2results about How to "Uneven distribution" patented technology

This invention discloses a method for preparing a composite polyanionic sodium-ion battery cathode material, relating to the field of sodium-ion battery cathode material technology, including the following steps: S1, preparing in-situ doped ferrous sulfate; S2, preparing a graphene-based dispersion; S3, preparing a modified ferrous sulfate solution; S4, preparing an NFPP precursor; S5, preparing an NFPP cathode material. This invention uses stainless steel pickling waste liquid as raw material, first reducing it by adding elemental iron, then dispersing it in a graphene-based dispersion containing tannic acid to obtain carbon-coated modified ferrous sulfate; preparing the NFPP precursor by co-precipitation; and finally sintering to obtain a composite polyanionic sodium-ion battery cathode material with high compaction density and better electrochemical performance, thus improving the problems of poor conductivity, low compaction, low capacity, low rate capability, and high cost of existing NFPP cathode materials.

The utility model discloses a powder spraying device capable of uniformly spraying powder, which comprises a bearing plate, a supporting box body is fixedly arranged above the bearing plate through a bolt fastener, a control box body is stably and fixedly arranged at the top of the supporting box body, an oil-water separator is arranged on one side of the supporting box body, and a water outlet is formed in the other side of the supporting box body. A main air inlet seat is specially arranged on the rear side of the control box body, an air inlet pipe is connected to the upper portion of the main air inlet seat, a vulcanizing powder barrel device is further placed on the upper portion of the bearing plate, a powder suction rod stretches into the vulcanizing powder barrel device to suck powder, the powder is conveyed to a spray gun through a wheel cylinder body and a powder conveying pipe, it is guaranteed that the powder is conveyed stably and continuously, and a foundation is laid for uniform powder spraying. The fluidizer enables powder to uniformly enter a gun and avoid caking, the adjusting static knob on the box body is controlled to accurately adjust static parameters, the powder is uniformly attached to a workpiece, the atomization adjusting valve accurately adjusts atomization parameters, the powder is atomized well and diffused uniformly, uniform distribution in the whole powder spraying process is achieved, and the powder spraying quality is improved.