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Anode-Free Batteries: Pioneering Energy Storage Revolution.

Yosef Nikodimos1,2, Kassie Nigus Shitaw1,2, Teklay Mezgebe Hagos1,2

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Anode-free batteries (AFBs) eliminate anodes for higher energy density and safety. This review covers AFB mechanisms, challenges, and diverse metal systems, guiding future advancements in energy storage.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Anode-free batteries (AFBs) offer enhanced energy density and safety by omitting the anode.
  • Fundamental processes like metal plating/stripping and electrolyte decomposition are critical to AFB operation.

Purpose of the Study:

  • To provide a comprehensive review of anode-free battery technologies.
  • To analyze challenges, innovative strategies, and performance-influencing parameters in AFBs.
  • To explore the potential of AFBs for fundamental interfacial studies.

Main Methods:

  • Literature review and analysis of fundamental phenomena in AFBs.
  • Examination of metal plating and stripping mechanisms (nucleation, growth, dendrites, dead metal).
  • Analysis of electrolyte decomposition, morphological evolution, and interfacial phenomena.

Main Results:

  • AFBs demonstrate significant improvements in energy density, safety, and manufacturing simplicity.
  • Diverse metal systems (S, Na, K, Zn, Mg, Al) and all-solid-state AFBs present unique challenges and solutions.
  • Coulombic efficiency, electrolyte ratio, and cycling protocols are key performance determinants.

Conclusions:

  • AFBs are a pivotal technology for next-generation energy storage.
  • Further research is needed to address limitations and accelerate practical deployment.
  • AFBs serve as a valuable platform for understanding interfacial phenomena in batteries.