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In this work, Mn3O4 nanosheets were prepared by partially reducing MnO2, and then wrapped by graphene to form the composites. Flexible binder-free electrodes based on graphene-Mn3O4 nanosheets and carbon cloth were prepared with the assistance of poles repel. As electrodes for supercapacitors, the flexible electrodes exhibited a specific capacitance of 502Fg−1 in 1M Na2SO4 at a current density of...
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