Lithium-Air Revolution: Japanese Scientists Create Prototype Comparable to Gasoline

Japanese researchers at the National Institute for Materials Science (NIMS) have announced a major milestone in the development of lithium-air batteries – a technology that theoretically could provide electric vehicles with a range comparable to gasoline-powered cars. The key breakthrough came with a new type of carbon membrane that controls the interaction between oxygen and lithium.
The main challenge with lithium-air batteries has always been their instability and rapid capacity decline. Scientists have addressed this by creating a multi-layer membrane with micropores, mesopores, and macropores ranging from 2 to 50 nanometers. This structure improves oxygen distribution, reduces electrolyte loss, and enhances the thermal stability of the battery.
The achievements are impressive: the prototype has reached 360 Wh/kg, which is double the energy density of current lithium-ion batteries. Calculations indicate a potential of over 700 Wh/kg – and even a theoretical limit of 11,000 Wh/kg, comparable to the energy density of gasoline. In tests, six electrodes endured 19 cycles without degradation – a rare success for this technology.
Another important step is scalability: researchers have manufactured enlarged electrodes measuring 10×10 cm, signaling a transition from lab experiments to early industrial stages. A key feature of lithium-air batteries is the use of oxygen from the external environment. This frees up space inside the cell, increasing energy density.
This approach potentially makes the technology ideal for electric vehicles, light aviation, and portable devices where every kilogram matters. If this technology reaches mass production, the electric vehicle market will undergo a radical transformation. Energy density 2-3 times higher than current batteries spells the end of “range anxiety” and poses a serious challenge to gasoline cars.