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High-Performance Hydrogen-Aided Sn-Air Battery.

Bingzi Feng1,2, Ruotong Ma1,2, Xiaolin Ge3

  • 1State Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|May 7, 2026
PubMed
Summary
This summary is machine-generated.

A new hydrogen-aided tin-air battery (Sn-HAB) significantly improves energy storage by replacing slow oxygen reactions with efficient hydrogen reactions. This innovation leads to lower charging voltage and extended cycle life for safer, cost-effective batteries.

Keywords:
Sn‐Air batteryanode‐freeaqueousfast kineticshydrogen aid

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Storage

Background:

  • Aqueous tin-air batteries (SnABs) offer high theoretical energy density and safety.
  • Commercialization is hindered by high charging overpotential and short cycle life due to sluggish oxygen evolution reaction (OER) kinetics.

Purpose of the Study:

  • To develop a hydrogen-aided Sn-air battery (Sn-HAB) that overcomes the limitations of conventional SnABs.
  • To enhance charging efficiency and cycle life through modified cathode reactions and tin deposition control.

Main Methods:

  • Replaced the sluggish OER with an efficient hydrogen oxidation reaction (HOR) at the cathode during charging.
  • Introduced a tinophilic brass mesh (BM) substrate to regulate tin deposition, ensuring a dense and dendrite-free morphology.
  • Tested the Sn-HAB across a wide current density range (0-1000 mA cm⁻²).

Main Results:

  • Achieved a significantly reduced charging voltage of 1.0 V compared to 2.5 V for SnABs at 100 mA cm⁻².
  • Demonstrated a cycle life exceeding 900 cycles, nearly 20 times longer than conventional SnABs.
  • An anode-free configuration maintained stable operation for over 800 cycles, showcasing scalability.

Conclusions:

  • The Sn-HAB design effectively overcomes the rate and efficiency limitations of traditional SnABs.
  • This approach establishes a viable pathway for developing safe and low-cost aqueous energy storage systems.
  • The use of a brass mesh substrate for controlled tin deposition is key to improved battery performance.