Optimization of the Synthesis and Compaction Modes of Ca3Co4O9 Oxide Composites with Multilayer Carbon Nanotubes

IF 1.2 4区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Structural Chemistry Pub Date : 2025-05-07 DOI:10.1134/S0022476625040109

A. I. Romanenko, G. E. Chebanova, V. L. Kuznetsov, J. Yao, V. V. Pai, M. V. Drozhzhin, I. N. Katamanin, A. N. Lavrov, S. I. Moseenkov, A. V. Zavorin, W. -B. Su, Y. L. Luk′yanov, H. -C. Wang

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引用次数: 0

Abstract

The Ca₃Co₄O₉ oxides are prepared by Pechini method and solid-phase methods. The compaction is performed by spark plasma sintering, cold pressing followed by explosive compression (explosion method), and by rapid hot pressing. The compaction achieved by the explosion method with the addition of an AlN binder provides the maximum thermoelectric figure of merit ZT_300 K = 0.161 at room temperature. Adding multilayer carbon nanotubes (CNTs) to the oxides prepared by the Pechini method deteriorates the characteristics, and increasing the CNT content in Ca₃Co₄O₉ prepared by the solid-phase method and compacted by rapid hot pressing increases the thermoelectric figure of merit ZT_300 K up to 0.048 in Ca₃Co₄O₉+3 wt.% CNT.

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多层碳纳米管Ca3Co4O9氧化物复合材料的合成及压实模式优化

采用Pechini法和固相法制备了Ca3Co4O9氧化物。压实是通过火花等离子烧结、冷压、爆炸压缩（爆炸法）和快速热压来完成的。通过添加AlN粘结剂的爆炸方法实现的压实在室温下提供了最大的热电系数ZT300 K = 0.161。在Pechini法制备的氧化物中加入多层碳纳米管（CNTs）会使其性能恶化，而在固相法制备的Ca3Co4O9中增加快速热压压的碳纳米管含量，使Ca3Co4O9+ 3wt .%碳纳米管的热电性能值ZT300 K达到0.048。

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来源期刊

Journal of Structural Chemistry 化学-无机化学与核化学

CiteScore

1.60

自引率

12.50%

发文量

142

审稿时长

8.3 months

期刊介绍： Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.