article · Hybrid Advances
Solid-state lithium-ion batteries present an alternative to traditional batteries that rely on liquid electrolytes. Conventional liquid electrolyte batteries encounter operational challenges regarding flammability, leakage, thermal instability, narrow electrochemical stability windows, and environmental concerns. Replacing liquid electrolytes with solid-state alternatives resolves these hazards whilst delivering higher ionic conductivities and greater electrochemical stability. Multiple solid electrolyte material classes exist, including oxide, sulfide, perovskite, anti-perovskite, NASICON, and LISICON compositions, each displaying specific structural and electrochemical characteristics that influence lithium-ion mobility and overall cell operation. Realising the capabilities of these systems also involves interfacial engineering, the optimisation of anode and cathode materials, and refined manufacturing approaches. Together, these developments support improved energy storage across demanding sectors such as electric transportation and grid-scale power reserves.
Modern rechargeable batteries face inherent safety and performance trade-offs caused by volatile liquid components. Solid-state electrolytes resolve these issues by preventing fires and leakage while supporting higher energy densities. Developing robust solid electrolyte systems offers a route toward safer, more resilient energy storage for everyday technologies, helping to power cleaner transport networks and stabilising electricity grids through durable large-scale storage.
The technology targets industrial deployment in electric vehicles and large-scale grid energy storage systems requiring superior safety and high energy density. Battery manufacturers and automotive developers represent the primary end users. Because this work examines broad material categories, interfacial engineering, and manufacturing methods without detailing a finalised commercial cell, the technology represents early-stage to intermediate applied research progressing toward production processes.
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Solid-state lithium-ion batteries (SSLIBs) are poised to revolutionize energy storage, offering substantial improvements in energy density, safety, and environmental sustainability. This review provides an in-depth examination of solid-state electrolytes (SSEs), a critical component enabling SSLIBs to surpass the limitations of traditional lithium-ion batteries (LIBs) with liquid electrolytes. Conventional LIBs face significant challenges such as thermal instability, flammability, leakage, limited electrochemical windows, and environmental concerns. SSLIBs, however, eliminate these risks by utilizing solid electrolytes, which exhibit higher ionic conductivities, increased electrochemical stability, and reduced safety hazards. This review explores a variety of solid electrolytes, including oxide, sulfide, perovskite, anti-perovskite, NASICON, and LISICON-based materials, each with unique structural and electrochemical properties that enhance lithium-ion mobility and battery performance. Additionally, advancements in interfacial engineering, cathode and anode material optimization, and manufacturing techniques are discussed. The potential of SSLIBs in transforming applications across industries—from electric vehicles to large-scale energy storage systems—is underscored, highlighting the path toward more efficient, safer, and sustainable battery technologies.
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DOI: 10.1016/j.hybadv.2024.100339
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