Predicting low-impedance interfaces for solid-state batteries

Swift, Michael W.; Jagad, Harsh D.; Park, Jiyun; Qie, Yu; Wu, Yuehua; Qi, Yue

doi:10.1016/j.cossms.2022.100990

Cited by 13 publications

(5 citation statements)

References 77 publications

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“…Dipole moments that form between LiPON and LiCoO 2 have been shown to be stronger than 1 eV, inducing a significantly large band offset between the two . Ab initio calculations predict smaller band offsets but also show how important the electrolyte composition and state of charge of the cathode are to band bending . (The direction of the bending is often predicted to switch signs between fully lithiated and delithiated states.)…”

Section: Discussionmentioning

confidence: 99%

“…13 Ab initio calculations predict smaller band offsets but also show how important the electrolyte composition and state of charge of the cathode are to band bending. 29 (The direction of the bending is often predicted to switch signs between fully lithiated and delithiated states.) Although similar band bending calculations are absent for LiPON/LVO, upward bending in LVO would draw Li ions toward the interface while repelling excess electrons.…”

Section: ■ Discussionmentioning

confidence: 99%

“…Recent theoretical calculations of cathode/solid electrolyte interfaces include interface stability calculations using DFT for LCO/LYC interfaces, a coupled electrochemical–mechanical–thermal model of LCO/LiPON/Li, a DFT potential map at cathode/electrolyte interfaces, and structural and compositional factors that control the Li-ion conductivity in LiPON electrolytes using ab initio molecular dynamics . Recent experimental studies of interfaces include Li ion dynamics at interfaces using electron holography TEM for LCO/LiPON/Pt, LCO/LiPON interface analysis using ToF-SIMS, XPS, and UPS, a Li/LiPON/V 2 O 5 interface study using TEM and impedance analysis, an in situ STEM-EELS observation of nanoscale interfacial phenomena in all-solid-state batteries, and N and P gradients from the thermal decomposition of LiPON/Li interfaces studied by cryogenic electron microscopy …”

Section: Introductionmentioning

confidence: 99%

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Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V₂O₅/LiPON Interfaces

Levy

Ferrari

Rosas

et al. 2023

ACS Appl. Energy Mater.

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A combination of depth-resolved cathodoluminescence spectroscopy (DRCLS) and X-ray photoemission depth profiling (XPS) measured the pronounced changes in both the electronic density of states and lithium composition near the nanoscale Li x V 2 O 5 /LiPON interface. DRCLS studies of electrochemically lithiated bare V 2 O 5 and the sputterdeposited V 2 O 5 plus LiPON overlayer electrochemically lithiated in stages both showed that in the bulk the luminescence intensity of the "split-off" hybridized bonding density of states was anticorrelated with XPSmeasured Li content, decreasing as the Li content increased. However, the LiPON overlayer was found to modify the band structure of the underlying Li x V 2 O 5 (LVO) to a depth of at least 30 nm beneath the V 2 O 5 interface. DRCLS spectra near the electrochemically lithiated LiPON/ LVO interface showed a significant intensity of the split-off band, implying a low Li content. However, XPS depth profiling revealed a pronounced negative gradient of Li extending from a maximum Li content at the intimate LiPON boundary to its lowest content of ∼30 nm into the V 2 O 5 in the same region, indicating a strong interaction between band structure and Li electrochemical potential near this heterojunction. These results provide evidence for substantial effects on the local band structure near an electrolyte/cathode interface and insights into the electrochemical interface behavior of solid-state batteries in general.

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Section: Discussionmentioning

confidence: 99%

Section: ■ Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V₂O₅/LiPON Interfaces

Levy

Ferrari

Rosas

et al. 2023

ACS Appl. Energy Mater.

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“…All‐solid‐state polymer electrolyte‐based hybrid batteries will serve as alternative energy devices. Research in the direction of polymer based composite materials involving ions in the solid/liquid state is one of the major and immediate requirements to be addressed [240] . One of the major impediments to the widespread use of EVs is the lack of batteries that are safer than liquid lithium‐ion batteries, which can store more energy and charge at a faster rate.…”

Section: Research Avenues For Polymers In Automobilesmentioning

confidence: 99%

“…Research in the direction of polymer based composite materials involving ions in the solid/liquid state is one of the major and immediate requirements to be addressed. [240] One of the major impediments to the widespread use of EVs is the lack of batteries that are safer than liquid lithium-ion batteries, which can store more energy and charge at a faster rate. The safety concern arises with the use of volatile flammable electrolytes.…”

Section: Research Avenues For Polymers In Automobilesmentioning

confidence: 99%

Recent Developments and Research Avenues for Polymers in Electric Vehicles

Gupta¹,

Toksha

Patel³

et al. 2022

The Chemical Record

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Plastics have been an indispensable material of choice in automobiles with wide range of applications such as interior, exterior, under the hood, and lighting/wiring applications. The prime motive of inclusion of these materials is increase in fuel efficiency and reduction in carbon footprint by replacing the energy intensive metallic counterparts. The current decade i. e., the 2020s has seen a recent surge in the sales of electronic vehicles. Although these numbers are promising, the growth in the rest of the parts of the world is not encouraging. It is primarily due to the skepticism involving battery life and efficiency, profitability, and environmental footprint when compared to conventional and hybrid vehicles. Also, a more concerted effort is needed in the lagging areas in order to install the required infrastructure. The emergence of plastics in the development and acceptance of e-vehicles is going to be pivotal especially when the efficiency and profitability are considered as they give the required freedom to the engineers for the design and development of various parts and sizes by replacing the bulkier and more dense materials. Also, the research on bionanocomposites has received great interest from the research community due to their versatility in application along with their eco-friendly nature throughout the lifecycle starting from feedstock up to end-of-life treatment. This review paper will be one of its kind to present a critical review of the recent developments of polymers suitable for use in e-vehicles. Also, a comprehensive discussion comprising of newer research areas for polymers in their use for e-vehicles will be presented.

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Lithium Phosphorous Oxynitride as an Advanced Solid‐State Electrolyte to Boost High‐Energy Lithium Metal Battery

Zou,

Xiao,

Lin

et al. 2024

Adv Funct Materials

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Lithium phosphorous oxynitride (LiPON) as one of the most successful solid‐state electrolytes (SSEs), has attracted great interest both in academia and technology due to its exceptional interfacial compatibility, broad electrochemical stability window, and excellent thermal stability, which enables the realization of extremely stable electrolyte/electrode interphase toward high‐energy density solid‐state lithium‐metal batteries (SSLMBs). However, insufficiency in ionic diffusion, mechanical robustness, and interfacial stability hinder its commercialization process. Herein, the characteristics of amorphous structure LiPON, fundamental understanding on the bulk ionic diffusion and electrode/electrolyte interface are systematically discussed, and the improvement strategies to boost the electrochemical performance are highlighted. Then, innovative characterization and computational methods help to unravel the design principle of LiPON are summarized. Furthermore, the approaches to realize high‐efficient preparation of LiPON are analyzed, followed by the investigation of present application of LiPON in current batteries. Finally, remaining challenges associated with the fundamental understanding and rational prediction of structure and interface design, high efficient preparation, and potential opportunities for future application of LiPON are properly prospected.

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Predicting low-impedance interfaces for solid-state batteries

Cited by 13 publications

References 77 publications

Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V₂O₅/LiPON Interfaces

Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V₂O₅/LiPON Interfaces

Recent Developments and Research Avenues for Polymers in Electric Vehicles

Lithium Phosphorous Oxynitride as an Advanced Solid‐State Electrolyte to Boost High‐Energy Lithium Metal Battery

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Predicting low-impedance interfaces for solid-state batteries

Cited by 13 publications

References 77 publications

Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V2O5/LiPON Interfaces

Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V2O5/LiPON Interfaces

Recent Developments and Research Avenues for Polymers in Electric Vehicles

Lithium Phosphorous Oxynitride as an Advanced Solid‐State Electrolyte to Boost High‐Energy Lithium Metal Battery

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Product

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About

Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V₂O₅/LiPON Interfaces

Lithium Spatial Distribution and Split-Off Electronic Bands at Nanoscale V₂O₅/LiPON Interfaces