Abstract: The present disclosure provides a vanadium electrolyte, a preparation method and use thereof.

Abstract: Free radical-curable thiol-ene compositions containing a polyamine and/or a polyepoxide and an organic peroxide are disclosed. The hybrid dual cure compositions have an extended working time, a fast tack-free time, and a fast cure time. The compositions are useful as sealants.

Abstract: The present disclosure provides a vanadium electrolyte, a preparation method and use thereof.

Abstract: A wireless power transfer (WPT) system regulation method and system for implementing zero voltage switching (ZVS) in a wide power range are provided. The method includes: determining, according to a topology structure of a WPT system and based on a linear state equation, a phase -shift angle boundary and a switching frequency boundary of an inverter that meet ZVS; fixing a switching frequency at a resonance frequency of the WPT system, and determining, in a phase -shift manner, a phase-shift range and a corresponding first voltage output range for implementing ZVS; determining a frequency variation range of a frequency modulation method; determining an optimal switching frequency based on corresponding switching frequencies and phase-shift angles that meet ZVS at different expected output voltages of the WPT system; determining a second voltage output range for implementing ZVS at the optimal switching frequency; and regulating the WPT system by using different regulation methods.

Abstract: A wireless power transfer (WPT) system regulation method and system for implementing zero voltage switching (ZVS) in a wide power range are provided. The method includes: determining, according to a topology structure of a WPT system and based on a linear state equation, a phase-shift angle boundary and a switching frequency boundary of an inverter that meet ZVS; fixing a switching frequency at a resonance frequency of the WPT system, and determining, in a phase-shift manner, a phase-shift range and a corresponding first voltage output range for implementing ZVS; determining a frequency variation range of a frequency modulation method; determining an optimal switching frequency based on corresponding switching frequencies and phase-shift angles that meet ZVS at different expected output voltages of the WPT system; determining a second voltage output range for implementing ZVS at the optimal switching frequency; and regulating the WPT system by using different regulation methods.

Abstract: The present invention provides a lithium-sulfur battery cathode material and a preparation method thereof, a lithium-sulfur battery cathode and a preparation method thereof, and the lithium-sulfur battery, and belongs to the field of lithium-sulfur batteries. The lithium-sulfur battery cathode material provided by the present invention includes MXene and functional carbon cloth, where the MXene is attached to a fiber surface of the functional carbon cloth, the MXene includes metal carbide or metal nitride, and metal components in the metal carbide and the metal nitride independently include titanium, vanadium, chromium or molybdenum; and the surface of the functional carbon cloth contains hydroxyl and carboxyl functional groups. The lithium-sulfur battery provided by the present invention has high cycle life, specific capacity and coulombic efficiency.