perpendicular MXene Arrays with Periodic Interspaces toward Dendrite‐Free Lithium Metal Anodes with High‐Rate Capabilities

An Autotransferable g‐C₃N₄ Li⁺‐Modulating Layer toward Stable Lithium Anodes

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Tailoring Lithium Deposition via an SEI‐Functionalized Membrane Derived from LiF Decorated Layered Carbon Structure

Cited by 116 publications

References 50 publications

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

Perpendicular MXene Arrays with Periodic Interspaces toward Dendrite‐Free Lithium Metal Anodes with High‐Rate Capabilities

An Autotransferable g‐C3N4 Li+‐Modulating Layer toward Stable Lithium Anodes

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An Autotransferable g‐C₃N₄ Li⁺‐Modulating Layer toward Stable Lithium Anodes