کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6617652 | 459633 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new chemical route for the synthesis of βâ²-LixV2O5 for use as a high performance cathode
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The high temperature vanadium pentoxide phase, βâ²-LixV2O5, was synthesized via a new chemical synthesis involving the evolution of vanadium oxides from the 600 °C heat treatment of the pure LiVS2 in air. By employing this method of synthesis, well-crystallized, rod-shaped βâ²-LixV2O5 particles 20-30 μm in length and 3-6 μm in width were obtained. Moreover, the surface of βâ²-LixV2O5 particles was found to be coated by an amorphous vanadium oxysulfide film (â¼20 nm in thickness). In contrast to a low temperature vanadium pentoxide phase (LixV2O5), the electrochemical intercalation of lithium into the βâ²-LixV2O5 was fully reversible where 0.0 < x < 2.0, and it delivered a capacity of 310 mAh gâ1 at a current rate of 0.07 C between 1.5 V and 4 V. Good capacity retention of more than 88% was also observed after 50 cycles even at a higher current rate of 2 C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 105, 30 August 2013, Pages 403-411
Journal: Electrochimica Acta - Volume 105, 30 August 2013, Pages 403-411
نویسندگان
Nina Mahootcheian Asl, Jung-Hyun Kim, Wen Chao Lee, Zhongyi Liu, Peng Lu, Youngsik Kim,