Electroconductive high-entropy metallic oxide ceramic composites with outstanding water evaporation ability and biocompatibility

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2024-06-25 DOI:10.1007/s42114-024-00916-4

Chong Wang, Jie Pan, Fucong Lyu, Yunchen Long, Hongkun Li, Chenghao Zhao, Lu Yao, Zebiao Li, Weihui Ou, Binbin Zhou, Jie Shen, Jingchen Wang, Yaxin Xu, Zhengyi Mao, Yingxian Chen, Xufen Xiao, Gemeng Liang, Ni Zeng, Jian Lu, Yang Yang Li

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Abstract

Electroconductive ceramics were a class of materials that exhibited metal-like conductivity while also retaining the beneficial properties of ceramics. Currently, they were ceramic composites generally fabricated by sintering ceramic powders with conductive additives such as graphene or single-wall carbon nanotubes, which were expensive and often suffered from poor dispersibility and low performance. To address these issues, we developed a novel and facile sol–gel approach for synthesizing electroconductive ceramic composites. In this work, we have successfully synthesized high-entropy metallic (Ti, Mg, Al, Zr) oxide ceramic composites using cost-effective organic metallic coupling agents in a “one-pot” synthesis. Subsequent thermal sintering produced the ceramic composites with dramatically reduced resistivity through the creation of oxygen vacancies and homogeneous in situ graphitization. The resulting electroconductive ceramic composites also possessed remarkable mechanical properties, photothermal conversion ability, and biocompatibility. To the best of our knowledge, this was the first time that electroconductive high-entropy ceramic composites have been synthesized using organic metallic coupling agents. This work offered new potential for the fields of electro-discharge machining (EDM) processing, electronics, energy, solar-driven photothermal engineering, and biomedical industries, allowing easy and inexpensive production of electroconductive ceramic composites with unique properties.

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具有出色水分蒸发能力和生物相容性的导电高熵金属氧化物陶瓷复合材料

导电陶瓷是一类具有类似金属导电性的材料，同时还保留了陶瓷的有益特性。目前，它们通常是通过烧结陶瓷粉末与石墨烯或单壁碳纳米管等导电添加剂而制成的陶瓷复合材料，价格昂贵，而且往往分散性差、性能低下。为了解决这些问题，我们开发了一种新颖而简便的溶胶-凝胶法来合成导电陶瓷复合材料。在这项工作中，我们采用经济有效的有机金属偶联剂，通过 "一锅 "合成法成功合成了高熵金属（钛、镁、铝、锆）氧化物陶瓷复合材料。随后的热烧结通过产生氧空位和均匀的原位石墨化，使陶瓷复合材料的电阻率显著降低。由此产生的导电陶瓷复合材料还具有显著的机械性能、光热转换能力和生物相容性。据我们所知，这是首次使用有机金属偶联剂合成导电高熵陶瓷复合材料。这项工作为放电加工（EDM）、电子、能源、太阳能驱动的光热工程和生物医学等领域提供了新的潜力，使具有独特性能的导电陶瓷复合材料的生产变得简单而廉价。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.