3results about How to "Lower reduction potential" 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 invention discloses an electrolyte, a secondary battery and an electric device, and belongs to the technical field of secondary batteries. The non-aqueous solvent contained in the electrolyte can be based on diamide groups contained in a special structure of the non-aqueous solvent, lithium salt in the electrolyte can be effectively separated under the low-temperature condition, a solvation structure can be formed easily, transmission of lithium ions is promoted, and the ionic conductivity in the electrolyte is improved; meanwhile, the reduction potential of the non-aqueous solvent is high, and the non-aqueous solvent is not decomposed in the charging and discharging processes of the battery, so that the lithium salt can be stably dissolved, and the impedance of the battery in the charging and discharging processes is reduced; the additive with low reduction potential preferentially reacts with the non-aqueous solvent with high reduction positioning, a stable SEI layer is formed on the surface of the negative electrode, decomposition of the non-aqueous solvent is reduced, in addition, a small amount of decomposed non-aqueous solvent and the decomposed additive form a stable SEI film, a uniform and stable protection layer is formed, and the capacity retention rate of the battery in the circulation process is improved.

The application relates to a negative electrode sheet, a battery and an electric device. The negative electrode sheet comprises a negative electrode current collector layer and a negative electrode material layer which are arranged in a stack, the negative electrode material layer comprises a carbon-based negative electrode material, a negative electrode binder and a first additive, the negative electrode binder comprises lithium polyacrylate, and the structural formula of the first additive is