Researchers at the Massachusetts Institute of Technology (MIT) developed a lightweight, inexpensive alternative to existing batteries for electric vehicles and the power grid. The new battery relies on an architecture called a semi-solid flow cell, in which solid particles are suspended in a carrier liquid and pumped through the system. The technology could make "refueling" as quick and easy as pumping gas into a conventional car.

The new battery relies on an innovative architecture called a semi-solid flow cell, in which solid particles are suspended in a carrier liquid and pumped through the system. In this design, the battery’s active components — the positive and negative electrodes, or cathodes and anodes — are composed of particles suspended in a liquid electrolyte. These two different suspensions are pumped through systems separated by a filter, such as a thin porous membrane.

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