Researchers from the National University of Singapore’s Nanoscience and Nanotechnology Initiative (NUSNNI) have created what they claim is the world’s first energy-storage membrane. Not only is the material soft and foldable, but it doesn’t incorporate liquid electrolytes that can spill out if it’s damaged, it’s more cost-effective than capacitors or traditional batteries, and it’s reportedly capable of storing more energy.
The membrane is made from a polystyrene-based polymer, which is sandwiched between two metal plates. When charged by those plates, it can store the energy at a rate of 2 farads per square centimeter – standard capacitors, by contrast, can typically only manage an upper limit of 1 microfarad per square centimeter.
Due in part to the membrane’s low fabrication costs, the cost of storing energy in it reportedly works out to 72 cents per farad. According to the researchers, the cost for standard liquid electrolyte-based batteries is more like $7 per farad. This in turn translates to an energy cost of 2.5 watt-hours per dollar for lithium-ion batteries, whereas the membrane comes in at 10-20 watt-hours per dollar.
No details, yet. But, the quest fits into the range of energy and cost saving topics near and dear to us all – so, I’m posting this brief note from the UK.
Keep your eyes open for more on this from Dr. Xie Xian Ning in Singapore. He calls this a supercapacitor.