Liu Hanwen, Zou Yuqin, Tao Li, Ma Zhaoling, Liu Dongdong, Zhou Peng, Liu Hongbo, Wang Shuangyin
College of Materials Science and Engineering, State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China.
College of Energy, Beijing University of Chemical Technology, Beijing, 100029, China.
Small. 2017 Sep;13(33). doi: 10.1002/smll.201700758. Epub 2017 Jun 28.
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 during the 200th cycle at current density of 100 mA g 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).
一种简便的真空过滤方法首次被用于构建三明治结构阳极。两层石墨烯堆叠夹着一层黑磷（BP）复合材料，这不仅能保护BP不快速退化，还能替代铜箔用作集流体。通过化学键合在BP上包覆还原氧化石墨烯的BP复合材料，是在140℃通过溶剂热反应简单合成的。用于锂离子电池的三明治薄膜阳极在100 mA g的电流密度下第200次循环时展现出1401 mAh g的可逆容量，表明其具有优异的循环性能。此外，这种简便的真空过滤方法对于其他在N-甲基吡咯烷酮（NMP）中具有良好分散性的阳极材料也可能适用。
