This Battery Capacity Decreases 1 Percent per 1,000 Times Charging

Harvard researchers John A. Paulson School of Engineering and Applied Sciences have developed a new flow battery that stores energy in organic molecules dissolved in water with a neutral pH. This allows the battery that has a non-toxic nature and nonkorosif with a very long life cycle and offers the potential to reduce production costs significantly.

Research published in ACS Letters Energy was led by professors in the field of materials technology and energy, a professor of chemistry and professor of materials science.


The broad outline, the flow batteries store energy in a liquid solution in the external tank. The bigger the tank, the more energy is saved.

In addition, the battery is claimed to be a storage solution that promises to renewable energy and intermittent like wind and solar, but battery types are for now still often experience a decrease in the energy storage capacity after many charging cycles, so that the electrolyte require regular maintenance so that capacity the back intact.

By modifying the structure of the molecules used in the electrolyte solution of positive and negative, and making them soluble in water, the research team was able to design a battery that only lost one percent of its original capacity for every thousand times the charging cycle.

"Lithium ion battery types can not even last up to a thousand times the charge," said Michael Aziz, one of the professors involved in the study, as quoted from the official statement.

"Because we are able to dissolve the electrolyte in neutral water, this is a long-life battery that you can place in your basement," said Roy Gordon, one of the other professors. "If spilled on the floor, the battery will not damage the concrete, and because the medium is nonkorosif, you can use less expensive materials to make the battery components, such as tanks and pumps."

Reduction of production costs is considered very important. US Department of Energy has set a target to design batteries that can store energy at a cost of less than US $ 100 for each KWH. This will make solar and wind energy becomes competitive with energy produced from traditional power sources.

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