کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
192596 459746 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Porous Co3O4 nanoplatelets by self-supported formation as electrode material for lithium-ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Porous Co3O4 nanoplatelets by self-supported formation as electrode material for lithium-ion batteries
چکیده انگلیسی

In this paper, we have reported a simple and rapid approach for the large-scale synthesis of β-Co(OH)2 nanoplatelets via the microwave hydrothermal process using potassium hydroxide as mineralizer at 140 °C for 3 h. Calcining the β-Co(OH)2 nanoplatelets at 350 °C for 2 h, porous Co3O4 nanoplatelets with a 3D quasi-single-crystal framework were obtained. The process of converting the β-Co(OH)2 nanoplatelets into the Co3O4 nanoplatelets is a self-supported topotactic transformation, which is easily controlled by varying the calcining temperature. The textural characteristics of Co3O4 products have strong positive effects on their electrochemical properties as electrode materials in lithium-ion batteries. The obtained porous Co3O4 nanoplatelets exhibit a low initial irreversible loss (18.1%), ultrahigh capacity, and excellent cyclability. For example, a reversible capacity of 900 mAh g−1 can be maintained after 100 cycles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 55, Issue 16, 30 June 2010, Pages 4805–4811
نویسندگان
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