The multiple synthesis of 2D layered MXene Ti3C2Tx/Ag/Cu composites with enhanced electrochemical properties. Issue 20 (15th October 2022)

• Record Type: Journal Article
• Authors: Zhang, Yan; Guo, ZhiJin; Zhou, JianPing; Sun, DaQian; Li, HongMei
• Is Part Of: Ceramics international. Volume 48:Issue 20(2022)
• Page Start: 30524
• Page End: 30535
• Publication Date: 2022-10-15
• Subjects: MXene -- Multiscale structure -- Multiple synthesis -- Synergistic effect -- Composites; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.06.333
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The reactive groups present on the surface of two-dimensional layered Ti3 C2 Tx materials confer natural superiority to self-assembly compared to other two-dimensional materials. The Ti3 C2 Tx /Ag/Cu composites are prepared using the unique direct reduction and high adsorption capacity possessed by Ti3 C2 Tx . The Ag NPs and Cu NPs growing between the Ti3 C2 Tx layers act as supports to prevent the occurrence of defects such as aggregation and collapse of the structure. Meanwhile, the layer spacing of Ti3 C2 Tx increases, thus exposing more active sites and accelerating the diffusion ability of ions in the electrolyte. The Ag NPs and Cu NPs on the surface of Ti3 C2 Tx and at the edges of the layers combine with each other to form the multi-channel, short distance conductive path, which effectively improves the electron transfer efficiency. The capacitance contribution of Ti3 C2 Tx /Ag/Cu composites reaches 74% at high sweep rates. The Ti3 C2 Tx /Ag/Cu composites can be considered as electrode materials for batteries and capacitors with low internal resistance(0.662 Ω), high electrical conductivity and stable chemical properties.