MXene/ZnO flexible freestanding film as a dendrite-free support in lithium metal batteries

Shen, Yuxi; Pu, Ziyan; Zhang, Yaru; Chen, Yao; Zhang, Heng; Wang, Nating; Qiu, HL; Li, Yueming

doi:10.1039/d2ta04797g

Cited by 22 publications

(9 citation statements)

References 67 publications

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“…(a) Rate performance and (b) cycle performance of lithium-oxygen batteries constructed with 3DM Cu/ZnO@Li-P composite anode. References [43][44][45][46] are cited in the supplementary materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Pulsed Current Constructs 3DM Cu/ZnO Current Collector Composite Anode for Free-Dendritic Lithium Metal Batteries

et al. 2023

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Although lithium metal is an ideal anode material for achieving high-energy-density lithium-based batteries, the uneven deposition/exfoliation process of lithium during cycling easily triggers the formation of lithium dendrites and dead lithium, which leads to a low Coulombic efficiency and safety issues. In this paper, a lithiophilic 3D copper mesh current collector is designed by using lithiophilic ZnO and pulsed current plating and is applied to a lithium metal battery composite anode. Under the action of the pulsed current field, the novel lithium metal composite anode battery achieved the homogeneous deposition of lithium ions. The lithium-to-copper half cells assembled with the 3DM Cu/ZnO current collector from the pulsed current deposition presented a Coulombic efficiency as high as 97.8% after 1 min of activation at 3 mA cm−2 follow by 10 cycles at a stripping current of 0.5 mA cm−2. Moreover, the symmetric cell could be stable for 1500 h at 1 mA cm−2 with a limited capacity of 1 mAh cm−2, and the assembled full cell (LiFePO4 as the cathode) maintained a Coulombic efficiency of about 90% for the 30th cycle at 1 C. This novel mechanism is an advanced strategy to improve cyclic stability and is crucial for designing stable lithium metal batteries.

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Section: Supplementary Materialsmentioning

confidence: 99%

Pulsed Current Constructs 3DM Cu/ZnO Current Collector Composite Anode for Free-Dendritic Lithium Metal Batteries

et al. 2023

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“…Research has shown that lithium metal prefers to be deposited on materials with low nucleation barriers, such as Au, 95 Pt, 96 Sn, 97 and ZnO. 98 Therefore, the use of these materials to modify the 3D current collector to reduce the nucleation overpotential of lithium is a common method to prolong the initiation of lithium dendrites. However, the deposition of lithium metal tends to be in a "top growth" mode, i.e., the lithium metal prefers to be deposited on the side of the current collector near the diaphragm rather than inside, which not only fails to efficiently utilize the internal space of the 3D structure but also facilitates the growth of lithium dendrites.…”

Section: Gradient Structurementioning

confidence: 99%

Section: Gradient Structurementioning

confidence: 99%

Advances in research on the inhibitory effect of 3D current collector structures for lithium dendrites

Xiang,

Fu,

Yin

et al. 2023

Inorg. Chem. Front.

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“…25,26 Recently, the construction of an organic/inorganic artificial SEI has been proven to be a more effective strategy to optimize the interfacial stability of Li/electrolyte due to its synergistic advantages of soft polymer and rigid Li + conductor. 27,28 According to previous reports, flexible polymers such as PVDF, 29 PAN, 30 PDMS, 31 etc. have been used as an artificial SEI to establish an adaptive electrostatic interphase on the surface of Li-metal anode.…”

Section: Introductionmentioning

confidence: 98%

“…Recently, researchers have made great efforts to develop numerous methods to optimize the stability of Li/electrolyte interface, including in situ liquid electrolyte engineering and ex situ artificial SEI. − Among them, liquid electrolyte engineering mainly focuses on optimizing solvents, Li salts, high- or low-concentration strategies, and electrolyte additives to realize in situ SEI with ideal organic or inorganic compositions. − However, such in situ formed SEI is generally difficult to provide a controllable ideal Li/electrolyte interface to maintain its long-term cycling stability. , In contrast, as an ex situ surface engineering approach, artificial SEI can controllably obtain an ideal Li/electrolyte interface with enhanced Li + conductivity and high mechanical strength for homogeneous Li deposition without dendritic Li growth. , Recently, the construction of an organic/inorganic artificial SEI has been proven to be a more effective strategy to optimize the interfacial stability of Li/electrolyte due to its synergistic advantages of soft polymer and rigid Li + conductor. , According to previous reports, flexible polymers such as PVDF, PAN, PDMS, etc. have been used as an artificial SEI to establish an adaptive electrostatic interphase on the surface of Li-metal anode.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional and Seamlessly Integrated Soft/Rigid Interphase Realizing a Stable Lithium-Metal Anode for a High-Performance Lithium-Metal Battery under a Lean Electrolyte

Ran,

Song,

Liu

et al. 2023

ACS Sustainable Chem. Eng.

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Although the organic/inorganic hybrid artificial solid electrolyte interphase (SEI) has been proven to effectively optimize the interfacial stability of the Li-metal anode, its rational construction and coupling mechanism are still challenging. In this work, a multifunctional and seamlessly integrated artificial interphase with a synergistic soft (PVDF-HFP)/rigid (Li 3 Sb/LiF) feature is designed to stabilize Li anode for a high-performance Limetal battery under a lean electrolyte. As evidenced theoretically and experimentally, the soft PVDF-HFP polymer is used to adaptively tune the surface current density near the Li/electrolyte interface and substantially prevent the electrolyte solvent from being consumed, while the rigid Li 3 Sb/LiF particles embedded in the PVDF-HFP polymer also can guarantee efficient Li + transport and fast Li nucleation/deposition with a low energy barrier. As a result, even at 20 mA cm −2 /2 mAh cm −2 , the modified Li anode can provide excellent cycling performance in Lia∥Li symmetrical cells over 1000 cycles. Most impressively, it also enables the LiNi 0.8 Co 0.1 Mn 0.1 O 2 (4.4 mAh cm −2 )a∥Li (50 μm) full cell to realize superior cycling stability under harsh conditions (low N/P ratio ≈ 2.2 and lean electrolyte 12 μL mAh −1 ) compared to the bare Li anode, which shows a high average CE of 99.7% and high capacity retention of 79.2% after 100 cycles, demonstrating its great potential in practical Li-metal batteries. This work proposes an adaptive artificial interphase with synergistic soft/rigid features and realizes the practical lean-electrolyte Li-metal batteries.

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MXene/ZnO flexible freestanding film as a dendrite-free support in lithium metal batteries

Abstract: The growth of lithium dendrite during charge/discharge process is one major obstacle for the development of lithium metal batteries. In this work, MXene/ZnO freestanding flexible film was obtained to suppress...

Cited by 22 publications

References 67 publications

Pulsed Current Constructs 3DM Cu/ZnO Current Collector Composite Anode for Free-Dendritic Lithium Metal Batteries

Pulsed Current Constructs 3DM Cu/ZnO Current Collector Composite Anode for Free-Dendritic Lithium Metal Batteries

Advances in research on the inhibitory effect of 3D current collector structures for lithium dendrites

Multifunctional and Seamlessly Integrated Soft/Rigid Interphase Realizing a Stable Lithium-Metal Anode for a High-Performance Lithium-Metal Battery under a Lean Electrolyte

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