Cu-CNTs current collector fabricated by deformation-driven metallurgy for anode-free Li metal batteries

Shan, Cheng; Qin, Zhiwei; Xie, Yuming; Meng, Xianghai; Chen, Jialin; Chang, Yuexin; Zang, Ranzhuoluo; Wan, Long; Huang, Yongxian

doi:10.1016/j.carbon.2022.12.074

Cited by 22 publications

(14 citation statements)

References 69 publications

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“…In AFLMBs, inactive lithium and dendritic lithium significantly threaten battery performance, causing performance degradation, short circuits, and even explosions or fires. 67 In summary, the results demonstrate that Zn 3 N 2 @Cu CCs exhibit a superior film and induce stable lithium deposition and stripping processes on the CC surface, enhancing the interface stability during long-term cycling. This performance is superior to bare Cu CCs in the AFLMB system, further confirming the advanced nature of the samples prepared by us.…”

Section: Resultsmentioning

confidence: 71%

“…In contrast, the bare Cu (Figure c,d) surface displayed dendritic lithium growth, which possesses a large surface area that leads to increased lithium-electrolyte reactions and ultimately more residual inactive lithium on the current collector. In AFLMBs, inactive lithium and dendritic lithium significantly threaten battery performance, causing performance degradation, short circuits, and even explosions or fires …”

Section: Resultsmentioning

confidence: 99%

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Lithiophilic Zn₃N₂-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Zhu,

Wu,

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Anode-free lithium metal batteries (AFLMBs) offer high-energy-density battery systems, but their commercial viability is hindered by irregular lithium dendrite growth and “dead Li” formation caused by current collector defects. This study employed filtered cathode vacuum arc (FCVA) technology to fabricate Cu current collectors (CCs) with a lithiophilic Zn3N2 film. This advanced preparation process ensures an evenly distributed film that reduces the nucleation overpotential, homogenizes the interfacial electric field during plating/stripping processes, inhibits lithium dendrite growth, and forms a stable solid-electrolyte interphase (SEI). Our results show that the advanced Zn3N2@Cu CCs exhibit superior performance with a high CE of above 99.3% after 230 cycles at a current density of 0.5 mA cm–2 and an area capacity of 1 mAh cm–2. Additionally, Li–Zn3N2@Cu||Li–Zn3N2@Cu symmetrical cells had a longer stable cycle time of over 1000 h than that of Li||Li and Li–Cu||Li–Cu symmetrical cells at a current density of 1 mA cm–2 and an area capacity of 2 mAh cm–2. Compared with bare Cu CCs, the capacity retention rate is increased from 14.9 to 63.1% after 100 cycles with a 0.5C rate in the AFLMBs with LFP as the cathode. This work provides a pioneering, eco-friendly, and effective solution for the fabrication of anode CCs in AFLMBs, addressing a significant challenge in their commercial application.

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Section: Resultsmentioning

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Lithiophilic Zn₃N₂-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Zhu,

Wu,

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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“…Similar phenomenon is also observed by Shan et al in previous work. [49] Figure 1c,d shows the SEM images of surface of the sample after dealloying. The dense, solid particles seen in Figure 1b now becomes a very porous structure with thin walls of ≈40 nm.…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li‐Metal Batteries

Bai

et al. 2023

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The commercialization of high-energy Li-metal batteries is impeded by Li dendrites formed during electrochemical cycling and the safety hazards it causes. Here, a novel porous copper current collector that can effectively mitigate the dendritic growth of Li is reported. This porous Cu foil is fabricated via a simple two-step electrochemical process, where Cu-Zn alloy is electrodeposited on commercial copper foil and then Zn is electrochemically dissolved to form a 3D porous structure of Cu. The 3D porous Cu layers on average have a thickness of ≈14 um and porosity of ≈72%. This current collector can effectively suppress Li dendrites in cells cycled with a high areal capacity of 10 mAh cm −2 and under a high current density of 10 mA cm −2 . This electrochemical fabrication method is facile and scalable for mass production. Results of advanced in situ synchrotron X-ray diffraction reveal the phase evolution of the electrochemical deposition and dealloying processes.

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“…1D carbon nanostructures, which combine the advantageous properties of functional 1D nanostructures with those of carbon nanomaterials, have been acknowledged as potential materials for electrochemical energy storage devices. [26,[96][97][98] They were first reported in 2003 for the creation of super-tough carbon nanotubes (CNTs) using a coagulation-based spinning method. [99] Following this, there have been numerous applications of 1D carbon nanomaterials in various types of batteries including Li ions battery, Li-air battery, zinc-air battery, aluminum-air battery, and Li-S battery.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

“…This was prepared using a deformation‐driven metallurgical process, resulting in Cu‐CNTs, which was effectively applied to AFLMBs. [ 98 ] Electron backscattered diffraction reveals the grain distribution on the electrode surface. Unlike the larger average grain size observed on commercial copper foil, the Cu‐CNTs electrode showcases a gradient CNTs distribution and a compact, refined grain structure, attributed to intense plastic deformation.…”

Section: D Carbon Nanostructuresmentioning

confidence: 99%

Impact of Morphological Dimensions in Carbon‐Based Interlayers on Lithium Metal Anode Stabilization

Guan,

Wang,

Liu

et al. 2023

Advanced Energy Materials

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Lithium metal batteries (LMBs) offer high energy density and promise as a future technology. Yet, their adoption is hindered by safety concerns and cycle life stability, arising from Li dendrite formation, solid electrolyte interphase instability, and volume changes during cycling. In response to these challenges, carbon‐based materials have been utilized as an artificial interface layer for modifying the surface of copper current collector in LMBs. Among the diverse carbon‐based materials, 0D carbon, with its high specific surface area, is advantageous for enhancing Li ion transport rates and ensuring uniform current distribution. 1D carbon structures foster a network that facilitates Li ion diffusion, while 2D carbon establishes a protective layer, mitigating side reactions. 3D carbon structures promote Li deposition within their internal cavities, effectively controlling volume fluctuations. With this understanding, this review delves into the latest advancements in carbon‐based materials for modifying copper current collectors. It offers a detailed exploration of how each dimension of carbon‐based materials contributes to regulating Li deposition. Furthermore, the ongoing challenges and potential avenues in the development of carbon‐modified copper current collectors for LMBs are spotlighted, aiming to provide insightful guidance for the design of anode‐free Li metal batteries.

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Cu-CNTs current collector fabricated by deformation-driven metallurgy for anode-free Li metal batteries

Cited by 22 publications

References 69 publications

Lithiophilic Zn₃N₂-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Lithiophilic Zn₃N₂-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li‐Metal Batteries

Impact of Morphological Dimensions in Carbon‐Based Interlayers on Lithium Metal Anode Stabilization

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Cu-CNTs current collector fabricated by deformation-driven metallurgy for anode-free Li metal batteries

Cited by 22 publications

References 69 publications

Lithiophilic Zn3N2-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Lithiophilic Zn3N2-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Electrochemically Dealloyed 3D Porous Copper Nanostructure as Anode Current Collector of Li‐Metal Batteries

Impact of Morphological Dimensions in Carbon‐Based Interlayers on Lithium Metal Anode Stabilization

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Lithiophilic Zn₃N₂-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries

Lithiophilic Zn₃N₂-Modified Cu Current Collectors by a Novel FCVA Technology for Stable Anode-Free Lithium Metal Batteries