Are solid-state batteries safer than lithium-ion batteries?

Bates, Alex; Preger, Yuliya; Torres-Castro, Loraine; Harrison, Katharine L.; Harris, Stephen J.; Hewson, John C.

doi:10.1016/j.joule.2022.02.007

Cited by 213 publications

(102 citation statements)

References 47 publications

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“…The replacement of volatile and flammable liquid electrolytes (LEs) used in conventional LIBs with nonflammable solid electrolytes (SEs) is almost universally expected to improve safety. In theory, SEs can enable Li-metal anodes to replace graphite anodes, increasing energy density compared with a conventional LIB With LE, Li metal is difficult to cycle efficiently and safely because it tends to deposit in mossy or dendritic microstructures that consume electrolyte and Li inventory [225]. However, this theory is not applicable to ceramic SEs, where grain boundaries offer growth pathways, and fracture is a critical failure mode.…”

Section: Discussionmentioning

confidence: 99%

Elucidating the charge-transfer and Li-ion-migration mechanisms in commercial lithium-ion batteries with advanced electron microscopy

Liu

Jiang

et al. 2022

Nano Research Energy

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Section: Discussionmentioning

confidence: 99%

Elucidating the charge-transfer and Li-ion-migration mechanisms in commercial lithium-ion batteries with advanced electron microscopy

Liu

Jiang

et al. 2022

Nano Research Energy

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“…Additionally, SEs can still be subject to safety issues, especially in abuse cases, and quantitative safety analysis of SEs is still necessary. [330,357] That being said, advanced HV battery systems based on SEs would revitalize the battery field, due to their safety, good stability, ecological impact, long cycles, and low cost.…”

Section: Ssesmentioning

confidence: 99%

Perspectives on Improving the Safety and Sustainability of High Voltage Lithium‐Ion Batteries Through the Electrolyte and Separator Region

Cavers

Molaiyan

Abdollahifar

et al. 2022

Advanced Energy Materials

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Lithium‐ion batteries (LIBs) are promising candidates within the context of the development of novel battery concepts with high energy densities. Batteries with high operating potentials or high voltage (HV) LIBs (>4.2 V vs Li+/Li) can provide high energy densities and are therefore attractive in high‐performance LIBs. However, a variety of challenges (including solid electrolyte interface (SEI), lithium plating, etc.) and related safety issues (such as gas formation or thermal runaway effects) must be solved for the practical, widespread application of HV‐LIBs. Most of these challenges arise in the region between the electrodes: the electrolyte region. This review provides an overview of recent development and progress on the electrolyte region, including liquid electrolytes, ionic liquids, gel polymer electrolytes, separators, and solid electrolytes for HV‐LIBs applications. A focus on improving the safety of these systems, with some perspectives on their relative cost and environmental impact, is given. Overall, the new information is encouraging for the development of HV‐LIBs, and this review serves as a guide for potential strategies to improve their safety, allowing the development of HV‐LIBs, including solid‐state batteries, to be accelerated to practical relevance.

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“…Therefore, ASSB is presumed safer than liquid-electrolyte LiB. Bates et al use thermodynamics models to show that solid-electrolyte batteries could not be safer under a short-circuit failure scenario . That is why assessing solid-electrolyte batteries safety is a major concern.…”

Section: Introductionmentioning

confidence: 99%

Safety Evaluation of All-Solid-State Batteries: An Innovative Methodology Using In Situ Synchrotron X-ray Radiography

Charbonnel

Darmet

Deilhes

et al. 2022

ACS Appl. Energy Mater.

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All-solid-state batteries (ASSBs) are expected to be a relevant solution to increase the energy density in lithium-ion battery (LiB) technology. However, the energy management requires high-energy storage capacities, which make the safety a crucial issue. Unfortunately, it is difficult so far to assess the safety of nonfully mature battery technologies. In this paper, we describe a methodology to study the thermal runaway of a wide range of ASSB technologies. We specifically designed a closed calorimeter to be used in operando experiments with high-speed synchrotron X-ray radiography for the validation of the principle. Electrodes removed from LiB at 100% state of charge have been reassembled in ASSB, with an LLZO (lithium lanthanum zirconium niobium oxide) electrolyte. For the first time, we were able to observe and compare the thermal runaway of ASSB and liquid electrolyte (LiB) using this methodology. An 11% decrease of heat release was measured in comparison with LiB during the thermal runaway. Such a methodology can assist in the development of future battery technologies, by evaluating battery safety from the start of the design to battery composition to cell shape.

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Are solid-state batteries safer than lithium-ion batteries?

Cited by 213 publications

References 47 publications

Elucidating the charge-transfer and Li-ion-migration mechanisms in commercial lithium-ion batteries with advanced electron microscopy

Elucidating the charge-transfer and Li-ion-migration mechanisms in commercial lithium-ion batteries with advanced electron microscopy

Perspectives on Improving the Safety and Sustainability of High Voltage Lithium‐Ion Batteries Through the Electrolyte and Separator Region

Safety Evaluation of All-Solid-State Batteries: An Innovative Methodology Using In Situ Synchrotron X-ray Radiography

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