An Equivalent Substitute Strategy for Constructing 3D Ordered Porous Carbon Foams and Their Electromagnetic Attenuation Mechanism

材料科学 机制(生物学) 衰减 多孔性 复合材料 机械 碳纤维 多孔介质 光学 量子力学 物理 复合数
作者
Alan Meng,Hailong Ling,Ting Wang,Yingjing Jiang,Guanying Song,Zhao Wen,Laibin Zhao,Tingting Cheng,Yuxin Xie,Yuying Guo,Wenxin Zhao,Liying Yuan,Alan Meng,Zhenjiang Li
出处
期刊:Nano-micro Letters [Springer Science+Business Media]
卷期号:14 (1) 被引量:127
标识
DOI:10.1007/s40820-022-00900-x
摘要

Three-dimensional (3D) ordered porous carbon is generally believed to be a promising electromagnetic wave (EMW) absorbing material. However, most research works targeted performance improvement of 3D ordered porous carbon, and the specific attenuation mechanism is still ambiguous. Therefore, in this work, a novel ultra-light egg-derived porous carbon foam (EDCF) structure has been successfully constructed by a simple carbonization combined with the silica microsphere template-etching process. Based on an equivalent substitute strategy, the influence of pore volume and specific surface area on the electromagnetic parameters and EMW absorption properties of the EDCF products was confirmed respectively by adjusting the addition content and diameter of silica microspheres. As a primary attenuation mode, the dielectric loss originates from the comprehensive effect of conduction loss and polarization loss in S-band and C band, and the value is dominated by polarization loss in X band and Ku band, which is obviously greater than that of conduction loss. Furthermore, in all samples, the largest effective absorption bandwidth of EDCF-3 is 7.12 GHz under the thickness of 2.13 mm with the filling content of approximately 5 wt%, covering the whole Ku band. Meanwhile, the EDCF-7 sample with optimized pore volume and specific surface area achieves minimum reflection loss (RLmin) of - 58.08 dB at 16.86 GHz while the thickness is 1.27 mm. The outstanding research results not only provide a novel insight into enhancement of EMW absorption properties but also clarify the dominant dissipation mechanism for the porous carbon-based absorber from the perspective of objective experiments.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
invincible发布了新的文献求助10
1秒前
内向芒果完成签到,获得积分10
1秒前
1秒前
min完成签到,获得积分20
2秒前
稳重伊完成签到,获得积分10
3秒前
liangwang发布了新的文献求助10
5秒前
invincible完成签到,获得积分10
5秒前
6秒前
6秒前
6秒前
min发布了新的文献求助10
7秒前
Yolo发布了新的文献求助10
8秒前
mauve完成签到 ,获得积分10
8秒前
CodeCraft应助哇哇哇采纳,获得30
9秒前
李爱国应助聪明小虾米采纳,获得10
9秒前
10秒前
11秒前
Lam发布了新的文献求助10
11秒前
颜回完成签到,获得积分10
11秒前
天真的迎天完成签到,获得积分10
12秒前
在水一方应助开朗艳一采纳,获得10
14秒前
14秒前
达琳完成签到,获得积分20
16秒前
zzt发布了新的文献求助10
17秒前
chen发布了新的文献求助10
17秒前
量子星尘发布了新的文献求助10
17秒前
17秒前
自觉曼岚完成签到,获得积分10
18秒前
19秒前
zmx完成签到 ,获得积分10
19秒前
liangwang完成签到,获得积分10
19秒前
20秒前
善学以致用应助Lam采纳,获得10
21秒前
22秒前
qweasdzxcqwe发布了新的文献求助10
24秒前
VV2VV发布了新的文献求助10
25秒前
陈博文发布了新的文献求助10
26秒前
zzt完成签到,获得积分10
26秒前
ww发布了新的文献求助10
27秒前
万能图书馆应助周游采纳,获得10
29秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975661
求助须知:如何正确求助?哪些是违规求助? 3520000
关于积分的说明 11200535
捐赠科研通 3256410
什么是DOI,文献DOI怎么找? 1798247
邀请新用户注册赠送积分活动 877490
科研通“疑难数据库(出版商)”最低求助积分说明 806390