کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5431482 1398022 2018 8 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Nitrogen and sulfur dual-doped carbon films as flexible free-standing anodes for Li-ion and Na-ion batteries
ترجمه فارسی عنوان
فیلم های کربن دوپ شده دوتایی با نیتروژن و گوگرد در آندهای ایستاده آزاد انعطاف پذیر برای باتری های Na-ion و Li-ion
کلمات کلیدی
فیلم؛ آند مستقل؛ دوپ شده دوتایی؛ باتری لیتیوم یون؛ باتری سدیم یون؛
Film; Free-standing anode; Dual-doped; Lithium-ion battery; Sodium-ion battery;
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی

Heteroatom doping is considered to be one of the most effective approaches to improve the electrochemical activity of carbon-based electrode materials for both Li-ion batteries (LIBs) and Na-ion batteries (SIBs) due to introduction of unbalanced electron atmosphere and enlarged interlayers of carbon materials. Here, we present nitrogen and sulfur dual-doped flexible carbon (NSC) film as a promising free-standing anode for stable high-power and high-energy LIBs or SIBs. The NSC film delivers high reversible capacities of 965.7 mAh g−1 in LIBs and 520.1 mAh g−1 in SIBs at a current density of 100 mA g−1. Particularly, the film electrodes exhibit excellent high-rate capability and remarkable long-term cyclability. For instance, as a LIBs anode, the NSC film remained a high capacity of 357.2 mAh g−1 at 2.0 A g−1 (∼10 min to full charge) after 2000 cycles; even in SIBs, a capacity of 155 mAh g−1 can also be reached at 1.0 A g−1. It is believed that the interconnected conducting structure of carbon backbones, heteroatomic defects and increased carbon interlayers distance by stable SC and NC bonds are beneficial to ultrafast ion diffusion and electron transport, making the NSC film become a high performance free-standing anode for LIBs or SIBs application.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 126, January 2018, Pages 9-16
نویسندگان
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