Zhang Renhui, Yang Yingchang, Guo Lei, Luo Yuzhou
School of Materials Science and Engineering, East China JiaoTong University, Nanchang 330013, China.
College of Material and Chemical Engineering, Tongren University, Tongren 554300, China.
Phys Chem Chem Phys. 2022 Feb 23;24(8):4957-4965. doi: 10.1039/d1cp04744b.
Two-dimensional (2D) layered antimony (Sb) materials are of importance due to their unique physicochemical properties, and they can be easily electrochemically exfoliated from bulk Sb in NaSO electrolyte solution. However, the exfoliation yield is quite low and the exfoliated products are easily oxidized to SbO, which prohibits their practical engineering applications. Herein, an antimonene/carbon composite is successfully fabricated with a high exfoliation yield through electrochemical exfoliation of bulk antimony chunk in a mixed electrolyte solution consisting of NaSO and ethylene glycol. When the as-fabricated antimonene/carbon composite is added into PAO6 oil, the lubrication system exhibits a selective lubrication performance when sliding against GCr15 and YG8 ball, and the antiwear enhancement can be further improved by sliding against a YG8 ball. Besides, the antimonene/carbon composite can provide reliability and enough ion corridors during the charge/discharge processes. When tested as an anodic material for sodium-ion batteries, it exhibits a large capacity of 485.0 mA h g at a current density of 200 mA g after 150 cycles and a remarkable rate capability (334.5 mA h g at 5 A g).
二维（2D）层状锑（Sb）材料因其独特的物理化学性质而备受关注，并且可以在NaSO电解液中通过电化学方法从块状Sb中剥离得到。然而，其剥离产率相当低，且剥离产物容易被氧化成SbO，这限制了它们在实际工程中的应用。在此，通过在由NaSO和乙二醇组成的混合电解液中对块状锑块进行电化学剥离，成功制备了具有高剥离产率的锑烯/碳复合材料。当将制备好的锑烯/碳复合材料添加到PAO6油中时，该润滑体系在与GCr15和YG8球滑动摩擦时表现出选择性润滑性能，并且在与YG8球滑动摩擦时抗磨性能可进一步提高。此外，锑烯/碳复合材料在充放电过程中能够提供可靠性和足够的离子通道。当作为钠离子电池的阳极材料进行测试时，在150次循环后，在200 mA g的电流密度下，其表现出485.0 mA h g的大容量，并且具有显著的倍率性能（在5 A g时为334.5 mA h g）。
