A Facile Synthesis of MoS 2 /g-C 3 N 4 Composite as an Anode Material with Improved Lithium Storage Capacity

• Published in: Materials 2019-05, Vol.12 (11)
• Main Authors: Tran Huu, Ha, Nguyen Thi, Xuan Dieu, Nguyen Van, Kim, Kim, Sung Jin, Vo, Vien
• Format: Article
• Language: English
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma12111730

The demand for well-designed nanostructured composites with enhanced electrochemical performance for lithium-ion batteries electrode materials has been emerging. In order to improve the electrochemical performance of MoS -based anode materials, MoS nanosheets integrated with g-C N (MoS /g-C N composite) was synthesized by a facile heating treatment from the precursors of thiourea and sodium molybdate at 550 °C under N gas flow. The structure and composition of MoS /g-C N were confirmed by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis and elemental analysis. The lithium storage capability of the MoS /g-C N composite was evaluated, indicating high capacity and stable cycling performance at 1 C (A·g ) with a reversible capacity of 1204 mA·h·g for 200 cycles. This result is believed the role of g-C N as a supporting material to accommodate the volume change and improve charge transport for nanostructured MoS . Additionally, the contribution of the pseudocapacitive effect was also calculated to further clarify the enhancement in Li-ion storage performance of the composite.