Contents: (Small 11/2013)

G. Z. Shen and co-workers present a novel design for a fl exible planar-integrated allsolid-state fi ber supercapacitor, including several ZnCo 2 O 4 nanowire arrays/carbon fi ber composite wire electrodes, a transparent/bendable PET substrate, and two Ag electrodes. The as-fabricated fl exible device exhibits high effi ciency, a long cycle life, and excellent electrical stability. The strategy presented on page 1998 enables highly fl exible future supercapacitors with maximum functionality and minimized size, which may meet many potential applications such as wearable/stretchable displays, cardiac pacemakers, electronic paper, etc.