Flexible Ultrafast Aqueous Rechargeable Ni//Bi Battery Based on Highly Durable Single-Crystalline Bismuth Nanostructured Anode.

Zeng, Yinxiang; Lin, Ziqi; Meng, Yue; Wang, Yichen; Yu, Minghao; Lu, Xihong; Tong, Yexiang · Adv Mater · 2016

basic_science · Level V

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Abstract

A new type of ultrafast Ni//Bi battery with high flexibility and impressive electrochemical performance is demonstrated for the first time based on an as-prepared Bi electrode as the anode and a NiCo<sub>2</sub> O<sub>4</sub> nanowire electrode as the cathode. The NiCo<sub>2</sub> O<sub>4</sub> //Bi battery is able to deliver a remarkable energy density of 85.8 W h kg<sup>-1</sup> at a power density of 1.02 kW kg<sup>-1</sup> , and still retains 55.4 W h kg<sup>-1</sup> when the power density is increased to 21.2 kW kg<sup>-1</sup> .