کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437526 1398174 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of processing parameters on the charge storage properties of MgCo2O4 electrodes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effect of processing parameters on the charge storage properties of MgCo2O4 electrodes
چکیده انگلیسی
Three morphologies of magnesium cobaltite (MgCo2O4), viz. cuboidal microcrystals, nanoflowers, and nanospheres, were synthesized using hydrothermal and molten salt methods and evaluated their electrochemical energy storage properties. Among them cuboidal microcrystal and nanoflowers were obtained by a facile hydrothermal route - the former with ethylene glycol and the latter with hexadecyltrimethylammonium bromide as surfactants. The cuboidal microcrystals showed layered flake microstructure with an appreciable space between the layers (~ 100 nm), which would facilitate ion movement between the flakes. The electrochemical studies of the materials revealed the superiority of MgCo2O4 cuboidal microcrystals as a charge storage medium over the nanoflowers and nanospheres, the reasons for this is deeply investigated and reported herewith. The specific charge stored in the MgCo2O4 cuboidal microcrystal electrode was ~ 345 C g−1 at a specific current of 1 A g−1 which was superior to nanoflowers (~ 178 C g−1) and nanospheres (~ 139 C g−1) at the similar current density in 3 M LiOH electrolyte. The MgCo2O4 cuboidal microcrystals also demonstrated superior charge retention (~ 110%) after 3000 cycles over the other electrodes demonstrating its practical utility as a charge storage material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 15, 15 October 2017, Pages 12270-12279
نویسندگان
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