کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6602318 | 1424076 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
X-ray absorption near edge structure analysis of the charge-discharge mechanisms of dithiobiuret polymer used as a high-capacity cathode material for lithium-ion batteries
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We investigated the electronic structures of low-molecular-weight dithiobiuret (DTB) compounds in both reduced and oxidized states along with those of a DTB polymer in the discharged and charged states using X-ray absorption near edge structure (XANES) measurements. DTB is a simple and lightweight organosulfur molecule with two neighboring tautomeric thiol/thione groups (-SH/>CS) that can form disulfide (S-S) bonds by reversible oxidative cyclization. The DTB polymer, composed of alternating DTB and phenylene (Ph) units, exhibited a high capacity (about 260â¯mAâ¯hâ¯gâ1) without any significant degradation in the charge and discharge cycle characteristics. Based on XANES measurements, charge-discharge experiments, and quantum chemical calculations, we propose that the reactions of two types of redox couples contribute the redox reaction of the DTB polymer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 99-108
Journal: Electrochimica Acta - Volume 281, 10 August 2018, Pages 99-108
نویسندگان
Hiroshi Uemachi, Yuske Tamenori, Tetsuya Itono, Takashi Masuda, Tatsuya Shimoda, Akihiko Fujiwara,