Preparation method of carbon-doped manganese phosphate (III)

• Main Author: JIANG YANGFANG
• Format: Patent
• Language: Chinese; English
• Published: 14.08.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a preparation method of carbon-doped manganese phosphate (III). The preparation method comprises the following steps: uniformly mixing manganese oxalate and carbon, placing ina high-temperature furnace, reacting for 4h under the inert atmosphere, cooling, crushing and sieving to obtain solid particles; adding the solid particles in a mixed solution of hydrogen peroxide andphosphoric acid, stirring and reacting for 35min at the temperature of 28 DEG C, and then adding the phosphoric acid to regulate the pH of the mixed solution to 2.41, warming to the temperature of 89DEG C to continuously stir and react for 85min, and then filtering to obtain first mother liquor and a first residue; adding the first residue in a hot pure water to wash until the pH of the washingwater is 5.5, adding in a microwave dryer to dry until the moisture content is less than 1%, mixing, sieving, deironing and packaging to obtain the carbon-doped manganese phosphate (III). Through thepreparation method disclosed