کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5350347 | 1503659 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Potassium-doped copper oxide nanoparticles synthesized by a solvothermal method as an anode material for high-performance lithium ion secondary battery
ترجمه فارسی عنوان
نانوذرات اکسید مس نیکل پتاسیم که به وسیله یک روش حلالیترولیکی به عنوان یک ماده آند برای باتری لیتیوم یونی با کارایی بالا عمل می کنند
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کلمات کلیدی
اکسید مس، پتاسیم، آنود، باتری های یون لیتیوم،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
A simple and efficient approach was developed to synthesize CuO nanoparticles with improved electrochemical performance. Potassium (K+)-doped CuO nanoparticles were synthesized by a simple and cost-effective solvothermal method followed by annealing at 500 °C for 5 h under air atmosphere. For comparison, an undoped CuO sample was also synthesized under the same conditions. X-ray diffraction analysis demonstrates that the K+ ion doping caused no change in the phase structure, and highly crystalline KxCu1âxO1âδ (x = 0.10) powder without any impurity was obtained. As an anode material for a lithium ion battery, the K+-doped CuO nanoparticle electrode exhibited better capacity retention with a reversible capacity of over 354.6 mA h gâ1 for up to 30 cycles at 0.1 C, as well as a high charge capacity of 162.3 mA h gâ1 at a high current rate of 3.2 C, in comparison to an undoped CuO electrode (275.9 mA h gâ1 at 0.1 C and 68.9 mA h gâ1 at 3.2 C). The high rate capability and better cycleability of the doped electrode can be attributed to the influence of the K+ ion nanostructure on the increased electronic conductivity, diffusion efficiency, and kinetic properties of CuO during the lithiation and delithiation process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 305, 30 June 2014, Pages 617-625
Journal: Applied Surface Science - Volume 305, 30 June 2014, Pages 617-625
نویسندگان
Trang Vu Thi, Alok Kumar Rai, Jihyeon Gim, Jaekook Kim,