کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
189958 459690 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanostructural CoSnC anode prepared by CoSnO3 with improved cyclability for high-performance Li-ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Nanostructural CoSnC anode prepared by CoSnO3 with improved cyclability for high-performance Li-ion batteries
چکیده انگلیسی

Stannate, CoSnO3, which mixes the elements Co and Sn evenly at the atomic level, was used as precursor to prepare CoSnC by a modified carbothermal reduction method. The synthesis process was characterized by differential thermal analysis (DTA) and X-ray diffraction (XRD). The particle feature was evaluated by transmission electron microscopy (TEM). The results indicated the as-prepared composite has a well-coated carbon layer that effectively prevents the encapsulated, low melting point alloy from out-flowing in a high-temperature treatment process. In addition, this structure, CoSnx grains surrounded by carbon, prevents aggregation and pulverization of nanosized, tin-based alloy particles during charge/discharge cycling and improves the cycling stability of the alloy. The synthesized CoSnC integrates the merits of intermetallic compounds and nanosized anode materials and delivers a reversible capacity of 450 mA h g−1 with a capacity retention of 72% after 50 cycles.


► Stannate, CoSnO3 was used as precursor.
► A modified carbothermal reduction method was used to prepare CoSnC.
► The synthesized CoSnC showed improved electrochemistry performance.
► This material integrates the merits of intermetallic compounds and nanosized anode materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 56, Issue 13, 1 May 2011, Pages 4812–4818
نویسندگان
, , , , ,