Aqueous Aluminum-Carbon Rechargeable Batteries

Jasmin Smajic, Bashir E. Hasanov, Amira Alazmi, Abdul-Hamid M. Emwas, Nimer Wehbe, Alessandro Genovese, Abdulrahman El Labban, Pedro M. F. J. Da Costa

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Carbon cathodes have shown excellent electrochemical behavior in aluminum batteries based on non-aqueous electrolytes. By contrast, their use in Al systems operating in a salt-water medium is plagued by poor and unstable performance. Herein, it is sustained that a successful C cathode for rechargeable aqueous Al batteries requires surface customization to enable hydrophilicity and grafting of charged Al molecules. Employing a freeze-dried reduced graphene oxide (rGO) as the active electrode material, an aqueous Al-C battery is assembled with a high energy density (136 Wh kg−1 per cathode mass) and one of the best capacity retentions reported (≈60% across a range of current densities and constant Coulombic efficiencies close to unit). Furthermore, the rGO cathode more than doubles the benchmark for life cycles (to ≈200 cycles) and can be charged rapidly (
Original languageEnglish (US)
Pages (from-to)2101733
JournalAdvanced Materials Interfaces
DOIs
StatePublished - Dec 31 2021

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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