کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6602478 | 1424076 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
S0.87Se0.13/CPAN composites as high capacity and stable cycling performance cathode for lithium sulfur battery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
S0.87Se0.13/CPAN (carbonized polyacrylonitrile) composites material was synthesized by annealing the mixture of S (sulfur), Se (selenium) and PAN directly at 400â¯Â°C. The prepared composites was used as high capacity and stable cycling performance cathode for lithium sulfur battery. It delivers a specific capacity of 1210â¯mAh gâ1 after 100 cycles at a constant current density of 120â¯mAâ¯gâ1. In addition, it remains 989â¯mAh gâ1 after 200 cycles at a current density of 300â¯mAâ¯gâ1 with ultralow capacity fading of 0.025% per cycle. Meantime, the S0.87Se0.13/CPAN cathode exhibits extremely low self-discharge behavior. The superior electrochemical performance of S0.87Se0.13/CPAN composites should be ascribed to high S/Se ratio in S0.87Se0.13/CPAN composites and good conductivity brought by the addition of Se, which make full use of high capacity of S. Moreover, the chemical bonding between Se and S, as well as the chemical bonding between S0.87Se0.13 and CPAN decrease the loss of active material. This easy one-step synthesis procedure offers a feasible new route for the development of sulfide-based cathode material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 789-795
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 789-795
نویسندگان
Tiancheng Zhu, Ying Pang, Yonggang Wang, Congxiao Wang, Yongyao Xia,