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Breakthrough in Battery Technology: Chinese Researchers Unveil 711 Wh/ kg Lithium Battery

April 28, 2023
A Leap Forward in Lithium-Ion Battery Energy Density

Recently, Chinese researchers developed a #LithiumIonBattery with an astonishing #energydensity of about 700 Wh/kg. While today's #lithiumbatteries struggle to achieve an energy density of 300 Wh/kg, this breakthrough has the potential to revolutionize #batterytechnology in the future, particularly for long-range electric vehicles and electric aviation.
The research team from the Chinese Academy of Sciences' Institute of Physics in Beijing used a lithium metal #anode and an ultra-thick high discharge capacity #cathode with an area capacity greater than 10 mAh/cm2. They attribute their achievement to the lithium-rich manganese-based oxides' high charge/discharge voltage, which allows for larger lithium-ion storage capacity.
Source: A 700 W·h·kg-1 Rechargeable Pouch Type Lithium Battery, Quan Li et al 2023 Chinese Phys. Lett. 40 048201

Despite the exciting progress, the researchers acknowledge that there will always be a trade-off between energy density, cycle performance, rate capability, and safety. The cycle performance of high energy density batteries still lags behind that of commercially available batteries, and overcoming this limitation will be the focus of their future research.

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