کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6602738 | 1424080 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Negative electrode materials of molybdenum nitride/N-doped carbon nano-fiber via electrospinning method for high-performance supercapacitors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To widen the practical application of supercapacitors in acid electrolyte, carbon/molybdenum nitride (C/MoxN) nanofibers are synthesized via combination of electrospinning method and thermal treatment in mixed gas atmosphere of N2 and NH3. When the mass fraction of ammonium molybdate of 1.13â¯wt.% is added in the precursor mixture solution, as-prepared C/MoxN composite shows the nanofibers of about 200â¯nm diameter with MoxN nanoparticles uniformly embedded in the N-doped carbon substrate, and delivers a specific capacitance of 251â¯Fâ¯gâ1. Three types of supercapacitor devices of PANI||C/MoxN, AC||C/MoxN and C/MoxN||C/MoxN are configured in acid electrolyte. The asymmetric supercapacitor of PANI||C/MoxN shows a maximum energy density of 14.1â¯Wh kgâ1 and power density of 312â¯Wâ¯kgâ1, which was larger than those of AC||C/MoxN device (12â¯Wh kgâ1, and 325â¯Wâ¯kgâ1) and symmetric supercapacitors of C/MoxN||C/MoxN device (4.51â¯Wh kgâ1, and 250â¯Wâ¯kgâ1). The C/MoxN||C/MoxN device exhibits good cycle life of specific capacitance retention of 78.6% at 2â¯Aâ¯gâ1 after 15, 000 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 277, 1 July 2018, Pages 41-49
Journal: Electrochimica Acta - Volume 277, 1 July 2018, Pages 41-49
نویسندگان
Yongtao Tan, Lei Meng, Yanqin Wang, Wenju Dong, Lingbin Kong, Long Kang, Fen Ran,