MnO2 Nanoflowers Decorated on ZIF‐8‐ZnO with Ni Foam Supportfor High‐Performance Supercapacitors
Source abstract
Abstract
Abstract In this study, ZIF‐8 (Zn(MeIn)2, MeIn=2‐methylimidazole) was synthesized directly on Ni foam with the use of polydopamine (PDA). By following a hydrothermal process, MnO2 nanoflowers were decorated on the hybrid material of ZIF‐8/ZnO, as derived from ZIF‐8 via pyrolysis at 500 °C under nitrogen flow. The produced binder‐free electrode (NF/ZIF‐8‐ZnO/MnO2) demonstrated an excellent electrochemical performance for supercapacitors, including a specific capacitance of 2005 F g−1 at 2 A g−1 and a fairly high cycling stability (90.74% retention after 4000 cycles). Furthermore, a NF/ZIF‐8‐ZnO/MnO2//activated carbon (AC) asymmetric supercapacitor showed an energy density of 70.57 Wh kg−1 given a power density of 112.45 kW kg−1. These results demonstrate that NF/ZIF‐8‐ZnO/MnO2 is a promising candidate for supercapacitors due to the synergistic contribution of ZIF‐8, ZnO and MnO2.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Life Science Suzhou University of Science and Technology Kerui Road Suzhou 215011 P. R. China
Funding
National Natural Science Foundation of China
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