Improving Li reversibility in Li metal batteries through uniform dispersion of Ag nanoparticles on graphene

Gao, Yu; Cui, Bing-Feng; Wang, Jiajun; Sun, Hansong; Chen, Qiang; Deng, Yida; Han, Xiaopeng; Hu, Wenbin

doi:10.1007/s12598-022-02044-8

Cited by 25 publications

(10 citation statements)

References 50 publications

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“…The exchange current density of Li@Cu 3 Sn-150 (4.32 mA cm À 2 ) is much higher than bare Li (1.51 mA cm À 2 ), which means that Li@Cu 3 Sn-150 has a higher exchange current density and a faster charge transfer rate compared with bare Li. [28] Low nucleation overpotentials and high interfacial exchange current densities confirm an efficient kinetics of Li + transport at deposition interface. [9c] The change of electrode thickness before and after cycling could explain the stability of it.…”

Section: Resultsmentioning

confidence: 97%

Lithiophilic Cu₃Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Ma,

Li,

et al. 2023

ChemistrySelect

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The development of lithium metal battery is severely restricted by its uncontrolled dendrite growth and volume change. In this work, we designed a controllable lithiophilic Cu3Sn modified commercial Cu foil as current collector via simple industrial electroplating and heat treatment. As a Li‐reservoir substrate for efficient deposition/stripping of Li metal, the introduction of Cu3Sn not only increases multiple active sites for the deposition of Li, but also provides more transfer paths for lithium ions. The Li metal anodes prepared by molten Li on the Cu current collector with dispersed Cu3Sn active sites provide a uniform lithiophilic surface, which could effectively promote a uniform Li deposition/stripping and suppress the formation of lithium dendrites. As a result, the assembled symmetric battery is stable at a low over‐point position for 1600 h without short circuit at 1 mA cm−2 with 1 mAh cm−2, the full battery paired with LiFePO4 still maintains a high‐capacity retention rate of 97.1 % and a coulombic efficiency (CE) of 99.5 % after 400 cycles at a current density of 2 C. This work provides a facile and controllable strategy for the design of current collectors with high lithium affinity for stable lithium metal anode applications.

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Section: Resultsmentioning

confidence: 97%

Lithiophilic Cu₃Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Ma,

Li,

et al. 2023

ChemistrySelect

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“…According to Sand's time model, these 3D current collectors with a high surface area can effectively decrease the local current density to realize a uniform Li plating/stripping behavior. [25][26][27] Moreover, the abundant space in 3D current collectors can well confine the deposited Li and buffer the infinite volume change during cycling. 28 Currently, various 3D skeletons have been proposed to accommodate the deposited Li metal.…”

Section: Introductionmentioning

confidence: 99%

Homogeneous Li⁺flux realized by anin situ-formed Li–B alloy layer enabling the dendrite-free lithium metal anode

Tao

Xie

Liu

et al. 2023

Inorg. Chem. Front.

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“…Recently, three-dimensional (3D) porous Si materials with large particle sizes have been shown to exhibit high weight and volumetric energy density. − However, the issue of electrical conductivity of Si particles remains a significant challenge to be addressed. Another research indicates that certain metallic elements, such as nickel (Ni), , silver, , copper (Cu), , and iron, can serve as effective channels for the transportation of lithium ions. − Among these metals, Cu has gained considerable attention as a result of its low cost, excellent conductivity, and widespread availability . For instance, Li et al reported Si–Cu composites were prepared utilizing a two-potential pulse electrodeposition method .…”

Section: Introductionmentioning

confidence: 99%

“…33−36 However, the issue of electrical conductivity of Si particles remains a significant challenge to be addressed. Another research indicates that certain metallic elements, such as nickel (Ni), 37,38 silver, 39,40 copper (Cu), 41,42 and iron, 43 can serve as effective channels for the transportation of lithium ions. 44−46 Among these metals, Cu has gained considerable attention as a result of its low cost, excellent conductivity, and widespread availability.…”

Section: ■ Introductionmentioning

confidence: 99%

Tailored Hierarchical Silicon Microparticles with Copper/Carbon Layers for High Cycling Stability Lithium-Ion Storage

Xie,

Chen,

Yang

et al. 2023

Energy Fuels

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Three-dimensional porous Si with large particles offers a high mass and volume capacity. The low electrical conductivity of the material, however, remains a significant hurdle to overcome. In this work, nanoporous SiCu microparticles (np-SiCuMP) were synthesized by dealloying a SiCuAl eutectic alloy. To enhance the cycling stability of Si microparticles, the carbon layer was coated on the surface of np-SiCuMP using the pyrolysis glucose method (np-SiCuMP@C). Highly conductive Cu provides fast electron/ion pathways, thereby overcoming the poor conductivity of Si microparticles. Moreover, the smaller Cu grains and carboncoating layer as a support dispersed around Si enhance the cycling stability of Si microparticle electrodes, which prevents structural collapse caused by volume shrinkage during lithium removal. Therefore, the discharge specific capacity of np-SiCuMP@C is as high as 1114.3 mAh g −1 with a capacity retention rate of 70% after 200 cycles at 0.05 C, which is significantly better than that of np-Si 70 Cu 30 MP (54%). This novel CuSi composite dispersed in amorphous carbon presents a promising approach for the design of Si particle anode materials.

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Improving Li reversibility in Li metal batteries through uniform dispersion of Ag nanoparticles on graphene

Cited by 25 publications

References 50 publications

Lithiophilic Cu₃Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Lithiophilic Cu₃Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Homogeneous Li⁺flux realized by anin situ-formed Li–B alloy layer enabling the dendrite-free lithium metal anode

Tailored Hierarchical Silicon Microparticles with Copper/Carbon Layers for High Cycling Stability Lithium-Ion Storage

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Improving Li reversibility in Li metal batteries through uniform dispersion of Ag nanoparticles on graphene

Cited by 25 publications

References 50 publications

Lithiophilic Cu3Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Lithiophilic Cu3Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Homogeneous Li+flux realized by anin situ-formed Li–B alloy layer enabling the dendrite-free lithium metal anode

Tailored Hierarchical Silicon Microparticles with Copper/Carbon Layers for High Cycling Stability Lithium-Ion Storage

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Resources

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Lithiophilic Cu₃Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Lithiophilic Cu₃Sn Modified Cu Foil as Current Collector for Stable Lithium Metal Anodes

Homogeneous Li⁺flux realized by anin situ-formed Li–B alloy layer enabling the dendrite-free lithium metal anode