Construction of heterogeneous 2D layered MoS2/MXene nanohybrid anode material via interstratification process and its synergetic effect for asymmetric supercapacitors

• Published in: Applied surface science 2020-12, Vol.534, p.147644, Article 147644
• Main Authors: Kirubasankar, Balakrishnan, Narayanasamy, Mugilan, Yang, Jun, Han, Mingyu, Zhu, Wenhuan, Su, Yanjie, Angaiah, Subramania, Yan, Chao
• Format: Article
• Language: English
• Subjects: Asymmetric supercapacitor; Interstratification process; Molybdenum disulfide nanosheets; MXene; Nanohybrid
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2020.147644

[Display omitted] •2D heterogeneous MoS2/MXene nanohybrid (MMX) is synthesized via interstratification process.•Reduce the surface oxidation of Ti and preserve the phyiso-chemical properties of MXene.•Mainly avoided the self-restacking of both MoS2 nanosheets and MXene.•MMX exhibits a hybrid-type capacitance with excellent cycle stability of 96.5% even after 5000 cycles.•β-Ni(OH)2||MMX based ASC device exhibits an energy density of 54 W h kg−1. Herein, a rational design of combining both MXene and MoS2 nanosheets is reported. The heterogeneous 2D layered MoS2/MXene nanohybrid (MMX) is prepared by a simple surfactant assisted interstratification process is mainly to avoid the self-restacking of both the components. Moreover, this process can reduce the surface oxidation of MXene and preserve the physio-chemical properties of MMX. The obtained interlayered MMX structure provides more active electrochemical sites with the enhanced mass transfer between electrode-electrolyte interface and excellent structural durability. The MMX electrode represents a hybrid-type capacitance behaviour with a high specific capacitance of 583 F g−1 at 1 A g−1 with a good rate capability of 82.5% and an excellent cycle stability of 96.5% at 5 A g−1 over 5000 cycles. Furthermore, β-Ni(OH)2||MMX asymmetric supercapacitor (ASC) device is fabricated with 3 M KOH as the electrolyte. This device delivered a high specific capacitance of 153 F g−1 at 1 A g−1 with 90% capacitance retention over 10,000 cycles at 5 A g−1, indicating its excellent storage capacitance. In addition, an exceptional energy and power densities of 54 W h kg−1 and 0.86 kW kg−1, can be achieved.