Synergistic effect of vinylene carbonate (VC) and LiNO3 as functional additives on interphase modulation for high performance SiO anodes

Yang, Yaozong; Xu, Yuesong; Li, Zhaolin; Yao, N.P.; Wang, Jie; Feng, Zhenhe; Wang, Ke; Xie, Jun; Zhao, Hailei

doi:10.1016/j.jpowsour.2021.230595

Cited by 15 publications

(20 citation statements)

References 59 publications

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“…Thereby, high ionic conductivity of the electrolyte can be fulfilled as well. As a representative example, vinylidene carbonate (VC), as a widely used unsaturated ingredient in electrolytes, can be easily polymerized to obtain poly(vinyl carbonate) (PVCA). − The PVCA with a low glass transition temperature is favorable for ionic diffusion in electrolytes. Cui et al reported an all-solid-state electrolyte based on a PVCA polymer with an oxidative stability window of 4.5 V (vs Li/Li + ) and an ionic conductivity of 9.82 × 10 –5 S cm –1 at 50 °C.…”

Section: Introductionmentioning

confidence: 99%

Synergy of an In Situ-Polymerized Electrolyte and a Li₃N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

Zhang

Gao

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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The long-term operation of a Li-metal anode remains a great challenge due to the severe dendrite growth in an organic liquid electrolyte. To protect a Li-anode surface from continuous corrosion by an electrolyte, a consistent and robust solid electrolyte interface (SEI) is an essential prerequisite. This work proposes a secure gel polymer electrolyte, which is in situ constructed via a facile polymerization process of vinylidene carbonate inside Li-metal batteries. The liquid components that are not involved in polymerization are well entrapped in the poly(vinyl carbonate) framework, leading to a high oxidative stability of up to 4.5 V (vs Li/Li + ). A Li 3 N−LiFreinforced SEI resulting from the reduction of fluoroethylene carbonate and lithium nitrate additives has a synergistic effect on the suppression of Lidendrite growth. The densely packed Li deposition behavior is revealed by in situ/ex situ microscopic observations. Steady cycling of over 2500 h with a relatively low voltage hysteresis is achieved by the Li||Li symmetric cells. A Coulombic efficiency above 96% upon long-term cycling is available for the asymmetric Li||Cu cells. The smooth operation of batteries with commercial LiFePO 4 cathodes further indicates that the SEI with homogeneity in composition and structure prompts Li deposition with alleviative dendrites.

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Section: Introductionmentioning

confidence: 99%

Synergy of an In Situ-Polymerized Electrolyte and a Li₃N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

Zhang

Gao

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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“…On the other side, VC has a relatively high reduction potential (≈1.4 V vs. Li/Li + ), and its degradation products (polycarbonates) have good flexibility, creating a stable and elastic SEI film. 26,28–30 Nevertheless, SEIs formed with VC usually show high ionic resistance owing to its poor Li + diffusivity. 26…”

Section: Resultsmentioning

confidence: 99%

“…26,28–30 Nevertheless, SEIs formed with VC usually show high ionic resistance owing to its poor Li + diffusivity. 26…”

Section: Resultsmentioning

confidence: 99%

“…The latter relies on forming an articial protecting coating over the electrode, also referred to as articial SEI. Regarding the in vivo design, a large variety of electrolyte additives have already been explored, such as vinylene carbonate (VC), 26,[28][29][30] uoroethylene carbonate (FEC), 27,28,31,32 triuoropropylene carbonate, 32 carbon dioxide, 33 or lithium bis(oxalate)borate. 20,34 These electrolyte additives undergo a cathodic decomposition during SEI formation leading to an improved cyclability.…”

Section: Search For Electrolyte Additives For Si-gr Electrodes Using ...mentioning

confidence: 99%

“…In particular, carbonate-based additives such as VC and FEC were reported to form stable SEI lms. 20,26 FEC is an appropriate additive for materials undergoing high volume changes since it seems to provide improved mechanical stability and high ionic conductivity for the SEI layer. 27,35 However, FEC is constantly consumed, leading to a fast capacity fading.…”

Section: Search For Electrolyte Additives For Si-gr Electrodes Using ...mentioning

confidence: 99%

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The redox mediated – scanning droplet cell system for evaluation of the solid electrolyte interphase in Li-ion batteries

et al. 2023

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In Situ Artificial Hybrid SEI Layer Enabled High‐Performance Prelithiated SiO_x Anode for Lithium‐Ion Batteries

Sun

Zhang

Chai

et al. 2023

Adv Funct Materials

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Considered the promising anode material for next‐generation high‐energy lithium‐ion batteries, SiOx has been slow to commercialize due to its low initial Coulombic efficiency (ICE) and unstable solid electrolyte interface (SEI) layer, which leads to reduced full‐cell energy density, short cycling lives, and poor rate performance. Herein, a novel strategy is proposed to in situ construct an artificial hybrid SEI layer consisting of LiF and Li3Sb on a prelithiated SiOx anode via spontaneous chemical reaction with SbF3. In addition to the increasing ICE (94.5%), the preformed artificial SEI layer with long‐term cycle stability and enhanced Li+ transport capability enables a remarkable improvement in capacity retention and rate capability for modified SiOx. Furthermore, the full cell using Li(Ni0.8Co0.1Mn0.1)O2 and a pre‐treated anode exhibits high ICE (86.0%) and capacity retention (86.6%) after 100 cycles at 0.5 C. This study provides a fresh insight into how to obtain stable interface on a prelithiated SiOx anode for high energy and long lifespan lithium‐ion batteries.

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Synergistic effect of vinylene carbonate (VC) and LiNO3 as functional additives on interphase modulation for high performance SiO anodes

Cited by 15 publications

References 59 publications

Synergy of an In Situ-Polymerized Electrolyte and a Li₃N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

Synergy of an In Situ-Polymerized Electrolyte and a Li₃N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

The redox mediated – scanning droplet cell system for evaluation of the solid electrolyte interphase in Li-ion batteries

In Situ Artificial Hybrid SEI Layer Enabled High‐Performance Prelithiated SiO_x Anode for Lithium‐Ion Batteries

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Synergistic effect of vinylene carbonate (VC) and LiNO3 as functional additives on interphase modulation for high performance SiO anodes

Cited by 15 publications

References 59 publications

Synergy of an In Situ-Polymerized Electrolyte and a Li3N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

Synergy of an In Situ-Polymerized Electrolyte and a Li3N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

The redox mediated – scanning droplet cell system for evaluation of the solid electrolyte interphase in Li-ion batteries

In Situ Artificial Hybrid SEI Layer Enabled High‐Performance Prelithiated SiOx Anode for Lithium‐Ion Batteries

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Product

Resources

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Synergy of an In Situ-Polymerized Electrolyte and a Li₃N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

Synergy of an In Situ-Polymerized Electrolyte and a Li₃N–LiF-Reinforced Interface Enables Long-Term Operation of Li-Metal Batteries

In Situ Artificial Hybrid SEI Layer Enabled High‐Performance Prelithiated SiO_x Anode for Lithium‐Ion Batteries