Nickel foam supported mesoporous MnO_2 nanosheet arrays with superior lithium storage performance

摘要

Mesoporous MnO_2 nanosheet arrays have been directly grown on nickel foam current collectors and exhibited a reversible capacity as high as 1690 mA h g~1 even after one hundred cycles at 100 mA g~1. They also reveal good rate capability and excellent cycling stability.