Temperature-Induced Morphology Control of Fe-Polydopamine Coordination Complexes and Their Derivatives for Energy Storage Applications.

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-10-02 DOI:10.1021/acs.nanolett.5c03768

Incheol Heo,Min Seok Kang,Jaeseong Kim,Chanyoung Lee,Hee Soo Kim,Dong-Ha Lim,Won Cheol Yoo

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Abstract

Controlling the morphology of organic-inorganic complexes at the nanometer scale is crucial for electrochemical applications. We present a novel method for controlling Fe-polydopamine (Fe-PD) coordination complexes into rod, urchin, and hollow structures at high (80-90 °C), medium (40-60 °C), and low (0-10 °C) synthesis temperatures, respectively. Morphological evolution was driven by the balance between oriented and random polymerization pathways, with hollow structures formed through random growth followed by selective inner-core etching. H- and U-Fe-PDs were converted to H- and U-Fe@C composites after carbonization. H-Fe@C exhibited superior performance in lithium-metal anodes, achieving stable cycling for over 2500 h with exceptional overpotentials as low as 7.4 mV and 76% capacity retention after 1000 cycles, significantly outperforming U-Fe@C due to enhanced mass transport through the thin carbon shell (∼50 nm). This temperature-controlled strategy provides a versatile approach for designing morphology-driven materials for advanced energy storage.

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铁-聚多巴胺配合物及其衍生物的温度诱导形态控制及其储能应用。

在纳米尺度上控制有机-无机配合物的形态是电化学应用的关键。我们提出了一种在高（80-90°C）、中（40-60°C）和低（0-10°C）合成温度下将fe -聚多巴胺（Fe-PD）配合物分别控制成棒状、海胆状和空心结构的新方法。形态进化是由定向和随机聚合途径之间的平衡驱动的，通过随机生长和选择性内核蚀刻形成空心结构。H-和u - fe - pd经碳化后转化为H-和U-Fe@C复合材料。H-Fe@C在锂金属阳极中表现出优异的性能，在超过2500小时的稳定循环中，异常过电位低至7.4 mV，在1000次循环后保持76%的容量，显著优于U-Fe@C，这是由于通过薄碳壳（~ 50 nm）增强了质量传递。这种温控策略为设计用于先进储能的形态驱动材料提供了一种通用的方法。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.