A rechargeable battery is a very important electronic device because it can store sustainable renewable electricity such as wind, solar, hydrogen, fuel cells, geothermal energy, wave energy, biomass power generation, etc. Therefore, it is necessary to develop a rechargeable battery that is more stable and less expensive than currently used lithium-ion batteries.
GreenScienceAlliance is developing a variety of new-generation rechargeable battery technologies such as lithium-sulfur batteries, lithium-rich anode batteries, silicon anode batteries, and all-solid-state lithium-ion batteries. In addition, they have also developed rechargeable aluminum-air batteries in the past. However, due to its complex structure, the aluminum reduction reaction between aluminum ions and metal aluminum in the electrolyte is unstable, and it is difficult to achieve commercialization.
This time, Dr. Ryohei Mori and Mr. Hiromichi Itani developed a real aluminum-sulfur pouch battery using aluminum anode, ionic liquid or deep eutectic solvent-based electrolyte and carbon-sulfur composite cathode. The battery capacity was about 950 mAhg-1 at the beginning, but dropped to 200 mAhg-1 after 100 cycles at room temperature of 25 °C. Therefore, the cyclability needs to be improved. In addition, the battery voltage and applied current are lower than lithium-ion batteries. The open circuit voltage of the prepared aluminum-sulfur pouch battery is about 0.9V. Even so, the battery capacity is much larger than Lithium, especially in the beginning. And, aluminum-sulfur batteries can be safer and cheaper than lithium-ion batteries.
Some scientific research institutions and universities have carried out some research activities on aluminum-ion batteries (theoretical capacity is smaller than that of aluminum-sulfur batteries) and aluminum-sulfur batteries. However, this is the first real commercial aluminum-sulfur battery developed in the world.
The Green Science Alliance has been developing lithium-sulfur batteries so they can understand sulfur-based cathodes. This time, they applied that knowledge well to aluminum-sulfur batteries. In addition to this, the Green Science Alliance synthesizes and prepares most of the practically used electrode and electrolyte materials in-house at their companies, which is a big advantage in creating cutting-edge batteries since battery performance is largely dependent on battery component materials.
However, the application of aluminum-sulfur batteries in electric vehicles (EVs) is difficult to see the possibility of practice in the early stage because it cannot withstand large currents at a time. However, aluminum-sulfur batteries can work for a long time. This is why the total capacity of the battery is much larger than that of Li-ion batteries. Nonetheless, potential applications in sensors or IT could be a huge business opportunity, as these industries do not require high currents but require long-term power supply.
The advantages of aluminum-sulfur battery include: its theoretical capacity is 1675wh/Kg (calculated in terms of sulfur content), which is 7-8 times that of lithium-ion battery 200-243Wh/Kg. Relative to lithium, which has high price risk and scarcity, aluminum is a natural element with huge reserves and abundant resources, and is the most recycled metal on the planet. Therefore, aluminum-based rechargeable batteries will be cheaper. Lithium-ion batteries are flammable and can be dangerous. In contrast, the aluminum-sulfur battery is chemically stable, non-toxic, and non-flammable, and all battery components including it are relatively safe. Since ionic liquids or deep eutectic solvents are used as electrolytes, the fabricated aluminum-sulfur batteries can be used at a high temperature of 300 degrees Celsius. Developers will continue to improve battery capacity and cycle performance and begin sending samples to partner companies and investors.
Manly Battery Co.,Ltd specializes in providing energy storage power, UPS backup power, power supply and new energy system solutions and operation and maintenance services for new energy, electric wheels, smart energy storage and green power applications. Among them, the field of network energy mainly includes communications, power, data centers, financial securities, rail transit, etc.; the field of smart energy storage mainly includes household energy storage, industrial and commercial energy storage, and microgrid energy storage systems; the field of green power mainly includes forklifts, low-speed electric vehicles, off-road vehicles, etc. At present, the main products are lithium-ion batteries and systems, lead-acid battery replacement lithium batteries and systems, and new energy system integration products and services. Please contact:
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