Hydrothermal-deposition synthesis of MnO_(2)/MnS nanorods as high-performance asymmetric supercapacitor positive electrode materials  

作　　者：Ziming Wang Hanbo Wang Dongyu Pei Sheng Wan Yan Wang Mingrui Yu Haiyan Lu 

机构地区：[1]College of Chemistry,Jilin University,Changchun,130012,China [2]Key Laboratory of Physics and Technology for Advanced Batteries,Ministry of Education,Jilin University,Changchun,130012,China [3]Zhuhai Zhongli New Energy Sci-Tech Co.,Ltd.,Zhuhai,519000,Guangdong,China

出　　处：《Progress in Natural Science:Materials International》2024年第5期1057-1065,共9页自然科学进展·国际材料(英文版)

摘　　要：Nanostructuring has shown promise in enhancing the performance of MnO_(2)for energy storage in supercapacitors,highlighting its technological significance. This study introduces an innovative synthesis method, employing hydrothermal and constant-pressure deposition techniques, to produce nanostructured MnO_(2)/MnS rod electrodes on nickel foam. The roded heterostructure enhances specific surface area, conductivity, and symbiotic effect between MnO_(2)and MnS. With optimized material and structural advantages, the electrode reaches a capacitance of 977.6 F g^(-1)at 1 A g^(-1), demonstrating extended cycling lifespan. Using MnO_(2)/MnS-5h rods as the positive electrode and activated carbon as the negative electrode, the supercapacitor achieves an energy density of 122.23Wh kg^(-1)at 898.75 W kg^(-1). Notably, it maintains 91.55 % capacity retention after 5000 cycles at 10 A g-1,indicating outstanding cycling stability. This research presents a promising solution for efficient energy storage,emphasizing the potential application of the developed MnO_(2)/MnS based supercapacitor in high-performance energy storage systems.

关 键 词：Nanostructured MnO_(2)/MnS2 rod SUPERCAPACITORS High energy density Outstanding cycling stability 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM53[电气工程—电器]