التفاصيل البيبلوغرافية
| العنوان: |
An ion-selective separator suppresses polysulfides shuttle for advanced lithium–sulfur batteries. |
| المؤلفون: |
Mao, Huajin1 (AUTHOR) maohuajincw@163.com, Yi, Lijuan2 (AUTHOR), Li, Wanning3 (AUTHOR) |
| المصدر: |
Journal of Applied Electrochemistry. Jan2025, Vol. 55 Issue 1, p53-62. 10p. |
| مصطلحات موضوعية: |
*POLYSULFIDES, *LITHIUM-ion batteries, *PHYSICAL & theoretical chemistry, *ZEOLITES, *CATHODES, *STORAGE batteries |
| مستخلص: |
The lithium–sulfur (Li–S) battery exhibits a high energy capacity that significantly substitutes that of current Li-ion batteries. However, it suffers from severe soluble polysulfide shuttling. Here, we report a zeolite/carbon/Nafion-modifed PP (ZSM/C/Nafion@PP) separator to inhibit soluble polysulfide shuttling and improve Li-ion transfer. We demonstrate that the ZSM/C/Nafion@PP separator functions as an ion-selective barrier in Li–S batteries. It facilitates the rapid transport of Li-ions while effectively preventing the migration of polysulfides to the Li metal anode, utilizing a size-exclusion mechanism. As a result, the Li–S battery with the ZSM/C/Nafion@PP separator features a high initial discharge capacity, superior cycling stability (with a low-capacity decay rate of 0.059% per cycle over 600 cycles at 1 C), and rate performance (954 mA g−1 at 2 °C). Moreover, the Li–S battery with a high S loading cathode (5.6 mg cm−2) and low E/S ratio (6.3 μL mg−1) displays a high initial discharge capacity of 966 mA g−1 and superior cycling stability over 200 cycles at 0.5 °C. This work shows the potential for ZSM-based materials as functional coatings for highly stable Li–S batteries. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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