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...

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

“…(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.…”

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

“…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.…”

“…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.…”

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

“…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.…”

“…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.…”