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Your search keyword '"Li, Sai"' showing total 285 results
Start Over Author "Li, Sai" Publisher elsevier b.v.
285 results on '"Li, Sai"'

34. Fabrication of bamboo-inspired continuous carbon fiber-reinforced SiC composites via dual-material thermally assisted extrusion-based 3D printing.

Author

Li, Sai, Zhang, Haitian, Lu, Zhongliang, Cao, Fusheng, Wang, Ziyao, Liu, Yan, Zhu, Xiaohui, Ning, Shuai, Miao, Kai, Qiu, Shaoyu, and Li, Dichen

Subjects
FIBER-reinforced ceramics, ELECTROMAGNETIC wave absorption, BIOMIMETICS, FIBER-matrix interfaces, THREE-dimensional printing, CERAMIC-matrix composites
Abstract

• Bamboo-inspired continuous fiber-reinforced ceramic matrix composites are developed using a novel dual-material 3D printing method. • Bamboo-inspired Cf/SiC composites deliver outstanding fractur toughness. • The effects of the composition and microstructure on performance are studied through various analytical characterization techniques. Ceramic matrix composites (CMCs) structural components encounter the dual challenges of severe mechanical conditions and complex electromagnetic environments due to the increasing demand for stealth technology in aerospace field. To address various functional requirements, this study integrates a biomimetic strategy inspired by gradient bamboo vascular bundles with a novel dual-material 3D printing approach. Three distinct bamboo-inspired structural configurations Cf/SiC composites are designed and manufactured, and the effects of these different structural configurations on the CVI process are analyzed. Nanoindentation method is utilized to characterize the relationship between interface bonding strength and mechanical properties. The results reveal that the maximum flexural strength and fracture toughness reach 108.6 ± 5.2 MPa and 16.45±1.52 MPa m1/2, respectively, attributed to the enhanced crack propagation resistance and path caused by the weak fiber-matrix interface. Furthermore, the bio-inspired configuration enhances the dielectric loss and conductivity loss, exhibiting a minimum reflection loss of −24.3 dB with the effective absorption band of 3.89 GHz. This work introduces an innovative biomimetic strategy and 3D printing method for continuous fiber-reinforced ceramic composites, expanding the application of 3D printing technology in the field of CMCs. [Display omitted] [ABSTRACT FROM AUTHOR]

Published
2025
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37. Recent advances in the development of single atom catalysts for oxygen evolution reaction.

Author

Li, Sai, Xin, Zeyi, Luo, Yue, Pan, Jianxin, Liao, Guangning, Li, Qi, Sun, Youyi, Feng, Zhiming, and Tan, Rui

Subjects
*OXYGEN evolution reactions, *CHEMICAL reactions, *CATALYTIC activity, *HYDROGEN production, *CATALYSTS, *PLATINUM
Abstract

Recent advances in single atom catalysts (SACs) have demonstrated significant potential for enhancing catalytic performance in various chemical reactions due to their unique properties, such as maximized atom utilization, uniform active sites, and lower metal loading. These advantages lead to enhanced catalytic activity, stability, and efficiency, making SACs a promising alternative to traditional catalysts. This review comprehensively covers the fundamentals, synthesis methods, and recent advances in applications of SACs for the oxygen evolution reaction (OER), with a particular focus on their advantages over traditional catalysts, detailing novel carrier materials and different metal-based SACs, including platinum group elements and nonprecious metals. The discussion section evaluates the catalytic activity, efficiency, stability, scalability, and simulation aspects of SACs. Concluding with insights into future research directions, this review highlights the transformative potential of SACs in catalysis and their promising outlook for future advancements. [ABSTRACT FROM AUTHOR]

Published
2024
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