Thi Xuyen Nguyen, Ting Jyh-Ming
International Curriculum for Advanced Materials Program, Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan.
Chemistry. 2017 Dec 6;23(68):17348-17355. doi: 10.1002/chem.201703690. Epub 2017 Nov 13.
Molybdenum disulfide (MoS ) nanoflowers consisting of hybridized 1T/2H phases have been synthesized by using a microwave-assisted hydrothermal (MTH) method. The concentration of the 1T phase, ranging from 40 % to 73 %, is controlled by simply adjusting the ratio of the Mo and S precursors. By using the hybridized 1T/2H MoS as an electrode material, it was demonstrated that the resulting supercapacitor performance is dominated by the 1T phase concentration. It was found that a supercapacitor with 73 % 1T phase exhibits excellent capacitance of 259 F g and great cyclic stability after 1000 cycles. The formation mechanism of the MHT-synthesized hybridized 1T/2H MoS is also reported. More importantly, the mechanism also explains the observed relationship between the 1T phase concentration and the ratio of the Mo and S precursors.
通过微波辅助水热（MTH）法合成了由1T/2H杂化相组成的二硫化钼（MoS₂）纳米花。只需简单调整钼和硫前驱体的比例，就能控制1T相的浓度，其范围为40%至73%。通过使用1T/2H杂化的MoS₂作为电极材料，结果表明所得超级电容器的性能主要由1T相浓度决定。发现1T相含量为73%的超级电容器表现出259 F g的优异电容，并且在1000次循环后具有良好的循环稳定性。还报道了MHT合成的1T/2H杂化MoS₂的形成机制。更重要的是，该机制还解释了观察到的1T相浓度与钼和硫前驱体比例之间的关系。
