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5 years ago

Sandwiched Thin-Film Anode of Chemically Bonded Black Phosphorus/Graphene Hybrid for Lithium-Ion Battery

Sandwiched Thin-Film Anode of Chemically Bonded Black Phosphorus/Graphene Hybrid for Lithium-Ion Battery
Hanwen Liu, Peng Zhou, Dongdong Liu, Hongbo Liu, Li Tao, Shuangyin Wang, Zhaoling Ma, Yuqin Zou
A facile vacuum filtration method is applied for the first time to construct sandwich-structure anode. Two layers of graphene stacks sandwich a composite of black phosphorus (BP), which not only protect BP from quickly degenerating but also serve as current collector instead of copper foil. The BP composite, reduced graphene oxide coated on BP via chemical bonding, is simply synthesized by solvothermal reaction at 140 °C. The sandwiched film anode used for lithium-ion battery exhibits reversible capacities of 1401 mAh g−1 during the 200th cycle at current density of 100 mA g−1 indicating superior cycle performance. Besides, this facile vacuum filtration method may also be available for other anode material with well dispersion in N-methyl pyrrolidone (NMP). A facile vacuum filtration method is applied for the first time to construct sandwich-structure anode. A composite of black phosphorus with chemical bonding is sandwiched by two layers of graphene stacks which are also serving as current collector instead of copper foil. The sandwiched film anode exhibits reversible capacities of 1401 mAh g−1 during the 200th cycle.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/smll.201700758

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