التفاصيل البيبلوغرافية
| العنوان: |
Li 5 AlO 4 ‑Assisted Low-Temperature Sintering of Dense Li 7 La 3 Zr 2 O 12 Solid Electrolyte with High Critical Current Density |
| المؤلفون: |
Hao Zhou, Yongjian Zhou, Xiaoyi Li, Xiao Huang, Bingbing Tian |
| سنة النشر: |
2024 |
| المجموعة: |
Smithsonian Institution: Figshare |
| مصطلحات موضوعية: |
Cell Biology, Biotechnology, Immunology, Marine Biology, Infectious Diseases, Plant Biology, Chemical Sciences not elsewhere classified, sup >+, relatively low temperatures, 7 × 10, 150 ° c, 7 , 4 , 3 , 12 , upon liquid electrolyte, based commercial batteries, li symmetric cells, excessive li sintered, 5 , 2 , low ionic conductivity, state batteries, ionic conductivity, solid electrolyte, type li, situ li, high li, dense li, temperature sintering |
| الوصف: |
In recent years, solid electrolytes (SEs) have been developed a lot due to the superior safety of solid-state batteries (SSBs) upon liquid electrolyte-based commercial batteries. Among them, garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) is one of the few SEs that is stable to lithium anode with high Li + conductivity and the feasibility of preparation under ambient air, which makes it a promising candidate for fabricating SSBs. However, high sintering temperature (>1200 °C) prevents its large-scale production, further hindering its application. In this work, the Li 5 AlO 4 sintering aid is proposed to decrease the sintering temperature and modify the grain boundaries of LLZO ceramics. Li 5 AlO 4 generates in situ Li 2 O atmosphere and molten Li–Al–O compounds at relatively low temperatures to facilitate the gas–liquid–solid material transportation among raw LLZO grains, which decreases the densification temperature over 150 °C and strengthens the grain boundaries against lithium dendrites. As an example, Ta-doped LLZO ceramics without excessive Li sintered with 2 wt % Li 5 AlO 4 at 1050 °C delivered high relative density > 94%, an ionic conductivity of 6.7 × 10 –4 S cm –1 , and an excellent critical current density (CCD) of 1.5 mA cm –2 at room temperature. In comparison, Ta-doped LLZO with 15% excessive Li sintered at 1200 °C delivered low relative density < 89%, a low ionic conductivity of ∼2 × 10 –4 S cm –1 , and a poor CCD of 0.5 mA cm –2 . Li symmetric cells and Li-LFP full cells fabricated with Li 5 AlO 4 -assised ceramics were stably cycled at 0.2 mA cm –2 over 2000 h and at 0.8C over 100 cycles, respectively. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Li_sub_5_sub_AlO_sub_4_sub_Assisted_Low-Temperature_Sintering_of_Dense_Li_sub_7_sub_La_sub_3_sub_Zr_sub_2_sub_O_sub_12_sub_Solid_Electrolyte_with_High_Critical_Current_Density/25065922 |
| DOI: |
10.1021/acsami.3c17606.s001 |
| الاتاحة: |
https://doi.org/10.1021/acsami.3c17606.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.313A83CC |
| قاعدة البيانات: |
BASE |