التفاصيل البيبلوغرافية
| العنوان: |
Cerium Oxysulfide with O–Ce–S Bindings for Efficient Adsorption and Conversion of Lithium Polysulfide in Li–S Batteries |
| المؤلفون: |
Lianshan Sun, Kai Li, Jipeng Fu, Bingbing Tian, Chunli Wang, Huaming Li, Limin Wang |
| سنة النشر: |
2021 |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Physiology, Sociology, Plant Biology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, XPS, sulfur oxide compounds, LiPS, carrier, Ce 2 O 2 S, one-facile NaCl-template method, adsorption, CeO 2, DFT, Li 2 S 6, socio |
| الوصف: |
Understanding of adsorption and kinetic conversion of polysulfide lithium (LiPSs) in Li–S batteries is quite crucial for the design of efficient effective sulfur carriers. Herein, based on the possible interactions with LiPSs, Ce 2 O 2 S with unique O–Ce–S bindings is proposed to be used as a promising carrier additive and a 2D Ce 2 O 2 S/C composite is synthesized via a one-facile NaCl-template method and subsequent sulfuration under 700 °C. The 2D Ce 2 O 2 S/C exhibits a stronger adsorption capability than CeO 2 /C through the adsorption test for Li 2 S 6 . Combined with XPS and DFT results, the superiority is mainly originated from the formation of S–S and Li–S bonds between LiPSs and the lattice S on the surface of Ce 2 O 2 S. The 2D Ce 2 O 2 S/C composite also exhibits a better catalytic ability than CeO 2 according to the change of the free energies of the polysulfides during the discharge process, which coincides with the lower oxidation potential for Li 2 S 2 /Li 2 S transition by cyclic voltammetry. Resultantly, the cathodes using the Ce 2 O 2 S/C composite as a carrier manifest an enhanced rate and cycling performances. Hence, our work paves a phenomenon wherein Ce 2 O 2 S with O–Ce–S bindings is more beneficial to improve the cycling stability of Li–S batteries than CeO 2 containing single Ce–O bonds, which may be also suitable for other kinds of metallic sulfur oxide compounds. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://doi.org/10.1021/acs.inorgchem.1c01184.s001 |
| DOI: |
10.1021/acs.inorgchem.1c01184.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.inorgchem.1c01184.s001 |
| Rights: |
undefined |
| رقم الانضمام: |
edsbas.B60DF84B |
| قاعدة البيانات: |
BASE |