کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7725103 | 1497842 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
S-containing copolymer as cathode material in poly(ethylene oxide)-based all-solid-state Li-S batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: S-containing copolymer as cathode material in poly(ethylene oxide)-based all-solid-state Li-S batteries S-containing copolymer as cathode material in poly(ethylene oxide)-based all-solid-state Li-S batteries](/preview/png/7725103.png)
چکیده انگلیسی
Inverse vulcanization copolymers (p(S-DVB)) from the radical polymerization of elemental sulfur and divinylbenzene (DVB) have been studied as cathode active materials in poly(ethylene oxide) (PEO)-based all-solid-state Li-S cells. The Li-S cell comprising the optimized p(S-DVB) cathode (80:20 w/w S/DVB ratio) and lithium bis(fluorosulfonyl)imide/PEO (LiFSI/PEO) electrolyte shows high specific capacity (ca. 800â¯mAh gâ1) and high Coulombic efficiency for 50 cycles. Most importantly, polysulfide (PS) shuttle is highly mitigated due to the strong interactions of PS species with polymer backbone in p(S-DVB). This is demonstrated by the stable cycling of the p(S-DVB)-based cell using lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)/PEO electrolyte, where successful charging cannot be achieved even at the first cycle with plain elemental S-based cathode material due to the severe PS shuttle phenomenon. These results suggest that inverse vulcanization copolymers are promising alternatives to elemental sulfur for enhancing the electrochemical performance of PEO-based all-solid-state Li-S cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 390, 30 June 2018, Pages 148-152
Journal: Journal of Power Sources - Volume 390, 30 June 2018, Pages 148-152
نویسندگان
Ismael Gracia, Hicham Ben Youcef, Xabier Judez, Uxue Oteo, Heng Zhang, Chunmei Li, Lide M. Rodriguez-Martinez, Michel Armand,