Free-standing porous manganese dioxide/graphene composite films for high performance supercapacitors.

@article{Guo2015FreestandingPM,
  title={Free-standing porous manganese dioxide/graphene composite films for high performance supercapacitors.},
  author={Wang-Huan Guo and Teng-Jiao Liu and Peng Jiang and Zhan-Jun Zhang},
  journal={Journal of colloid and interface science},
  year={2015},
  volume={437},
  pages={304-310}
}
A simple hard template method and hydrothermal process have been employed to fabricate a self-standing hierarchical porous MnO2/graphene film. Thus-constructed electrode materials for binder-free supercapacitors exhibit a high specific capacitance of 266.3 F g(-1) at the density of 0.2 A g(-1). Moreover, the two-electrode device demonstrates an excellent rate capability and cycling stability with capacitance retention of 85.1% after 2000 charge-discharge cycles at a current density of 1 A g(-1… CONTINUE READING