کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
187042 459632 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hierarchical LiMn2O4 microspheres for high rate lithium ion batteries, and direct electrochemistry and electrocatalysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Hierarchical LiMn2O4 microspheres for high rate lithium ion batteries, and direct electrochemistry and electrocatalysis
چکیده انگلیسی

Hierarchical LiMn2O4 microspheres were prepared using urchin-like α-MnO2 as a self-sacrificial template. As the cathode material for lithium ion batteries, the electrochemical properties were characterized by cyclic voltammetry and charge/discharge experiments. The results indicated that the LiMn2O4 microspheres had high discharge capacity and excellent cycle stability. Furthermore, a new electrochemical biosensor was constructed by immobilization of bovine myoglobin (Mb) and LiMn2O4 in a thin film of chitosan (CTS) on the surface of carbon ionic liquid electrode (CILE). Electrochemical behaviors of Mb entrapped in the film were investigated by cyclic voltammetry. A pair of well-defined redox peaks appears, which indicates a fast electron transfer rate of Mb with the underlying CILE. The electron transfer coefficient and electron transfer rate constant of Mb were calculated to be 0.47 and 1.04 s−1, respectively. The Mb modified electrode showed good electrocatalytic ability toward the reduction of trichloroacetic acid (TCA) with a detection limit of 0.16 mmol L−1 (3σ).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 94, 1 April 2013, Pages 165–171
نویسندگان
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