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Min Chang Kim,Ghuzanfar Saeed,Asrar Alam,Youngjoong Choi,Liguo Zhang,Damin Lee,Se-Hun Kwon,산제이 마튜,Kwang Ho Kim 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.124 No.-
The design of electrode materials for improved electrochemical properties and stable geometric configurationis known as effective research in developing the electrochemical capability of supercapacitors(SCs). However, there is a difficulty in designing innovative composite material with excellent electricalconductivity and superior specific capacity by way of low cost and easy synthesis process. Herein, for thefirst time, a stable Sn-Co-S/MXene hybrid material is fabricated through the electrochemical assembly bycombining positively charged ultrafine Sn-Co-S nanoparticles (NPs) and negatively charged 2D Ti3C2Tx(MXene) sheets due to electrostatic interaction. The Sn-Co-S/MXene hybrid material has displayed excellentelectrochemical performance with an ultrahigh specific capacity of 305.71 mA h gm1 at 1 A g1 andcapacity retention of 94.8% after 10, 000 charge–discharge cycles. The Sn-Co-S/MXene hybrid material ofhigh electrochemical performance has improved charge transfer kinetics during the charge–dischargeprocess, due to the synergistic coupling effect between ultrafine Sn-Co-S nanoparticles and MXenesheets. Furthermore, the Sn-Co-S/MXene//activated carbon (AC) asymmetric supercapacitor (ASC) devicehas been configured with the assistance of Sn-Co-S/MXene as cathode and AC as anode materials. The Sn-Co-S/MXene//AC ASC device exhibits a stable potential window of 1.7 V, a high specific capacitance of108.50F g1 at 1 A g1, and an energy density of 43.55Wh kg1 at a power density of 0.83 kW kg1. This study validates the design and application of highly electroactive Sn-Co-S/MXene hybrid electrodematerial for ultrastable asymmetric supercapacitors.
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