کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7725947 | 1497854 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A multi-electron redox mediator for redox-targeting lithium-sulfur flow batteries
ترجمه فارسی عنوان
یک واسطه مجدد چند الکترونی برای باتری های لیتیوم-سولفور با لیتوگرافی هدف قرار دادن مجدد
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
The lithium-sulfur flow battery (LSFB) is a new addition to the rechargeable lithium flow batteries (LFBs) where sulfur or a sulfur compound is used as the cathode material against the lithium anode. We report here our evaluation of an organic sulfide - dimethyl trisulfide (DMTS), as 1) a catholyte of a LFB and 2) a multi-electron redox mediator for discharging and charging a solid sulfur cathode without any conductive additives. The latter configuration is also known as the redox-targeting lithium-sulfur flow battery (RTLSFB). The LFB provides an initial discharge capacity of 131.5â¯mAh gâ1DMTS (1.66â¯Aâ¯h Lâ1), which decreases to 59â¯mAh gâ1DMTS (0.75â¯Aâ¯h Lâ1) after 40 cycles. The RTLSFB delivers a significantly higher application performance - initial discharge capacity of 1225.3â¯mAh gâ1sulfur (3.83â¯Aâ¯h Lâ1), for which 1030.9â¯mAh gâ1sulfur (3.23â¯Aâ¯h Lâ1) is still available after 40 cycles. The significant increase in the discharge and charge duration of the LFB after sulfur addition indicates that DMTS is better used as a redox mediator in a RTLSFB than as a catholyte in a LFB.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 378, 28 February 2018, Pages 418-422
Journal: Journal of Power Sources - Volume 378, 28 February 2018, Pages 418-422
نویسندگان
Guochun Li, Liuqing Yang, Xi Jiang, Tianran Zhang, Haibin Lin, Qiaofeng Yao, Jim Yang Lee,