Rechargeable lithium battery based on a single hexagonal tungsten trioxide nanowire

Abstract In this paper, we report on a rechargeable lithium battery based on a single hexagonal tungsten oxide (h-WO 3 ) nanowire. This nanobattery can discharge at a voltage of 0.27–0.1 V and a current of 20–10 pA for more than 1000 s with a capacity of 15.2 nC, suggesting that each WO 3 molecule could accommodate 1.8–2.2 Li + ions on average. It exhibits excellent stability and repeatability. Real time ultraviolet (UV) light detection is achieved through a single WO 3 nanowire based UV sensor, which is powered by the nanobattery.

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