Mechanical instability of electrode-electrolyte interfaces in solid-state batteries

Bucci, Giovanna; Talamini, Brandon; Balakrishna, Ananya Renuka; Chiang, Yet‐Ming; Carter, W. Craig

doi:10.1103/physrevmaterials.2.105407

Cited by 80 publications

(76 citation statements)

References 35 publications

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“…Furthermore, even glass solid electrolytes with no grain boundaries suffer from dendrite penetration [32][33][34][35][36]. Similarly, dendrite suppression with soft separators under an external load [16] would also seem to violate its predictions.…”

Section: Introductionmentioning

confidence: 99%

Rethinking How External Pressure Can Suppress Dendrites in Lithium Metal Batteries

Zhang

Wang

Harrison

et al. 2019

J. Electrochem. Soc.

134

115

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Lithium metal anodes are critical enablers for high energy density next generation batteries, but they suffer from poor morphology control and parasitic reactions. Recent experiments have shown that an external packing force on Li metal batteries with liquid electrolytes extends their lifetimes by inhibiting the growth of dendritic structures during Li deposition. However, the mechanisms by which pressure affects dendrite formation and growth have not been fully elucidated. For

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Section: Introductionmentioning

confidence: 99%

Rethinking How External Pressure Can Suppress Dendrites in Lithium Metal Batteries

Zhang

Wang

Harrison

et al. 2019

J. Electrochem. Soc.

134

115

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“…To study the interfacial instability between electrode particles and solid-state electrolytes, Bucci et al developed an analytical model that analyzes the delamination of such particles from the surrounding SSE. [294] Moreover, these authors derived a stability condition for fracture propagation within the electrode particles. Thermodynamically consistent electro-chemo-mechanical models that can simulate the dynamic response of an all-solid-state battery have also been developed, [127] showing that due to electric field build-up at the electrode-electrolyte interface, Space charge layers (SCLs) are subjected to considerable stresses.…”

Section: Continuum Modelsmentioning

confidence: 99%

Rechargeable Battery Electrolytes Capable of Operating over Wide Temperature Windows and Delivering High Safety

Lin

Zhou

Liu

et al. 2020

Advanced Energy Materials

105

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self-discharge rates. [1-3] LIBs permeate nearly every aspect of human life. They are widely used in portable electronics (e.g., smartphones, smart-watches, and laptops), transportation (e.g., electric and hybrid vehicles), and biomedical applications (e.g., cardiac pacemakers and cochlear implants). In light of these achievements, J.B. Goodenough, M.S. Whittingham, and A. Yoshino won the 2019 Nobel prize in chemistry. [4] Despite the considerable success of conventional LIBs, their operational regime is typically around room temperature (RT). Operating at low (<0 °C) or high (>60 °C) temperatures usually deteriorate the performance and leads to safety risks. [5] We should also note that commercial LIBs are highly hazardous as they can ignite and explode in case of an accident, overheating, and overcharging, requiring more stringent safety standards, e.g., wide temperature operability and nonflammability. For example, electric vehicles require battery systems that can deliver a stable performance while maintaining a high energy density even in extreme climates, such as cold mountainous areas, where the temperatures can be as low as −40 °C, and hot deserts, where equipment exposed to sunlight can reach temperatures exceeding 70 °C. [6] Moreover, task-specific applications call for reliable energy storage solutions at extreme temperatures, including subsurface exploration (such as for mineral, oil, and gas), aerospace engineering, safety and rescue, and sterilizable medical devices. [2] Conventional LIBs are composed of a positive electrode or cathode (e.g., LiFePO 4 (LFP), LiNi x Mn y Co z O 2 (x + y + z = 1, NMC) and LiCoO 2 (LCO)), an electrolyte (including solvents, Li salts, and additives), a separator (typically a polyolefin membrane), and a negative electrode or anode (e.g., graphite and Li 4 Ti 5 O 12 (LTO)). Generally, the electrode materials are nonflammable and thermal stable (>300 °C). While the polyolefin membrane will melt/shrink over 120 °C, the commercial separators composited with ceramic nanoparticle (e.g., SiO 2 and Al 2 O 3) have been developed to reduce thermal shrinkage when exposed to overheating. [7,8] Therefore, the major challenge of commercial LIBs at extreme operating temperatures comes to the electrolyte. Carbonates are commonly used as solvents for conventional LIB electrolytes. However, these compounds are Li-ion batteries (LIBs) are the energy storage systems of choice for portable electronics and electric vehicles. Due to the growing deployment of energy storage solutions, LIBs are increasingly required to function safely and steadily over a broad range of operational conditions. However, the conventional electrolytes used in LIBs will malfunction when the temperatures fall below zero or elevate above 60 °C. Further, conventional electrolytes are toxic and flammable, leading to severe safety risks, especially in the case of an accident or overheating. Therefore, an ever-growing body of research has been dedicated to the development of electrolytes characterized by high ionic conduct...

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“…Handling of micrometer‐thick sheets becomes very difficult, and the interface of these materials with a lithium‐metal anode is subject to spatial detachment. [ 70 ] The manufacturing processes for oxides involve a high‐temperature sintering process, which is costly but yields an inert sample. [ 64 ] The sulfides, on the contrary, are much softer and have a sufficient ionic conductivity (>1 mS cm −1 ) [ 71 ] even when cold‐pressed.…”

Section: Introductionmentioning

confidence: 99%

Between Liquid and All Solid: A Prospect on Electrolyte Future in Lithium‐Ion Batteries for Electric Vehicles

Horowitz

Schmidt

Yoon³

et al. 2020

Energy Tech

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Herein, three electrolyte families (liquid, polymer, and ceramic) are compared and their future perspectives in research and application are discussed. First, the transport mechanism for each family is presented, as their beneficial and taxing properties stem from the differences in these mechanisms. Following a discussion of each group, their advantages, and limitations, a clear conclusion can be drawn on the need to focus on research on solid electrolytes, which present brighter prospects in terms of significant future advances in lithium‐based battery systems. Yet, in a more realistic perspective based on current work by companies such as Samsung, Solid Power, and QuantumScape, it is our understanding that the hybridization of polymer and solid electrolytes will likely dominate practical electrolyte chemistries, at least in the near future, given that the synergetic properties of the two families are larger than their single parts. Inevitably, solid‐state electrolytes will dominate, mainly in electric vehicles and future lithium battery chemistries.

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Mechanical instability of electrode-electrolyte interfaces in solid-state batteries

Cited by 80 publications

References 35 publications

Rethinking How External Pressure Can Suppress Dendrites in Lithium Metal Batteries

Rethinking How External Pressure Can Suppress Dendrites in Lithium Metal Batteries

Rechargeable Battery Electrolytes Capable of Operating over Wide Temperature Windows and Delivering High Safety

Between Liquid and All Solid: A Prospect on Electrolyte Future in Lithium‐Ion Batteries for Electric Vehicles

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