Supercapacitors: Bacterial‐Cellulose‐Derived Carbon Nanofiber@MnO₂ and Nitrogen‐Doped Carbon Nanofiber Electrode Materials: An Asymmetric Supercapacitor with High Energy and Power Density (Adv. Mater. 34/2013)

A new kind of high-performance asymmetric supercapacitor is designed with pyrolyzed bacterial cellulose (p-BC)-coated MnO2 as the positive electrode material and nitrogen-doped p-BC as the negative electrode material, via an easy, efficient, large-scale, and green fabrication approach as described by Shu-Hong Yu and co-workers, on page 4746. The optimal asymmetric device possesses an excellent supercapacitive behavior with quite high energy and power density.