ARTICLE
Freestanding Three-Dimensional Graphene/MnO2 Composite Networks As Ultralight and Flexible Supercapacitor Electrodes Yongmin He,†,* Wanjun Chen,† Xiaodong Li, Zhenxing Zhang, Jiecai Fu, Changhui Zhao, and Erqing Xie*
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School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China. †These authors contributed equally to this work.
ABSTRACT A lightweight, flexible, and highly efficient energy
management strategy is needed for flexible energy-storage devices to meet a rapidly growing demand. Graphene-based flexible supercapacitors are one of the most promising candidates because of their intriguing features. In this report, we describe the use of freestanding, lightweight (0.75 mg/cm2), ultrathin (
