China energy storage net news: American scientists have in journal of the American chemical society, energy communications, the report says, they developed a new type of fluid flow battery, can be dissolved in neutral ph organic molecules to store electrical energy in the water.
The results make it possible to make batteries that are non-toxic, non-corrosive and use long life, and are expected to significantly lower production costs.
The storage system of liquid - flow battery generally contains two reservoirs of positive and negative, with two different electrolytes.
The connection between this is a power generation area separated by a diaphragm.
Two electrolytes are separated by a thin film to generate an ion exchange for the storage and release of electrical energy.
The larger the tank, the more power is stored.
Flow battery for power generation such as wind power and solar energy and the output uncertain discrete provide a solution to the storage of renewable energy, but the existing flow battery storage capacity will decline after repeatedly charging and discharging cycle, need regular maintenance electrolyte.
Researchers at Harvard University by respectively adjusting the molecular structure of the cathode electrolyte, so they can dissolve in water, thus developed a 1000 per charge and discharge time lost only 1% storage capacity of the battery, and lithium ion battery is in commonly 1000 times after the charge and discharge will not be able to use.
The neutral ph can also significantly reduce the manufacturing cost of the diaphragm separating the positive and negative cells of the battery.
Because most of the current membranes of liquid-current cells use expensive polymers to withstand corrosive substances in batteries, they account for a third of the cost of the entire battery.
And the membrane on both sides of the new liquid-flow battery is actually just brine, so its material can be made of cheap hydrocarbons, which can greatly reduce the cost.
Because electrolytes are dissolved in neutral ph water and are non-toxic and non-corrosive, people can use cheaper materials to make battery components such as storage tanks and pumps.
Reducing costs is critical to power storage.
The U.S. department of energy has set up a goal to develop a battery that can reduce storage costs per kilowatt hour to less than $100.
If that happens, the new energy, such as wind and solar energy, will be comparable to conventional electricity.
So energy storage is the key to a new era of energy.
Research director at the U.S. department of energy power office energy storage imran ray for a long time, think the study is very important, it is expected to indicate the direction for future batteries, significantly improve the battery life and reduce cost, this kind of high efficient and durable flow battery is expected to become a standard component of grid infrastructure.
With the help of the harvard technical development office, researchers are currently working with several companies to prepare the technology for industrial applications.
Harvard University has filed a report to patent the improved technology for the fluid cell.