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3D Porous carbon derived from pine needle is prepared by hydrothermal followed KOH activation process. The high surface area (1175 m2 g−1) and rich hierarchical pores provide the electrode with high capacitance. And the abundant surface oxygen functional groups offer additional pseudo-capacitance, which would increase the capacitance. It delivers the capacitance of 348 F g−1 at 1 A g−1 in a three-electrode...
Al-doped ZnO nanoparticles (AZONs) have been successfully implanted in reduced graphene oxide (RGO) by a simple annealing process. The unique layered structure of composites is obtained, which is mainly ascribed to the well-anchored AZONs on the surface of RGO sheets. As anode materials for lithium ion batteries, the AZONs/RGO composites deliver an initial charge capacity of 624mAhg−1 and a 100th...
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