New fluid battery technology has great potential

According to foreign media reports, at present, researchers at the Massachusetts Institute of Technology (MIT) in the United States have recently designed a new type of rechargeable fluid battery that does not rely on costly diaphragms to generate and store electrical energy. This kind of fluid battery is expected to be cheaper and more expensive in the future. Scale energy storage.

The prototype of the fluid cell generates 3 times more energy per square centimeter than other spacer membrane systems, and its power density is orders of magnitude higher than most lithium ion batteries and other commercial and experimental energy storage systems. The device's storage and release of energy is dependent on a phenomenon called laminar flow, where both liquids are pumped through a channel, and the electrochemical reactions between the two electrodes store or release energy. Where appropriate, this solution emerged through the channel stream and the two liquids were mixed slightly. The fluid naturally separates liquids without the use of costly battery spacers.

The reaction material contained in the battery contained liquid bromine solution and hydrogen fuel. The research team chose bromine because the chemical is quite cheap and easy to purchase. The United States can produce 243,000 tons of bromine annually. In addition to the lower cost of bromine, the chemical reaction between hydrogen and bromine has a great advantage for storing energy, but hydrogen and bromine-based fuel cell designs will appear as follows: Hydrobromic acid tends to devour the battery's spacer film, effective Slows energy storage reactions and reduces battery life.

In order to avoid these problems, the research team took a simple method - remove the battery spacer. Cullen Buie, an associate professor of mechanical engineering at the Massachusetts Institute of Technology in the United States, said: "This technology has good prospects for the development of electrical energy storage."

Karen and colleagues of the research team published this latest research report in the journal Nature Communications, published last week. Professor Martin Bazant, a member of the research team, said: “The latest battery system performance we research is excellent. In the previous battery design, we do not need to worry about the problem of spacer film. This is a huge breakthrough in energy storage technology."

This technology will potentially be applied to solar and wind energy storage, and low-cost energy storage will potentially promote the worldwide use of renewable energy sources such as solar and wind energy.