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Supercapacitors display promising electrochemical performance with high power density and excellent cycle stability. However, their low energy density limits their advancement in a broader range of applications. To enhance their energy density, we proposed self-assembled spinel NiMn2S4 nanoflakes grown on nickel foam which we successfully prepared by a facile hydrothermal method. The NiMn2S4 electrode delivers a high capacitance of 2096.7 F g−1 at 1.0 A g−1, with an exceptional rate capability (~720.6 F g−1 at a very high current density of 100 A g−1) and good cycle stability (~85.1% retention of the initial capacitance after 7000 cycles with the Coulombic efficiency around 100%). The as-fabricated asymmetric supercapacitors based on NiMn2S4 nanoflakes//active carbon demonstrate an energy density of 73.6 W h kg−1 at 800.5 W kg−1 and adequate cycling performance of ~84.6% capacitance retention at 15 A g−1 after 10000 cycles. The results reveal that the nanostructured NiMn2S4 is an excellent electrode material for high-performance energy storage applications. [ABSTRACT FROM AUTHOR]

Porcine parvovirus (PPV) infections can lead to significant losses to the swine industry by causing reproductive failure in pigs. Germacrone has been reported to efficiently suppress the replication of influenza virus. In this report, the antiviral activity of germacrone on PPV in swine testis (ST) cells was investigated. Here, we show for the first time that germacrone protects cells from PPV infection and suppresses the synthesis of viral mRNA and protein. Furthermore, we show that germacrone inhibits PPV replication at an early stage in a dose-dependent manner. These findings suggest that germacrone is a potential candidate for anti-PPV therapy. [ABSTRACT FROM AUTHOR]