Pristine trivanadate (LiV₃O₈) and doped lithium trivanadate (LiV_3–xM_xO₈, M = Zn/Co/Fe/Sn/Ti/Zr/Nb/Mo, x = 0.01/0.05/0.1 M) compounds were prepared by a simple reflux method in the presence of the polymer, Pluronic P123, as the chelating agent. For comparison, pristine LiV₃O₈ alone was also prepared in the absence of the chelating agent. The Rietveld-refined X-ray diffraction patterns shows all compounds to exist in the layered monoclinic LiV₃O₈ phase belonging to the space group of P2₁/m. Scanning electron microscopy analysis shows the particles to exhibit layers of submicron-sized particles. The electrochemical performances of the coin cells were compared at a current density of 30 mA/g in the voltage window of 2–4 V. The cells made with compounds LiV_2.99Zr_0.01O₈ and LiV_2.95Sn_0.05O₈ show a high discharge capacity of 245 ± 5 mA h/g, with an excellent stability of 98% at the end of the 50th cycle. The second cycle discharge capacity of 398 mA h/g was obtained for the compound LiV_2.99Fe_0.01O₈, and its capacity retention was found to be 58% after 50 cycles. The electrochemical performances of the cells were correlated with the electrical properties and the changes in the structural parameters of the compounds.

中文翻译：

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电导率对层状结构三钒酸锂（LiV _{3– x} M _x O ₈，M = Zn / Co / Fe / Sn / Ti / Zr / Nb / Mo，x = 0.01-0.1）的电化学性能的影响用于储能

原始三钒酸盐（LiV ₃ O ₈）和掺杂的三钒酸锂（LiV _{3– x} M _x O ₈，M = Zn / Co / Fe / Sn / Ti / Zr / Nb / Mo，x = 0.01 / 0.05 / 0.1 M）在聚合物Pluronic P123作为螯合剂的存在下，通过简单的回流方法制备了氯丁酮。为了比较，在不存在螯合剂的情况下也单独制备了原始的LiV ₃ O ₈。Rietveld精制的X射线衍射图表明，所有化合物均存在于层状单斜LiV ₃ O ₈相中，该相属于P 2 ₁ / m的空间群。扫描电子显微镜分析显示颗粒显示出亚微米级颗粒层。在2–4 V的电压窗口中以30 mA / g的电流密度比较了币形电池的电化学性能。用化合物LiV _2.99 Zr _0.01 O ₈和LiV _2.95 Sn _0.05 O ₈制成的电池显示出高放电容量为245±5 mA h / g，在第50个周期结束时具有98％的出色稳定性。化合物LiV _2.99 Fe _0.01 O ₈的第二循环放电容量为398 mA h / g，在50个循环后发现其容量保留率为58％。电池的电化学性能与化合物的电学性质和结构参数的变化相关。