Researchers create "proton" batteries to replace expensive lithium with cheap carbon
Researchers at RMIT University have created the world's first rechargeable "proton" battery. It is characterized by replacing expensive and scarce lithium materials with cheap carbon and water. Engadget explained that this battery is essentially a "mixture" of hydrogen fuel cells and chemical batteries. When charging, the water will be separated to produce protons, which will then pass through the cell membrane and combine with the carbon electrode. Crucially, this process is done without producing hydrogen.
When it is necessary to release stored energy, hydrogen atoms are released and revert back to an electron form - electrons can provide energy, and (hydrogen) protons can combine with oxygen (and another electrode) to generate water.
In fact, not producing hydrogen is the most eye-catching part of this technological breakthrough! Traditional fuel cells must produce hydrogen and then break it down into protons, but this process will reduce the overall efficiency.
The new technology allows Proton batteries not to generate hydrogen, so it is more efficient.
Professor John Andrews, the project's chief researcher, said that the technology is expected to be commercially available within 5 to 10 years. By then, it could become the basis of Powerhouse's home energy storage system, even as a backup for solar/wind energy.
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