出版日期：2023-08-17 00:00:00

著者：Kuen-Chan Lee, Yu-Sheng Hsiao, Ming-Yen Sung, Yi-Lun Chen, Nian-Jheng Wu, Jen-Hsien Huang, Er-Chieh Cho, Huei Chu Weng, Shih-Chieh Hsu

著錄名稱、卷期、頁數：Journal of Environmental Chemical Engineering 11(5), 110762

摘要：Metal oxide heterojunctions have attracted considerable attention in photocatalyst and supercapacitor applications. In this study, NiMn2O4/CoMn2O4 (NMO/CMO) heterojunctions were synthesized using ternary metal-organic frameworks (MOFs) as precursors. After calcination at 500 °C, the as-prepared NMO/CMO composite maintains the porous sheet-like morphology of the ternary MOF, exhibiting a highly porous structure. The heterostructured NMO/CMO composite demonstrates enhanced photocatalytic performance compared with pure NMO and CMO. This enhancement may be attributed to the well-aligned energy levels at the NMO/CMO interface, which effectively reduces charge recombination and facilitates the efficient transport of photogenerated carriers. In addition, the NMO/CMO heterojunction exhibits enhanced supercapacitor performance owing to the increased number of active redox sites and reduced charge transfer resistance. When tested at 3 A/g, the NMO/CMO composite displays a higher capacitance (756.4 F/g) than pure NMO (579.6 F/g) and CMO (519.6 F/g) and remarkable rate capability, maintaining a capacitance of 639 F/g even at 10 A/g. Notably, asymmetric supercapacitors fabricated using NMO/CMO and activated carbon can achieve an energy density of 32.18 W h/kg at 750 W/kg and superior cycling life, retaining 92.1% of its initial capacitance after 3000 cycles.

語言：en

ISSN：2213-3437

期刊性質：國外

收錄於：SCI

審稿制度：否

國別：NLD

出版型式：電子版