کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6605357 | 1424100 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The electrochemical activity of the nitrosyl ligand in copper nitroprusside: a new possible redox mechanism for lithium battery electrode materials?
ترجمه فارسی عنوان
فعالیت الکتروشیمیایی لیگاند نیتروسیل در نیتروپروسید مس: یک مکانیزم بازسازی مجدد جدید برای مواد الکترود باتری لیتیوم؟
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کلمات کلیدی
آنالوگهای آبی پروس، گروه نیتروسیل، مکانیسم کاهش، مشخصات اپندور،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The unconventional redox mechanism of copper nitroprusside in the electrochemical reaction with lithium is studied by a wide range of techniques. After a simple and reproducible synthesis, pristine copper nitroprusside is characterized using a wide range of techniques. The material is formulated and electrochemically tested in coin cells to explore its electrochemical signature and cyclability. Multiple redox processes involving both Fe and Cu centres are identified at an early stage and further investigated by operando XAFS. Moreover, operando FTIR unveils the unexpected participation of the nitrosyl ligand in the electrochemical reaction. A gradual and irreversible transformation of the material, also reported by operando Mössbauer spectroscopy, occurs in the first cycles. Then, the material is able to withstand several electrochemical cycles without efficiency loss, even though no optimization on formulation has been carried out. Altogether, the nitrosyl group is electrochemically active beyond metals' centres, giving as result a remarkable increase in capacity compared to other analogue compounds. We thus believe this study may open the way to further research on other electroactive nitrosyl-containing materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 257, 10 December 2017, Pages 364-371
Journal: Electrochimica Acta - Volume 257, 10 December 2017, Pages 364-371
نویسندگان
Angelo Mullaliu, Moulay-Tahar Sougrati, Nicolas Louvain, Giuliana Aquilanti, Marie-Liesse Doublet, Lorenzo Stievano, Marco Giorgetti,