公开(公告)号：US20240274812A1

公开(公告)日：2024-08-15

申请号：US18441249

申请日：2024-02-14

Applicant: Worcester Polytechnic Institute

Inventor： Xiaowei Teng ,  Sathya N. Jagadeesan

IPC: H01M4/52 ,  H01M4/02 ,  H01M10/26 ,  H01M12/08

CPC classification number: H01M4/52 ,  H01M10/26 ,  H01M12/08 ,  H01M2004/021 ,  H01M2004/027

Abstract: An iron anode employs an electrolyte for generating an anode reaction to convert between Iron II and Iron III ions, denoted by Fe(OH)2 and FeOOH, rather than tending towards formation of highly stable Fe3O4, which can tend to cause “dead” regions in the battery. A suitable battery chemistry includes iron-air and other iron metal batteries operable with an aqueous electrolyte and employing oxygen and water cathodes. The iron anode battery employs inexpensive available iron, rather than more expensive and/or volatile materials used in Li-ion and lead-acid batteries. An aqueous electrolyte formed from sodium hydroxide and silicates, optionally with potassium or chloride salts, forms an anode reaction with nanostructured iron oxide particles in a safe and stable battery chemistry which is readily scalable for grid storage.