2results about How to "Reduce flammability" patented technology

This invention discloses an electrolyte and a battery. The electrolyte comprises an electrolyte, a solvent, and a first additive, the first additive having the structural formula (1). The first additive contains silicon-based phosphate groups, which have low oxidation and reduction potentials. It can generate an inorganic interface film rich in P and Si at the positive and negative electrodes. The generated interface helps to reduce the interfacial impedance of the positive and negative electrodes. Cyclic phosphates have good high-voltage stability. The generated phosphate compounds can suppress excessive ion deposition during the high-voltage positive electrode phase transition, providing better protection for the positive and negative electrode interfaces and improving high-voltage cycle performance. The polycyclic phosphate structure can capture hydroxyl radicals and hydrogen radicals generated by the electrolyte at high temperatures, preventing the diffusion reaction of hydrocarbon radicals. At the same time, the silicon-based structure can generate a stable thermally stable film at the positive and negative electrode interfaces. The generated high-thermal-stability inorganic thermal insulation protective layer can reduce the flammability of the electrolyte and significantly improve the safety performance of the battery.

The application discloses a hydrogen injection strategy optimization method for a dual-fuel X-type rotor engine, obtains geometric parameters of the X-type rotor engine, establishes a CDF fluid simulation model of a dual-fuel X-type rotor engine with gasoline intake port premixing and hydrogen in-cylinder direct injection, determines engine ignition parameters and operating conditions of a single hydrogen injection strategy, and obtains, through simulation calculation, a hydrogen injection time point at which a hydrogen distribution area is maximum and a hydrogen injection time point at which a flame front area is maximum. Under the condition that the hydrogen injection total amount at the two hydrogen injection time points is the same as that of the single hydrogen injection strategy and the hydrogen injection mass fraction at the two hydrogen injection time points is taken as a variable, the hydrogen injection mass fraction corresponding to the hydrogen injection time point at which the hydrogen distribution area is maximum and the hydrogen injection mass fraction corresponding to the hydrogen injection time point at which the flame front area is maximum are obtained through simulation calculation, an optimal two-stage hydrogen direct injection strategy of the dual-fuel X-type rotor engine is obtained, and the thermal efficiency and emission performance of the rotor engine are improved.