Decoration by dual-phase Li2ZrO3 islands with core–shell structures enhances the electrochemical performance of high-voltage LiNi0.5Mn1.5O4
| العنوان: | Decoration by dual-phase Li2ZrO3 islands with core–shell structures enhances the electrochemical performance of high-voltage LiNi0.5Mn1.5O4 |
|---|---|
| المؤلفون: | Rui Zhao, Tinghua Xu, Ying Bai, Linsong Li, Yuncai Li, Huiling Zhao, Caiyan Yu, Du Pan |
| المصدر: | Applied Physics Letters. 116:021601 |
| بيانات النشر: | AIP Publishing, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Physics and Astronomy (miscellaneous), Spinel, High voltage, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, Cathode, law.invention, Amorphous solid, Chemical engineering, law, 0103 physical sciences, engineering, Fast ion conductor, 0210 nano-technology, Hybrid material, Current density |
| الوصف: | A high-voltage LiNi0.5Mn1.5O4 (LNMO) cathode was modified by Li2ZrO3 (LZO), a fast ion conductor with a unique core–shell crystalline-amorphous structure. The electrochemical results indicated a greatly improved capacity retention for LNMO-1LZO compared to LNMO. Moreover, the rate performance (100 mAh·g−1) of LNMO-1LZO at a high current density of 10 C was superior to those of pristine LNMO and other modified samples. The enhanced electrochemical performance was ascribed to the generation of dual-phase island-shaped LZO with an interior crystalline phase, which accelerated Li+ diffusion, and an exterior amorphous shell, which enhanced interfacial compatibility and stability without influencing the intrinsic spinel structure of bulk LNMO. Thus, modification with this hybrid material has the remarkable synergetic effect of enhancing interfacial Li+ diffusion and stabilizing the interfacial structure during cycling. |
| تدمد: | 1077-3118 0003-6951 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::802bc811c7db262c5e73d7dd2c432bdeTest https://doi.org/10.1063/1.5130432Test |
| رقم الانضمام: | edsair.doi...........802bc811c7db262c5e73d7dd2c432bde |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10773118 00036951 |
|---|