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Amino-functionalized Ti3C2Tx/glass fiber composite separators for high performance aqueous zinc-Ion batteries
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DOI:10.1007/s10800-026-02440-3.png)
Abstract
En 中文
Aqueous zinc-ion batteries have emerged as a highly promising energy storage technologies due to their abundant resources, high safety, and environmental friendliness. However, the cycle stability of Aqueous zinc-ion batteries is severely constrained by zinc dendrite growth on the anode and accompanying side reactions in the electrolyte. Mitigating this effect is crucial for the large-scale application of zinc-ion batteries, and separator modification is regarded as an effective strategy to address these challenges. Here, a method of modifying the glass fiber composite separator with amino-functionalized MXene (Ti3C2Tx) is attempted to alleviate these problems. The modified Ti3C2Tx was uniformly loaded on the surface of glass fiber separator by vacuum filtration to fabricate the composite separator. Systematic characterization and electrochemical testing revealed that the composite separator with an optimal coating loading of 2 mg cm(-2) significantly enhanced battery performance. The cycle life of Zn//Zn symmetric cells were markedly extended at 5 mA cm(-2), and specifically, reached 250 h at 0.5 mA cm(-2), which is about 8 times longer than that of the unmodified glass fiber separator (similar to 30 h). Furthermore, the Zn parallel to MnO2 all-cell based on this composite separator also exhibited a higher capacity retention rate after 1200 cycles compared to the blank separator group. This provides an effective research direction for the design of high-performance Aqueous zinc-ion batteries separators. [GRAPHICS] .
Keywords:
Aqueous zinc-ion batteries
Composite separator
Protective layer
Ti3C2Tx
Journal
IF:
3
Papers:
963
Citations:
9.0K
