Cu1.81S-doped carbon modified copper foam as current collector for high-performance lithium metal batteries

Su, Yuxi; Liu, Shuai; Shi, Jing; Huang, Minghua; Shi, Zhicheng; Wang, Huanlei; Wang, Ting

doi:10.1016/j.jallcom.2023.169695

Cited by 9 publications

(4 citation statements)

References 54 publications

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“…Since then, many researchers have used Sand time to characterize and determine the appearance of dendrites. [65,[125][126] Bai et al observed the electrodeposition morphology of lithium metal in glass capillaries by in situ optical microscopy, and found that a bunch of dendrites with obvious tip growths would appear when the lithium salt on the surface of the negative electrode was depleted, which also confirms the conclusion of Sand. [127] However, the reduction of the surface concentration to zero corresponds only to the concentration gradient reaching its maximum value and the limiting diffusion current density, i. e., the diffusion rate reaching its maximum value, when the dendrites grow the fastest and are more easily observed.…”

Section: Mass Transfer Stepmentioning

confidence: 73%

Lithium Metal Anode in Electrochemical Perspective

Wang,

Wu,

Yao

et al. 2024

ChemElectroChem

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Lithium metal is a possible anode material for building high energy density secondary batteries, but its problems during cycling have hindered the commercialization of lithium metal secondary batteries. Until now, many sophisticated techniques have been used to obtain rich micro‐morphological and physicochemical information of the deposition layer and the solid electrolyte interface (SEI), and to develop improvement strategies based on the information and achieve remarkable results. Regulating the reaction process around key links is a classic strategy to achieve expected results. Based on this empirical fact, we artificially highlighted the differences in the apparent performance of lithium metal anode using different series of electrolytes. We used microelectrode technology to analyze the reaction mechanisms and kinetic characteristics of each elementary step under all electrolyte conditions, revealing common laws that affect apparent performance and the basic steps that have a decisive impact on apparent performance. We discussed and elucidated the relevant physical and chemical principles, providing a clear basis for improving the pertinence and efficiency of improvement strategies.

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Section: Mass Transfer Stepmentioning

confidence: 73%

Lithium Metal Anode in Electrochemical Perspective

Wang,

Wu,

Yao

et al. 2024

ChemElectroChem

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“…The Raman shifts at 204 and 315 cm –1 in Figure c correspond to E g and A 1g modes of the SnS 2 . Additionally, the Raman shifts at 287 and 640 cm –1 belong to Mn 2 SnS 4 and Mn–S vibration, respectively. , Moreover, the existence of carbon can be verified through D-band (1374 cm –1 ) and G-band (1559 cm –1 ), respectively. , TGA measurements of the MSS@NSC and MSS are executed under an air condition. As presented in Figure S7, the carbon content in MSS@NSC reaches approximately 7.8 wt %.…”

Section: Resultsmentioning

confidence: 93%

“…43,44 Moreover, the existence of carbon can be verified through D-band (1374 cm −1 ) and G-band (1559 cm −1 ), respectively. 45,46 TGA measurements of the MSS@ NSC and MSS are executed under an air condition. As presented in Figure S7, the carbon content in MSS@NSC reaches approximately 7.8 wt %.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Heterostructured Mn–Sn Bimetallic Sulfide Nanocubes Confined in N, S-co-Doped Carbon Framework as High-Performance Anodes for Sodium-Ion Batteries

Li,

Ke,

Liu

et al. 2024

Langmuir

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Benefiting from its high theoretical capacity, tin disulfide (SnS 2 ) draws abundant interest and attention for its promising practical prospect for sodium-ion batteries (SIBs). However, the huge volumetric variation in sodiation/desodiation reactions usually results in the fast decay of rate and cycling properties, which seriously obstructs its future applicable foregrounds. Herein, heterostructured Mn−Sn bimetallic sulfide nanocubes confined in N and S-codoped carbon (MSS@NSC) were rationally designed via a facile coprecipitation followed by a sulfurization strategy. When used as anodes for SIBs, the heterojunctions at the interfaces effectively accelerate the Na + diffusion rate to promote the sodium-storage reaction kinetics. The N and S-codoped carbon provides a rapid conductive framework for the fast charge transport during the sodium-storage process. Moreover, the beneficial confinement effect of the NSC layer effectively guarantees a superb cycle property for the MSS@NSC anode. The favorable synergistic effects between the highly conductive framework of the NSC and MSS heterostructure endow the MSS@NSC anode with satisfactory electrochemical Nastorage properties.

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“…The first involves 3D structural modifications based on Sand’s time theory, which reduces lithium dendrite growth rate through smaller and more homogeneous surface current density, improving battery performance. Various 3D structures like Cu foam, , Cu nanowires, Cu nanocolumns, and other special 3D structures , have been applied to AFLMBs to achieve high performance. The second approach utilizes lithiophilic materials for the Cu CC modification.…”

Section: Introductionmentioning

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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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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Cu1.81S-doped carbon modified copper foam as current collector for high-performance lithium metal batteries

Cited by 9 publications

References 54 publications

Lithium Metal Anode in Electrochemical Perspective

Lithium Metal Anode in Electrochemical Perspective

Heterostructured Mn–Sn Bimetallic Sulfide Nanocubes Confined in N, S-co-Doped Carbon Framework as High-Performance Anodes for Sodium-Ion Batteries

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

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Cu1.81S-doped carbon modified copper foam as current collector for high-performance lithium metal batteries

Cited by 9 publications

References 54 publications

Lithium Metal Anode in Electrochemical Perspective

Lithium Metal Anode in Electrochemical Perspective

Heterostructured Mn–Sn Bimetallic Sulfide Nanocubes Confined in N, S-co-Doped Carbon Framework as High-Performance Anodes for Sodium-Ion Batteries

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

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Product

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