%0 Journal Article
%A Yu, Shicheng
%A Mertens, Andreas
%A Tempel, Hermann
%A Eichel, Rüdiger-A.
%A Kungl, Hans
%A Schierholz, Roland
%T Morphology Dependency of Li$_{3}$V$_{2}$(PO$_{4}$)$_{3}$/C Cathode Material Regarding to Rate Capability and Cycle Life in Lithium-Ion Batteries
%J Electrochimica acta
%V 232
%@ 0013-4686
%C New York, NY [u.a.]
%I Elsevier
%M FZJ-2016-07329
%P 310-322
%D 2017
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000398327300037
%R 10.1016/j.electacta.2017.02.136
%U https://juser.fz-juelich.de/record/824774