CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.
College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, P. R. China.
ChemSusChem. 2023 Feb 20;16(4):e202201200. doi: 10.1002/cssc.202201200. Epub 2022 Sep 1.
Sodium based dual-ion battery (SDIB) has been regarded as one of the promising batteries technologies thanks to its high working voltage and natural abundance of sodium source, its practical application yet faces critical issues of low capacity and sluggish kinetics of intercalation-type graphite anode. Here, a tubular nanohybrid composed of building blocks of carbon-film wrapped WS nanosheets on carbon nanotube (WS /C@CNTs) was reported. The expanded (002) interlayer and dual-carbon confined structure endowed WS nanosheets with fast charge transportation and excellent structural stability, and thus WS /C@CNTs showed highly attractive electrochemical properties for Na storage with high reversible capacity, fast kinetic, and robust durability. The full sodium-based dual ion batteries by coupling WS /C@CNTs anode with graphite cathode full cell presented a high reversible capacity (210 mAh g at 0.1 A g ), and excellent rate performance with a high capacity of 137 mAh g at 5.0 A g .
钠离子双离子电池（SDIB）因其高工作电压和天然丰富的钠源而被认为是很有前途的电池技术之一，但其实用化仍面临着插层型石墨负极容量低和动力学迟缓的关键问题。在此，我们报道了一种由碳纳米管上包裹 WS 纳米片的碳薄膜构建单元组成的管状纳米杂化材料（WS/C@CNTs）。扩展的（002）层间距和双碳限域结构赋予 WS 纳米片快速的电荷输运和优异的结构稳定性，因此 WS/C@CNTs 表现出了对钠离子存储的高可逆容量、快速动力学和稳健耐久性等极具吸引力的电化学性能。通过将 WS/C@CNTs 作为负极与石墨正极组装成全电池，全钠离子双离子电池表现出了 210 mAh g 的高可逆容量（在 0.1 A g 下）和出色的倍率性能（在 5.0 A g 下具有 137 mAh g 的高容量）。
