Advantages

• Earth-abundant elements (aluminum: 8.1% in the Earth's crust)

• The high energy density (aluminum: 2982 mAh/g)

• Potentially low cost (aluminum: 2.5 USD/kg)

• Non-flammable (ionic liquid: salt in the liquid state)

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Applications

• Backup power supply

• Grid energy storage

• Electric car

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Achievements

• Electrochemical cells

  • Aluminum//Graphitic foam cell (working voltage: 2.0 V)(Nature 2015)

  • Aluminum//Sulfur cell (working voltage: 1.8 V)(ChemElectroChem 2018)(ChemSusChem 2022)

  • Aluminum//MWCNT cell (working voltage: 2.0 V)         (Journal of Power Sources 2020)

  • Graphite//Graphite cell (working voltage: 3.7 V)           (Journal of Power Sources 2019)

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• Materials

  • Low-cost graphitic foam (Advanced Materials 2016)

  • Additives for overcharge protection (Electrochimica Acta 2020)

  • Gel polymer electrolyte (Journal of Power Sources 2021)

  • Semi-solid electrolyte (Materials Chemistry and Physics 2022)

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• Fundamentals

  • Mechanism of bulky imidazolium cation storage (Journal of Materials Chemistry A 2021)

  • Aqueous aluminum cells: mechanisms of aluminum anode reactions (ACS Applied Materials & Interfaces 2021)

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• Recycling

  • Sustainable recycling of spent ionic liquid dual‐ion batteries (Energy Technology 2022)