An all-electrochem-active silicon anode enabled by spontaneous Li–Si alloying for ultra-high performance solid-state batteries

Zhang, Zhiyong; Sun, Zhefei; Han, Xiang; Liu, Yan; Pei, Shanpeng; Li, Yahui; Luo, Linshan; Su, Pengfei; Lan, Chaofei; Zhang, Ziqi; Xu, Shaowen; Guo, Shengshi; Huang, Wei; Chen, Songyan; Wang, Ming-Sheng

doi:10.1039/d3ee03877g

Cited by 14 publications

(4 citation statements)

References 37 publications

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“…S1 and S2,† the Li 21 Si 5 powder in this study was prepared by the spontaneous Li–Si alloying method we have reported. 32 When the Li 21 Si 5 alloy comes into contact with water and oxygen, it will inevitably undergo a chemical reaction and become inactive. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Among them, the Li 21 Si 5 alloy used as a pre-lithiation additive has the advantages of low cost, extremely high lithium enrichment, and low chemical potential. 22–31 In our previously reported work, 32 the Li 21 Si 5 alloy is synthesized using a quick and spontaneous Li–Si alloying reaction by utilizing defects in the oxide layer of micron-sized Si. And it achieved ultra-high ICE of the solid-state battery without contact with the solution.…”

Section: Introductionmentioning

confidence: 99%

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PEO-Li₂₁Si₅ as a pre-lithiation and structural protection layer for lithium-ion batteries

Zhang,

Sun,

Pei

et al. 2024

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

PEO-Li₂₁Si₅ as a pre-lithiation and structural protection layer for lithium-ion batteries

Zhang,

Sun,

Pei

et al. 2024

J. Mater. Chem. A

Self Cite

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“…The XPS results after cycling (Figure 3d) reveal that the higher amount of SE decomposition by-products observed for the electrode containing Li 21 Si 5 as the conductive additive triggers the spontaneous decomposition reaction. [32] Further, operando spectroscopy analysis methods have been adopted to investigate the interface degradation in ASSBs. This analysis tool has received more attention because it provides more interface information during the battery operation.…”

Section: Investigation Of Electro(chemical) Degradation Of Si/sulfide...mentioning

confidence: 99%

“…[29,30] Moreover, it has been well identified that the Si anode is more suitable for constructing ASSB with sulfide SE than the Li metal anode, owing to enhanced chemical and thermodynamic stability. [31,32] However, various challenging issues need to be analyzed and resolved to achieve stable performance. The high chemical instability of sulfide SE forming decomposition by-products such as Li 2 S and Li 3 P, etc.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of In‐Depth Analysis Techniques for Si Anodes in Sulfide‐Based All‐Solid‐State Batteries: A Concise Overview and Future Perspective

Jayasubramaniyan,

Kim,

et al. 2024

ChemElectroChem

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The utilization of Si anode in sulfide‐based all‐solid‐state batteries (ASSBs) has gained more research attention in recent years to overcome the interface challenges associated with ASSB‐containing Li metal anode. However, the volume expansion feature of the Si, stress/strain evolution inside the electrode, and the parasitic side reaction at the Si/sulfide SE interface are the most predominant limiting factors for practical device applications. It is necessary to investigate and understand the interface challenges through in‐depth analysis in real‐time battery operation to design highly efficient ASSBs for commercial device applications. Hence, this perspective paper provides a summary of the characterization tools and the analysis results related to the Si/sulfide SE interface. Moreover, in this perspective, we emphasize the importance of further investigation of the interface through more advanced in‐depth/operando analysis tools to gain insightful information about the anodic interface, which could be useful for the researchers to design efficient research strategies for solving the challenging issues associated with the anodic interface.

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A Hybrid LiCl/Li_xSn Conductive Interlayer to Unlock the Potential of Solid‐State Lithium Metal Batteries

Ding,

Tao,

Fan

et al. 2024

Adv Funct Materials

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Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte has a great potential for application in solid‐state lithium metal batteries. However, due to the poor interfacial contact and thermodynamic instability between LATP and Li metal, a series of interfacial problems, such as high interfacial resistance, undesirable interfacial reaction and dendrite growth are deeply criticized. Herein, a hybrid LiCl/LixSn conductive interlayer is constructed through an in situ electrochemical reaction of SnCl4 with Li metal to effectively improve the compatibility and stability of the Li/LATP interface. LiCl with both electronic insulation and high ionic conductivity can provide fast Li+ diffusion channel, block electron injection, avoid side reactions, and effectively inhibit dendrite growth. LixSn can reduce interfacial impedance, eliminate local electric field concentration, and significantly improve interfacial wettability. Under the protection of LiCl/LixSn hybrid interlayer, the initial resistance of the symmetric battery is reduced from 1066.3 to 133.6 Ω cm−2, achieving a high critical current density of 1.4 mA cm−2. At 0.1 mA cm−2/0.1 mAh cm−2 and 0.2 mA cm−2/0.2 mAh cm−2, the symmetric battery can cycle stably for more than 4000 h at 25 °C. Moreover, the full battery displays a high capacity retention ratio of 90.4% after 420 cycles at 0.5 C.

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An all-electrochem-active silicon anode enabled by spontaneous Li–Si alloying for ultra-high performance solid-state batteries

Abstract: Li-Si alloys are considered as a key anode material for advanced silicon-based solid-state batteries (Si-ASSBs) due to their high ionic/electronic conductivity. However, the high content of Li in Li-Si alloys...

Cited by 14 publications

References 37 publications

PEO-Li₂₁Si₅ as a pre-lithiation and structural protection layer for lithium-ion batteries

PEO-Li₂₁Si₅ as a pre-lithiation and structural protection layer for lithium-ion batteries

Recent Progress of In‐Depth Analysis Techniques for Si Anodes in Sulfide‐Based All‐Solid‐State Batteries: A Concise Overview and Future Perspective

A Hybrid LiCl/Li_xSn Conductive Interlayer to Unlock the Potential of Solid‐State Lithium Metal Batteries

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An all-electrochem-active silicon anode enabled by spontaneous Li–Si alloying for ultra-high performance solid-state batteries

Abstract: Li-Si alloys are considered as a key anode material for advanced silicon-based solid-state batteries (Si-ASSBs) due to their high ionic/electronic conductivity. However, the high content of Li in Li-Si alloys...

Cited by 14 publications

References 37 publications

PEO-Li21Si5 as a pre-lithiation and structural protection layer for lithium-ion batteries

PEO-Li21Si5 as a pre-lithiation and structural protection layer for lithium-ion batteries

Recent Progress of In‐Depth Analysis Techniques for Si Anodes in Sulfide‐Based All‐Solid‐State Batteries: A Concise Overview and Future Perspective

A Hybrid LiCl/LixSn Conductive Interlayer to Unlock the Potential of Solid‐State Lithium Metal Batteries

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Product

Resources

About

PEO-Li₂₁Si₅ as a pre-lithiation and structural protection layer for lithium-ion batteries

PEO-Li₂₁Si₅ as a pre-lithiation and structural protection layer for lithium-ion batteries

A Hybrid LiCl/Li_xSn Conductive Interlayer to Unlock the Potential of Solid‐State Lithium Metal Batteries