Sodium-ion battery, iron-based multi-element positive electrode material and precursor thereof, and preparation method of precursor
The invention discloses a sodium ion battery, an iron-based multi-element positive electrode material and a precursor thereof, and a preparation method, and belongs to the technical field of batteries. The preparation method of the iron-based multi-element positive electrode material precursor compr...
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| creator | GONG LUNLUN XIONG TONGXING ZOU ZHENGGUANG ZHOU ENLOU LIU RENSHENG ZHANG KEJUN ZHAO LANG |
| description | The invention discloses a sodium ion battery, an iron-based multi-element positive electrode material and a precursor thereof, and a preparation method, and belongs to the technical field of batteries. The preparation method of the iron-based multi-element positive electrode material precursor comprises the following steps: reacting a base solution, a precipitant solution, a complexing agent solution and a metal salt aqueous solution, and stopping feeding when the material growth granularity reaches a preset value; the concentration of ammonia in the base solution is 1.5 g/L-16 g/L, and the pH value is 9.5-12; the pH value range of the system in the seed crystal synthesis process is controlled to be 9.5-12 by the precipitant solution, and the ammonia concentration of the system is controlled to be 0-16g/L by the complexing agent solution; the reaction temperature is 30-70 DEG C; by at least regulating and controlling key parameters, such as temperature, pH value and ammonia concentration, of the seed crystal |
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The preparation method of the iron-based multi-element positive electrode material precursor comprises the following steps: reacting a base solution, a precipitant solution, a complexing agent solution and a metal salt aqueous solution, and stopping feeding when the material growth granularity reaches a preset value; the concentration of ammonia in the base solution is 1.5 g/L-16 g/L, and the pH value is 9.5-12; the pH value range of the system in the seed crystal synthesis process is controlled to be 9.5-12 by the precipitant solution, and the ammonia concentration of the system is controlled to be 0-16g/L by the complexing agent solution; the reaction temperature is 30-70 DEG C; by at least regulating and controlling key parameters, such as temperature, pH value and ammonia concentration, of the seed crystal</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY |
| title | Sodium-ion battery, iron-based multi-element positive electrode material and precursor thereof, and preparation method of precursor |
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