Carbon-Coated Porous Aluminum Foil Anode for High-Rate, Long-Term Cycling Stability, and High Energy Density Dual-Ion Batteries.

Tong, Xuefeng; Zhang, Fan; Ji, Bifa; Sheng, Maohua; Tang, Yongbing · Adv Mater · 2016

basic_science · Level V

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Abstract

A 3D porous Al foil coated with a uniform carbon layer (pAl/C) is prepared and used as the anode and current collector in a dual-ion battery (DIB). The pAl/C-graphite DIB demonstrates superior cycling stability and high rate performance, achieving a highly reversible capacity of 93 mAh g<sup>-1</sup> after 1000 cycles at 2 C over the voltage range of 3.0-4.95 V. In addition, the DIB could achieve an energy density of ≈204 Wh kg<sup>-1</sup> at a high power density of 3084 W kg<sup>-1</sup> .