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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Controlling Cell Components to Design High-Voltage All-Solid-State Lithium-Ion Batteries.

Anirudha Jena1,2,3, Behrouz Bazri1,2, Zizheng Tong1

  • 1Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan.

Chemsuschem
|January 12, 2023
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Summary

High-voltage all-solid-state batteries utilize advanced cathodes and solid electrolytes to increase energy density. Optimizing components minimizes impedance and dendrite formation for safer, more powerful energy storage.

Keywords:
electrochemistryenergy conversioninterfaceslithium-ion batteriessolid-state structures

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • All-solid-state batteries (ASSBs) offer enhanced safety and energy density compared to conventional lithium-ion batteries.
  • The use of solid ionic conductors between solid electrode films in ASSBs eliminates dead space, enabling higher voltage packs.
  • High-voltage cathode materials are crucial for achieving superior energy storage performance.

Purpose of the Study:

  • This review focuses on high-voltage cathode materials with redox peaks beyond 4.7 V.
  • It examines solid electrolytes compatible with these high-voltage cathodes, including halide- and sulfide-based systems.
  • The review discusses strategies to optimize cell components for improved performance and safety.

Main Methods:

  • Review of current literature on high-voltage cathode materials, particularly Li-Ni-Mn-O systems.
  • Analysis of compatible solid electrolytes (halide- and sulfide-based) for high-voltage applications.
  • Discussion of electrode-electrolyte compatibility at extended potentials and anode thickness control.

Main Results:

  • Li-Ni-Mn-O systems show promise as cathode materials for high-voltage cells.
  • Compatibility challenges between electrodes and electrolytes at high potentials are identified.
  • Anode thickness control is critical for mitigating solid-electrolyte interphase formation and dendrite growth.

Conclusions:

  • Optimizing cell components is essential to minimize electrode-electrolyte impedance and enhance ion transport.
  • Further research into high-voltage cathode materials and compatible solid electrolytes is needed.
  • Advancements in ASSBs are key to developing next-generation energy storage solutions.