Article
Materials Science, Ceramics
Bingkun Xu, Qinchuan He, Yiqun Wang, Xuemin Yin
Summary: Hollow porous Ni@SiC nanospheres were successfully constructed by combining a carbothermal reduction preparation strategy and subsequent electroless plating process. The heterogeneous dielectric/magnetic multi-component structure of the nanospheres contributes to their excellent electromagnetic wave absorption properties.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Liang Chai, Yiqun Wang, Nifan Zhou, Yu Du, Xiaodong Zeng, Shiyi Zhou, Qinchuan He, Guanglei Wu
Summary: ZnFe2O4@PHCMS composite material with excellent microwave absorption properties was successfully synthesized in this study, with a maximum adsorption capacity of -51.43 dB. Through mechanisms such as suitable impedance characteristic, dipole polarization, and interfacial polarization, effective electromagnetic wave absorption was achieved.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xiaomeng Guan, Yutao Zhu, Le Yang, Zhihong Yang
Summary: The study presents the synthesis of sulfur-doped porous hollow carbon spheres with excellent EM attenuation performance through controlled chemical etching and sulfur doping processes. This work confirms the potential of sulfur-doped porous hollow carbon spheres as reliable microwave attenuation materials and provides a potential strategy for designing and synthesizing high-performance carbon-based materials with tunable EM properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hao Sun, Xiao Zhang, Feng Yan, Haoran Yuan, Chunling Zhu, Yujin Chen
Summary: The CoS/MnSO4 heterostructure with hollow flower-like structure shows excellent electromagnetic wave absorption performance, attributed to its unique structural features and interfacial polarization at the nanoscale level.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Xueting Li, Wangwang Lei, Jian Wei, Yanbin Zhang, Zongmo Shi
Summary: In this study, lightweight porous SiC/Si3N4 composite nanowires with excellent performance of broadband electromagnetic wave absorption were successfully prepared. These nanowires can be used as lightweight electromagnetic wave absorbers in high-temperature environments.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Ruiling Sun, Guilong Yan, Xunlong Zhang, Zhenyu Li, Jingyu Chen, Li Wang, Yuanpeng Wu, Yiqun Wang, Han Li
Summary: In this study, Fe-ZIF and Fe-ZIF-derived hollow porous carbon nanofibers (Fe-HPCNFs) were prepared, and the electromagnetic wave absorption properties of different carbon nanofibers were systematically studied. The Fe-HPCNFs exhibited the best performance, achieving a minimum RL loss of -46.9 dB at 17.38 GHz with an effective absorption bandwidth of 3 GHz and a thickness of 2.0 mm. Fe-HPCNFs are flexible, ultralightweight, self-supported materials with potential for high-efficiency electromagnetic wave absorption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhibo Zhao, Bo Kang, Jia Xu, Chunling Zhu, Xiaoli Zhang, Xitian Zhang, Yujin Chen
Summary: The study developed a simple method to prepare Ni@NCNT/NCHSs, which have hierarchical and hollow features and exhibit high-efficiency electromagnetic wave absorption performance.
Article
Materials Science, Ceramics
Shuang Wei, Zhicheng Shi, Wenrui Wei, Huanlei Wang, Davoud Dastan, Minghua Huang, Jing Shi, Shougang Chen
Summary: This study successfully prepared ultralight porous carbon hollow nanoboxes with low density and high specific surface area, achieving excellent electromagnetic wave absorption performance in the filler with only 3 wt% inclusion. The material demonstrated impressive absorption performance at 3 wt% and could adjust absorption bandwidth in a wider frequency band by tuning thickness.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Zhongning Xiang, Yiqun Wang, Xuemin Yin, Qinchuan He
Summary: This study prepares porous heterogeneous SiC/SiO2 microspheres using self-assembly technology and carbothermal reduction strategy. The results show that porous heterogeneous SiC/SiO2 microspheres exhibit excellent electromagnetic wave absorption properties, with a wide effective bandwidth and satisfying the comprehensive requirements of efficient EM wave absorption absorbers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Pei Yao, Xingchao Li, Yi Zhang, Ke Ma, Xintao Zhang, Meishuan Li, Jun Zuo, Tongqi Li, Lihai Lin, Chusen Li, Jingjun Xu
Summary: A porous Ti3AlC2/SiC gradient composite with highly interconnective pores and gradient variation of the Ti3AlC2 content was prepared. The electromagnetic wave absorption and shielding performances of the composite were investigated, showing that both the complex permittivity and EMW shielding properties increased with increasing sintering temperature. The porous Ti3AlC2/SiC gradient composite exhibited better performance compared to the conventional SiC foam.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Environmental
Guanjie Zeng, Xin Li, Yanjing Wei, Tong Guo, Xiaozhong Huang, Xuelong Chen, Xiu-Zhi Tang
Summary: The synthesis of porous ceramic materials with in situ grown Si3N4 nanowires via a pyrolysis process significantly enhances mechanical performance and electromagnetic absorption capacity, leading to improved toughness and specific compressive strength of the composite foam. This composite ceramic material shows potential applications in aviation, aerospace, and other extreme environments due to its excellent electromagnetic wave absorption capability, enhanced mechanical properties, low density, and high thermal resistance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
Junjie Qian, Anze Shui, Chao He, Xuan Wang, Mei Cai, Yadi Pu, Ping Hu, Bin Du
Summary: The study successfully prepared SiC nanowires and SiOC/SiCnws/CFs composites with enhanced mechanical performance and tailored electromagnetic wave absorption properties, showing potential application in harsh environments.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Xiaomeng Guan, Zhihong Yang, Yutao Zhu, Lieji Yang, Ming Zhou, Yue Wu, Le Yang, Tianwei Deng, Guangbin Ji
Summary: By successfully doping sulfur into porous hollow carbon spheres, the optimized SPCHS demonstrated excellent absorption properties with a minimum reflection loss of -27.2 dB and an effective bandwidth exceeding 6 GHz at a thickness of 2.25 mm. With a sample filling ratio of only 5 wt% in the paraffin matrix, the SPCHS materials showed great potential in practical applications in EMW absorption.
Article
Chemistry, Physical
Xuechen Liang, Siyu Liu, Sijia Zhong, Shuting Zhang, Xiangwei Meng, Ye Zhang, Meijie Yu, Chengguo Wang
Summary: Modulating the structure and morphology is crucial in creating high-performance electromagnetic absorbing materials. This study successfully obtained porous Fe3O4/carbon hollow microspheres and porous Fe4N/carbon hollow microspheres from Fe-glycerol hollow microspheres. The porous Fe4N/carbon hollow microspheres showed superior electromagnetic wave absorption performance compared to the porous Fe3O4/carbon hollow microspheres. The reasons for this performance improvement include the higher complex permittivity and complex permeability of magnetic Fe4N, as well as the multiple scattering and reflection of electromagnetic waves due to the porous hollow microspherical structure.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Qi Fan, Honglong Xing, Anfeng Zhu, Xiaoli Ji, Ran Shi
Summary: In this study, flowerlike gamma-AlOOH hollow spheres decorated with multi-walled carbon nanotubes were fabricated using a facile hydrothermal method to explore a high-performance microwave absorber with lightweight and thin thickness. The composites exhibited excellent microwave absorption performance due to the unique microstructure and optimal amount of MWCNTs, showing potential for designing novel microwave absorbers.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Ningkun Liu, Lingjun Guo, Gang Kou, Yunyu Li, Xuemin Yin
Summary: By preparing carbon nanotube reinforced pyrocarbon (Ct/C) nanocomposites with high CTEs, the mismatch in the coefficients of thermal expansion (CTE) with thermal barrier coatings (TBCs) can be reduced, improving the durability of the composites in high-temperature environments.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Yanqin Fu, Yulei Zhang, Hui Chen, Xuemin Yin, Jian Zhang, Jia Sun, Qiangang Fu
Summary: The research found that HfC nanowires with a diameter of 200-300 nm could maintain their morphological and structural stability at 2100 degrees Celsius, and the pyrolytic carbon improved their stability under high temperature conditions. This work not only provides a theoretical basis for HfC nanowires reinforced carbon or ceramic-based composites, but also raises deep considerations on the stability of nanomaterials under ultra-high temperature conditions.
Article
Materials Science, Multidisciplinary
Qinchuan He, Hejun Li, Qing Tan, Jinhua Lu, Xuemin Yin
Summary: The particle size of ultra-high temperature ceramics (UHTCs) is critical for the ablation behavior of C/C-UHTCs composites. This study focused on the role of ZrC particle size on the ablation resistance of C/C-SiC-ZrC composites. The results showed that ZrC particles with a size of -1 μm produced a broken oxide coating, indicating unsatisfactory ablation resistance. ZrC particles with a size of -3.8 μm could not form a dense oxide coating, leading to oxygen corrosion. ZrC particles with a size of -2.7 μm promoted the formation of a continuous and viscous oxide coating, delaying oxygen diffusion and resisting airflow scouring.
Article
Chemistry, Physical
Lina Sun, Leilei Zhang, Xuemin Yin, Yeye Liu, Yao Guo, Hongchao Sheng, Xianghui Hou
Summary: Carbon-matrix composites reinforced by Si3N4 nano-wires@pyrolytic carbon nanolayers (Si3N4nws@PyCnls) coupled with hydroxyapatite nanosheets show improved mechanical strength and frictional properties, making them suitable for aerospace and military applications. This study provides a co-reinforcement strategy for effective improvement of mechanical and frictional properties of carbon matrix composites.
JOURNAL OF MATERIOMICS
(2023)
Article
Chemistry, Physical
Liyuan Han, Kezhi Li, Caixiang Xiao, Xuemin Yin, Xuchun Gui, Qiang Song, Fang Ye
Summary: This study focuses on the demand for thermal management materials with excellent electromagnetic interference (EMI) shielding performance in the field of modern electronic devices. By combining vertical edge rich graphene with carbon nanotube sponge, CNT-VG/epoxy composites with enhanced performance were constructed. The obtained composites exhibit improved EMI shielding effectiveness, thermal conductivity, and mechanical strength, demonstrating promising applications in next-generation electronic devices.
Article
Materials Science, Ceramics
Xin Zhang, Qinchuan He, Mingcong Qing, Jie Feng, Zhanpeng Liu, Yiqun Wang, Xuemin Yin
Summary: La2O3 modified C/C-ZrC composites were successfully prepared by precursor infiltration and pyrolysis technique. The ablation resistance of the composites was tested at 1700 and 2400 degrees C in plasma flame. At 2400 degrees C, La2O3 promoted the liquid phase sintering of ZrO2, forming a protective La-Zr-O molten layer. At 1700 degrees C, La2O3 promoted the solid phase sintering of ZrO2, forming an intact La-Zr-O particle-stacked layer, which positively protected the composites.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Zhongning Xiang, Yiqun Wang, Xuemin Yin, Qinchuan He
Summary: This study prepares porous heterogeneous SiC/SiO2 microspheres using self-assembly technology and carbothermal reduction strategy. The results show that porous heterogeneous SiC/SiO2 microspheres exhibit excellent electromagnetic wave absorption properties, with a wide effective bandwidth and satisfying the comprehensive requirements of efficient EM wave absorption absorbers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xuan Wang, Xiping Dong, Xiaochen Feng, Qinhao Shi, Jing Wang, Xuemin Yin, Jiujun Zhang, Yufeng Zhao
Summary: In this work, a new approach is reported to modulate the local structure of P2 materials, which significantly enhances their long cycle performance.
Article
Engineering, Environmental
Liyuan Han, Kezhi Li, Huimin Liu, Yameng Jiao, Xuemin Yin, Hejun Li, Qiang Song, Lehua Qi
Summary: Facing the challenges of heat dissipation and electromagnetic interference in electronics, carbon modified polymer-based composites with significant EMI shielding and thermal management performance were developed. A carbon heterogeneous stacking strategy was proposed to construct all carbon aerogels for modifying epoxy resin, resulting in a hybrid 3D structure of reduced graphene oxide-carbon nanotube-vertical edge-rich graphene with covalent bonding. The designed microstructure of the rGO-CNT-VG skeleton provided plenty of seamlessly bonded heterogeneous interfaces, leading to enhanced electromagnetic microwave attenuation and conversion, and ideal EMI shielding performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lianghao Song, Jing Zhang, Chengyu Huang, Chenfei Zhao, Xuemin Yin, Hongli Long, Yang Liu, Yufeng Zhao
Summary: Co catalyst nanoparticles combined with nitrogen-doped hollow carbon nanoboxes were successfully designed through zeolite-imidazole framework (ZIF-67) carbonization, showing high catalytic activity and stability for Zn-air batteries (ZABs) and fuel cells. The 3D hollow nanoboxes reduced charge transport resistance, and the Co nanoparticles loaded on nitrogen-doped carbon supports exhibited excellent electrocatalytic performance (ORR, E-1/2=0.823 V vs. RHE) comparable to commercial Pt/C. Moreover, the designed catalysts showed an excellent peak density of 142 mW cm(-2) when applied on ZABs.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Materials Science, Ceramics
Yanqin Fu, Yulei Zhang, Hao Yan, Jinhua Li, Xuemin Yin, Jia Sun, Qiangang Fu, Ralf Riedel
Summary: Polymer-derived ultra-high-temperature ceramic (UHTC) nanocomposites with hafnium carbide (HfC) whiskers were successfully fabricated using a novel carbon nanotube (CNT) template growth mechanism. The CNTs served as templates for the HfC whiskers, which were synthesized by the release of low-molecular-weight gases during the pyrolysis of a Hf-containing precursor. The resulting products consisted of inner single crystal HfC whiskers and outer HfC/HfO2 particles.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Chemistry, Physical
Bingkun Xu, Qinchuan He, Yiqun Wang, Xuemin Yin
Summary: In this study, unique 2D accordion-like SiC/C composites were successfully prepared through a microwave-assisted method and carbothermal reduction strategy. Microstructural modification and multicomponent modulation were achieved by regulating the carbothermal reduction temperature. The results demonstrate that the 2D accordion-like SiC/C composites exhibit superior electromagnetic wave absorption properties.
Article
Materials Science, Ceramics
Xiaoyang Jiao, Qinchuan He, Jie Feng, Qing Tan, Yiqun Wang, Xuemin Yin
Summary: The ablation resistance and mechanism of C/C-SiC-HfC and mullite modified C/C-SiC-HfC composites were investigated. The results showed that the mullite modified composite exhibited improved ablation resistance. The introduction of mullite promoted the formation of HfSiO4, inhibited the consumption of SiO2, and restricted the formation of porous HfO2, resulting in the formation of a stable and dense Hf-Si-Al-O composite oxide layer.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Xiaoyang Jiao, Qing Tan, Qinchuan He, Mingcong Qing, Yiqun Wang, Xuemin Yin
Summary: Mullite-modified C/C-HfC-SiC composites were prepared by precursor infiltration and pyrolysis, and their phase composition, microstructure, and cyclic ablation behavior were investigated. Compared to C/C-HfC-SiC composites, the mullite-modified composites exhibited better ablation resistance. The structures transformed from HfO2-SiO2 to HfSiO4-wrapped carbon fibers and island shape HfO2-HfSiO4-SiO2 layer after successive ablations. The modified composites showed improved mass ablation rates after the formation of HfSiO4.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
