Controllable synthesis of Li3PO4 hollow nanospheres for the preparation of high performance LiFePO4 cathode material
Source abstract
Abstract
Abstract Lithium phosphate hollow nanospheres were prepared in a membrane dispersion microreactor using aqueous phosphoric acid and lithium hydroxide solutions as reactants. The influences of reactant flow rate ratio and temperature on the purity and morphology of the prepared nanospheres were investigated using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The results showed that nanospheres prepared in the continuous flow condition had a hollow interior structure with high crystallinity. A possible mechanism for the formation of this hollow structured Li3PO4 was also proposed. Using Li3PO4 hollow nanospheres as the precursor, LiFePO4 hollow nanospheres were successfully synthesized via a solvothermal route in ethylene glycol. After coating with carbon, the LiFePO4/C hollow nanospheres exhibited excellent electrochemical performance, especially at high rates, and could discharge124 mAh/g at 10 C, and even 98 mAh/g at 40 C.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Advanced Battery Materials and Technologies
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