3D magnesium battery and method of making the same

US11777135B2 · kind B2 · utility

Assignees

• TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC. · US
• TOYOTA JIDOSHA KABUSHIKI KAISHA · JP

Inventors

• Fuminori Mizuno · Ann Arbor, US
• Rana Mohtadi · Northville, US
• Oscar Tutusaus · Ann Arbor, US
• Nikhilendra Singh · Ypsilanti, US
• Timothy S. Arthur · Ann Arbor, US
• Ruidong Yang · Tokyo, JP
• Kensuke Takechi · Ann Arbor, US
• Chen Ling · Sunnyvale, US
• Ruigang Zhang · Qingdao, CN

Key dates

• Filing date: May 14, 2020
• Grant date: Oct 3, 2023
• Expiry date: Oct 25, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

3-D magnesium voltaic cells have a magnesium anode coated on multiple opposing surfaces with a continuous protective/electrolyte layer that is ionically conductive and electronically insulating. The resulting protected 3-D magnesium anode is coated on multiple opposing surfaces with a continuous cathode layer that is electronically and ionically conductive, and includes a magnesium storage medium. Suitable magnesium anodes, in particular, magnesium foam anodes, can be made by pulsed galvanostatic deposition of magnesium on a copper substrate. The protective layer can be formed by electropolymerization of a suitable methylacrylate ester. The continuous cathode layer can be a slurry cathode having powders of an electronic conductor and a reversible magnesium storage component suspended in a magnesium electrolyte solution.