Parveen Nazish, Ansari Sajid Ali, Alamri Hatem R, Ansari Mohammad Omaish, Khan Ziyauddin, Cho Moo Hwan
School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongbuk 712-749, South Korea.
Department of Energy & Materials Engineering, Dongguk University, Seoul 100-715, Republic of Korea.
ACS Omega. 2018 Feb 7;3(2):1581-1588. doi: 10.1021/acsomega.7b01939. eCollection 2018 Feb 28.
SnS is an emerging candidate for an electrode material because of the considerable interlayer spaces in its crystal structures and the large surface area. SnS as a photocatalyst and in lithium ion batteries has been reported. On the other hand, there are only a few reports of their supercapacitor applications. In this study, sheetlike SnS (SL-SnS), flowerlike SnS (FL-SnS), and ellipsoid-like SnS (EL-SnS) were fabricated via a facile solvothermal route using different types of solvents. The results suggested that the FL-SnS exhibited better capacitive performance than the SL-SnS and EL-SnS, which means that the morphology has a significant effect on the electrochemical reaction. The FL-SnS displayed higher supercapacitor performance with a high capacity of approximately ∼431.82 F/g at a current density of 1 A/g. The remarkable electrochemical performance of the FL-SnS could be attributed to the large specific surface area and better average pore size. These results suggest that a suitable solvent is appropriate for the large-scale construction of SnS with different morphologies and also has huge potential in the practical applications of high-performance supercapacitors.
硫化锡因其晶体结构中存在大量层间空间和较大的表面积，成为一种新兴的电极材料候选物。已有关于硫化锡作为光催化剂以及在锂离子电池中的报道。另一方面，关于其在超级电容器应用方面的报道却很少。在本研究中，通过使用不同类型的溶剂，采用简便的溶剂热法制备了片状硫化锡（SL-SnS）、花状硫化锡（FL-SnS）和椭球状硫化锡（EL-SnS）。结果表明，FL-SnS表现出比SL-SnS和EL-SnS更好的电容性能，这意味着形态对电化学反应有显著影响。在1 A/g的电流密度下，FL-SnS展现出较高的超级电容器性能，具有约431.82 F/g的高比电容。FL-SnS卓越的电化学性能可归因于其较大的比表面积和较好的平均孔径。这些结果表明，合适的溶剂适合大规模构建具有不同形态的硫化锡，并且在高性能超级电容器的实际应用中也具有巨大潜力。
