Realization of high-purity 1T-MoS_(2)by hydrothermal synthesis through synergistic effect of nitric acid and ethanol for supercapacitors  

作　　者：Han Li Hui Li Ziqiang Wu Lili Zhu Changdian Li Shuai Lin Xuebin Zhu Yuping Sun 

机构地区：[1]Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China [2]University of Science and Technology of China,Hefei 230026,China [3]High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China [4]Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China

出　　处：《Journal of Materials Science & Technology》2022年第28期34-40,共7页材料科学技术（英文版）

基　　金：supported by the National Key R&D Program of China(Nos.2016YFA0401801);Natural Science Foundation of Anhui Province(No.1608085QE107);the Users with Excellence Program of Hefei Science Center CAS(No.2021HSC-UE009)。

摘　　要：Phase engineering of molybdenum disulfide(MoS_(2))can achieve phase transformation from the semiconducting phase(2H-MoS_(2))with poor conductivity to the metallic phase(1T-MoS_(2))with superior electrochemical properties.Therefore,it is desirable to prepare high concentration 1T-MoS_(2)by simple and facile methods.In this work,MoS_(2)with high concentration of 1T phase is successfully prepared by one-pot hydrothermal synthesis through the synergistic effect of HNO_(3)and CH_(3)CH_(2)OH,which is stable for more than half of a year.The as-synthesized MoS_(2)shows high capacitance of 392Fg^(-1)at 1A g^(-1)as used for supercapacitors electrodes,and displays excellent capacitance retention(83%after 10,000 cycles).Asymmetric supercapacitors(ASCs)devices assembled by the as-synthesized MoS_(2)and MnO_(2)on carbon cloths,exhibit high energy and power densities(0.194 m Wh cm^(-2)and 13.466 mW cm^(-2)).These results shed a light to realize 1T phase MoS_(2)through the synergistic effect in hydrothermal processing.

关 键 词：MoS_(2) Metallic phase Synergistic effect Hydrothermal synthesis SUPERCAPACITOR 

分 类 号：TM53[电气工程—电器] TQ136.12[化学工程—无机化工]