Researchers in Australia have developed a polymer-based electrolyte material that significantly improves sodium metal battery design, This new design is intended to replace lithium ion batteries in applications such as electric vehicles and cell phones. Traditionally sodium batteries have provided less energy density and fewer charge/discharge cycles than lithium ion. Sodium batteries built with this …
Using pressurized CO2 (which changes to a liquid under pressure, even at ambient temperature) to store energy. The pressurized gas is used to run a turbine to recover the energy. The CO2 gas is recaptured in a domed building with a bladder inside, and is re-pressurized to complete the cycle and “recharge” the storage. They …
Scientists in Sweden have developed a specialized fluid, called a solar thermal fuel, that can store energy from the sun for well over a decade. The article and paper are from 2018. It’s not clear where this has gone since then. Article Paper
Stores energy by super-cooling air and storing it in liquid form in large tanks. The energy is recovered by converting the liquid air back into a gas and using it to run a turbine. Website
Radiovoltaic technology that recycles nuclear waste to create long-life batteries. Micropower only. Website
Iron-air batteries are big and heavy, but relatively cheap per kilowatt-hour. Good for grid storage.Can discharge over a much longer timeframe than lithium-ion. A one megawatt system capable of 100-hour discharge time requires about one acre of land. They also offer a “grid modeling toolkit” which is software to model power grids. Website
Gravity energy storage. Website
Solid state lithium ion battery development. Currently working with Volkswagen. Website
Solid-state lithium ion battery development. Currently working with BMW and Ford. Can be manufactured using machinery and processes currently used for standard lithium ion batteries. Website
Self-charging batteries using nuclear waste. Website