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Salt batteries are a class of battery that uses molten salts as an electrolyte and offers both a high energy density and a high power density.

Aquion Energy manufactures batteries that are safe, reliable, sustainable, and cost-effective. The batteries are based on Aqueous Hybrid Ion (AHI™) chemistry which has a unique environmentally-friendly electrochemical design, and they are the first and only batteries in the world to be Cradle to Cradle Certified™.

These batteries contain no heavy metals or toxic chemicals and are non-flammable and non-explosive, making them the safest batteries in the world – designed for use in pristine environments, island locations, homes and businesses.

Chemistry is composed of a saltwater electrolyte, manganese oxide cathode, carbon titanium phosphate composite anode, and synthetic cotton separator. The battery utilizes non-corrosive intercalation reactions at the anode and cathode

These batteries contain no heavy metals or toxic chemicals and are non-flammable and non-explosive, making them the safest batteries in the world – designed for use in pristine environments, island locations, homes and businesses.

Chemistry is composed of a saltwater electrolyte, manganese oxide cathode, carbon titanium phosphate composite anode, and synthetic cotton separator. The battery utilizes non-corrosive intercalation reactions at the anode and cathode.

Benefits and Features

Safe
Aquion’s batteries are not flammable, corrosive, or explosive under any conditions, states of charge, or use conditions (with the exception of a severe overcharge leading to gas evolution, a situation that is not possible during transport).

Batteries have a safe water-based electrolyte, as compared to the flammable organic solvent in lithium ion batteries and caustic sulfuric acid in lead acid batteries.

This water-based system moderates the maximum temperature that the battery can reach – it is impossible for any internal reactions to drive the battery above 100°C, since at this temperature, all of the water will evaporate leading to an open circuit condition.

Thermal runaway events are simply not possible in the AHI chemistry for the reasons described above as well as the fact that lithium metal, dendrites, and SEI layers cannot form because they are all water soluble species and cannot build on the electrode surface and lead to short circuits.

Sustainable
Batteries have an environmentally-friendly electrochemical design that contains no heavy metals, toxic chemicals, inorganic solvents, or other noxious materials.

Batteries rely on no heavy or toxic metals, such as lead, or caustic materials such as sulfuric acid or lithium hexafluorophosphate.
Batteries are safe enough to be disposed via traditional waste streams (always follow local regulations regarding disposal of any product).

Simple
The deep cycle batteries are completely sealed and do not require maintenance. They are self-balancing and therefore do not require an equalizing charge or a battery management system (BMS).

Batteries have no moving parts like flow batteries, complicated watering systems like some lead acid batteries, and do not require active cell balancing like lithium ion systems.

The aqueous electrolyte provides natural overcharge and overdischarge protection and, along with the high impedance of the system, allows batteries to self balance in string configurations.

Resilient
Batteries are tolerant to daily deep cycling, wide temperature ranges, and partial state of charge cycling with minimal degradation.

In addition to the safety and sustainability advantages of using water as electrolyte, another advantage is the thermal mass of the embodied water means that products neither heat nor cool rapidly. As such, the products can operate in a very wide operating temperature window because they simply take so long to heat and to cool.

The chemistry relies on charge/discharge mechanisms which are unaffected by partial state of charge – these batteries can sit indefinitely at partial, or even no state of charge, without irreversible capacity loss like lead acid batteries.