Aqueous Batteries with Ultimate Safety


Using water as the electrolyte, these batteries are completely safe and free from any risk of fire or explosion, even after physical damage, penetration or compression or fire exposure.

  • Aqueous Batteries with Ultimate Safety 0
  • Aqueous Batteries with Ultimate Safety 1
  • Aqueous Batteries with Ultimate Safety 2
Research completion
Commercialisation opportunities
Technology licensing agreement
Problem addressed

The biggest demand for batteries in the field of stationary energy storage is ultimate safety. Aqueous batteries have the characteristics of principle safety and lower cost. Through technological improvement, the current battery cycle is catching up with lithium batteries, so the use of aqueous batteries in the field of energy storage is a very promising technology.

  • The current energy density of aqueous batteries can reach 200-300Wh/L, close to lithium iron phosphate based lithium ion batteries.
  • The maximum battery capacity can reach more than 10Ah for cylindrical and 50Ah for prismatic cells, and about 5KWh for battery modules.
  • N/A
Key impact
  • Extreme safety
  • Highly environmentally friendly
  • Low cost
  • Easy to disassemble and recycle, and the recycling process is pollution-free
  • 48th International Exhibition of Inventions Geneva (IEIG) - Gold Medal
  • Two-wheeled electric vehicles
  • Logistics vehicles
  • Energy storage base stations
  • Energy storage in oil mines


  • Patent Granted: US10,957,939 IDF 574
  • Patent Granted: US11,177,504 IDF 557
  • Patent Granted: US11,075,406 IDF 602
  • Patent Granted: US10,872,736 IDF 623
  • Patent Granted: US11,329,574 IDF 619
City University of Hong Kong (CityU)

As one of the fastest growing universities in the world over the past decade, City University of Hong Kong (CityU) is recognised as a hub for innovation in research and professional education. CityU identifies solutions to critical global challenges by extending the frontiers of knowledge both within and beyond existing research paradigms.

The University’s highly qualified academics are drawn from all over the world, not only bringing a wealth of research and professional experience to the teaching programmes, but also contributing to the knowledge and technology advancement.