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

Adv Mater. 2016 Dec;28(45):9979-9985. doi: 10.1002/adma.201603735. Epub 2016 Sep 28.

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-1 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-1 at a high power density of 3084 W kg-1 .

Keywords: anodes; cycling stability; dual-ion batteries; energy density; porous aluminum.