Hauptseite > Publikationsdatenbank > Morphology Dependency of Li$_{3}$V$_{2}$(PO$_{4}$)$_{3}$/C Cathode Material Regarding to Rate Capability and Cycle Life in Lithium-Ion Batteries > print

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100 1 _ |a Yu, Shicheng
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245 _ _ |a Morphology Dependency of Li$_{3}$V$_{2}$(PO$_{4}$)$_{3}$/C Cathode Material Regarding to Rate Capability and Cycle Life in Lithium-Ion Batteries
260 _ _ |a New York, NY [u.a.]
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520 _ _ |a Transition-metal phosphates have been extensively studied as potential electrode materials for lithium-ion batteries. For this application, high rate capability and cycling performance are required. In this work, we present a one-pot solvothermal synthesis process in combination with in situ carbonization for the tailoring of Li3V2(PO4)3/C morphologies with improvements of the electrochemical performance. These include an unstructured cluster, a needle-like microstructure, a flake-like microstructure and a hollowsphere microstructure. We demonstrate a significant impact of the particle morphology with respect to the electrochemical performance. The results obtained include, for instance, needle-like Li3V2(PO4)3/C showing a superior rate capability of about 72% (∼96 mAh g−1) of its theoretical capacity being maintained at 30 C, whereas the flake-like Li3V2(PO4)3/C exhibits outstanding cycling performance with a capacity retention of 97.1% (∼112 mAh g−1) of its initial capacity after 1000 cycles at 2 C. Our work demonstrates that the morphology of cathode particles defines a highly selective parameter to improve the electrochemical properties. Accordingly, strategies to selectively tailor particle morphology for a given application become feasible.
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700 1 _ |a Tempel, Hermann
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700 1 _ |a Eichel, Rüdiger-A.
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700 1 _ |a Kungl, Hans
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700 1 _ |a Schierholz, Roland
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