کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767322 | 1424128 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Naphthalene-based Polyimide Derivatives as Organic Electrode Materials for Lithium-ion Batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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![عکس صفحه اول مقاله: Naphthalene-based Polyimide Derivatives as Organic Electrode Materials for Lithium-ion Batteries Naphthalene-based Polyimide Derivatives as Organic Electrode Materials for Lithium-ion Batteries](/preview/png/4767322.png)
چکیده انگلیسی
Two naphthalene-based polyimide derivatives are fabricated through a facile condensation polymerization by 1,4,5,8-naphthalenetetracarboxylic dianhydride (NT) with different two diamines, e.g., urea and ethylenediamine, respectively. Their structures with morphologies are studied and the electrochemical properties are investigated as cathode materials for rechargeable lithium-ion batteries (LIBs). By comparison to NT, the polymers with carbonyl functionalities as electroactive groups show improved stability in electrolyte. The obtained derivative (NOP) from NT and urea with more redox active sites exhibits a higher discharge capacity and better rate performance, which might be attributed to its relatively lower molecule weight of the framework and the introduction of additional carbonyl group inherited from urea unit. It displays an average reversible capacity of 174.5 mAh gâ1 at 20 mA gâ1 and a good rate performance with a high value of 133.5 mAh gâ1 at 500 mA gâ1. With an optimized polymerization conditions, its capacity could remain 153 mAh gâ1 after 60 cycles of charge-discharge processes at 50 mA gâ1, making it a potential material for greener and sustainable electrode for electrochemical storage devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 229, 1 March 2017, Pages 387-395
Journal: Electrochimica Acta - Volume 229, 1 March 2017, Pages 387-395
نویسندگان
Chaoyi Chen, Xin Zhao, Hai-Bei Li, Feng Gan, Junxian Zhang, Jie Dong, Qinghua Zhang,