Phys.org January 8, 2018
Rechargeable aluminum-ion batteries are promising in high-power density but still face critical challenges of limited lifetime, rate capability, and cathodic capacity. Researchers in China have designed a “trihigh tricontinuous” (3H3C) graphene film cathode. It retains high specific capacity of around 120 mAh g−1 at ultrahigh current density of 400 A g−1 (charged in 1.1 s) with 91.7% retention after 250,000 cycles. The battery works well within a wide temperature range of −40 to 120°C with remarkable flexibility bearing 10,000 times of folding, promising for all-climate wearable energy devices. This design opens an avenue for future super-batteries… read more. Open Access TECHNICAL ARTICLE
LED lights powered by ultrafast batteries designed by ZJU scientists. Credit: Zhejiang University