تقرير
A general Lewis acidic etching route for preparing MXenes with enhanced electrochemical performance in non-aqueous electrolyte
| العنوان: | A general Lewis acidic etching route for preparing MXenes with enhanced electrochemical performance in non-aqueous electrolyte |
|---|---|
| المؤلفون: | Li, Youbing, Shao, Hui, Lin, Zifeng, Lu, Jun, Persson, Per O. A., Eklund, Per, Hultman, Lars, Li, Mian, Chen, Ke, Zha, Xian-Hu, Du, Shiyu, Rozier, Patrick, Chai, Zhifang, Raymundo-Piñero, Encarnacion, Taberna, Pierre-Louis, Simon, Patrice, Huang, Qing |
| سنة النشر: | 2019 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Applied Physics, Condensed Matter - Materials Science |
| الوصف: | Two-dimensional carbides and nitrides of transition metals, known as MXenes, are a fast-growing family of 2D materials that draw attention as energy storage materials. So far, MXenes are mainly prepared from Al-containing MAX phases (where A = Al) by Al dissolution in F-containing solution, but most other MAX phases have not been explored. Here, a redox-controlled A-site-etching of MAX phases in Lewis acidic melts is proposed and validated by the synthesis of various MXenes from unconventional MAX phase precursors with A elements Si, Zn, and Ga. A negative electrode of Ti3C2 MXene material obtained through this molten salt synthesis method delivers a Li+ storage capacity up to 738 C g-1 (205 mAh g-1) with high-rate performance and pseudocapacitive-like electrochemical signature in 1M LiPF6 carbonate-based electrolyte. MXene prepared from this molten salt synthesis route offer opportunities as high-rate negative electrode material for electrochemical energy storage applications. |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1909.13236 |
| رقم الأكسشن: | edsarx.1909.13236 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |