Hydrothermal-deposition synthesis of MnO2/MnS nanorods as high-performance asymmetric supercapacitor positive electrode materials
作者机构：College of Chemistry Jilin University Key Laboratory of Physics and Technology for Advanced Batteries Ministry of Education Jilin University Zhuhai Zhongli New Energy Sci-Tech Co. Ltd.
出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))
年 卷 期：2024年第34卷第5期
页 面：1057-1065页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
主 题：High energy density Nanostructured MnO2/MnS2 rod Outstanding cycling stability Supercapacitors
摘 要：Nanostructuring has shown promise in enhancing the performance of MnO2for 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 MnO2/MnS rod electrodes on nickel foam. The roded heterostructure enhances specific surface area, conductivity, and symbiotic effect between MnO2and MnS. With optimized material and structural advantages, the electrode reaches a capacitance of 977.6 F g-1at 1 A g-1, demonstrating extended cycling lifespan. Using MnO2/MnS-5h rods as the positive electrode and activated carbon as the negative electrode, the supercapacitor achieves an energy density of 122.23Wh kg-1at 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 MnO2/MnS based supercapacitor in high-performance energy storage systems.
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