Citation: Yuxin LIAO, Xianheng SHEN, Li CHEN, Yujia TIAN, Zhihong LUO, Xiaoli CHEN, Jiaojing SHAO. Amino-modified F-containing silica slag for the construction of multi-functional interlayer and the inhibitory effect on the polysulfide shuttle effect in lithium-sulfur batteries[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(2): 375-386. doi: 10.11862/CJIC.20250213 shu

Amino-modified F-containing silica slag for the construction of multi-functional interlayer and the inhibitory effect on the polysulfide shuttle effect in lithium-sulfur batteries

School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China

Corresponding author: Jiaojing SHAO, shaojiao_jing@163.com
Received Date: 21 June 2025
Revised Date: 19 December 2025

Figures(6)

Herein, 3-aminopropyltriethoxysilane (APTES) was used to modify F-containing silica slag (SS) by simple grafting and served as a multifunctional barrier layer. The amino group (—NH₂) in the amino-modified SS (NH₂-SS) forms ligand bonds or hydrogen bonds with sulfur ions in lithium polysulfides (LiPSs), thus inhibiting the shuttle effect. Electrochemical analyses demonstrated that lithium-sulfur (Li-S) batteries employing the NH₂-SS interlayer exhibited discharge specific capacities of 1 048 and 789 mAh·g^-1 at 0.2C and 2C, respectively, and even at 4C, the initial discharge specific capacity remained at 590 mAh·g^-1, outperforming the Li-S battery with unmodified SS as the interlayer.
- silica,
- interlayer,
- shuttle effect,
- lithium-sulfur batteries
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