{"id":15119,"date":"2025-02-26T08:37:26","date_gmt":"2025-02-25T23:37:26","guid":{"rendered":"https:\/\/www.mecc-nano.com\/?p=15119"},"modified":"2025-02-26T08:39:55","modified_gmt":"2025-02-25T23:39:55","slug":"development-of-nanofiber-membranes-with-dual-threshold-effect-to-suppress-zinc-dendrites","status":"publish","type":"post","link":"https:\/\/mecc-jp.com\/nano\/technology\/15119\/","title":{"rendered":"Development of Nanofiber Membranes with Dual-Threshold Effect to Suppress Zinc Dendrites"},"content":{"rendered":"\n
Aqueous Zinc-Ion Batteries (AZIBs) have recently gained attention as an eco-friendly, safe, and cost-effective energy storage technology. However, the growth of zinc dendrites and side reactions during repeated charge-discharge cycles remain significant challenges, limiting battery lifespan and efficiency.<\/p>\n\n\n\n
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\ud83e\uddea Latest Research Findings<\/strong><\/h3>\n\n\n\n
A research team led by Professor Yong Liu from Beijing University of Chemical Technology, Professor Ce Wang from Jilin University, and Professor Ping Hu from Tsinghua University published a paper in Advanced Functional Materials<\/em> titled “Spatial and Electrostatic Dual-Confinement in Hierarchical Hollow Bi-Bi\u2082O\u2083@Carbon Nanofibers for Dendrite Suppression and Side Reaction Mitigation in Aqueous Zinc-Ion Batteries.”<\/strong> This study introduces a novel AZIB anode material fabricated using electrospinning, featuring Bi-Bi\u2082O\u2083-loaded carbon nanofibers (Bi-Bi\u2082O\u2083@CNF) with a hierarchical hollow structure and grooved surface, achieving the following:<\/p>\n\n\n\n
\u2705 Suppression of Zinc Dendrite Growth<\/strong> \u2705 Reduction of Side Reactions<\/strong> \u2705 Mitigation of Battery Polarization<\/strong><\/p>\n\n\n\n
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Figure 1. Fabrication Process of Bi-Bi\u2082O\u2083@CNF Composite Material via Electrospinning<\/p>\n\n\n\n
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\u2699\ufe0f Structure and Properties of Bi-Bi\u2082O\u2083@CNF Composite Material<\/strong><\/h3>\n\n\n\n
The unique structure and material properties of Bi-Bi\u2082O\u2083@CNF create a “Spatial & Electrostatic Dual-Confinement Effect”<\/strong>, enabling uniform zinc deposition on the nanofiber surface and suppressing dendrite formation. Compared to a pure zinc anode, this material demonstrated reduced ohmic resistance, suppressed hydrogen evolution reactions, and alleviated polarization.<\/p>\n\n\n\n
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Coulombic Efficiency and Cycle Stability:<\/strong> Maintained 73% capacity even after 1,000 charge-discharge cycles.<\/li>\n\n\n\n
High Current Density Performance:<\/strong> Exhibited excellent capacity retention at a high current density of 1,000 mA\u00b7g\u207b\u00b9.<\/li>\n<\/ul>\n\n\n\n
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Figure 2. Electrochemical Performance of Bi-Bi\u2082O\u2083@CNF and CNF Half-Cells at Current Densities of 5 mA\u00b7cm\u207b\u00b2 and 10 mA\u00b7cm\u207b\u00b2<\/p>\n\n\n\n
Comparative experiments evaluated the performance of Bi-Bi\u2082O\u2083@CNF and conventional CNF (carbon nanofibers) under current densities of 5 mA\u00b7cm\u207b\u00b2 and 10 mA\u00b7cm\u207b\u00b2. The results showed that Bi-Bi\u2082O\u2083@CNF exhibited significantly higher capacity retention and charge-discharge efficiency.<\/p>\n\n\n\n
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\ud83d\udca1 Applications and Future Prospects<\/strong><\/h3>\n\n\n\n
This study presents a novel approach to overcoming performance degradation caused by zinc dendrites in AZIBs, laying the foundation for the design of next-generation high-performance and safe battery materials. Future applications include electric vehicles, renewable energy storage systems, and various other fields.<\/p>\n\n\n\n
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