TY - JOUR AU - Gu, Weihua AU - Sheng, Jiaqi AU - Huang, Qianqian AU - Wang, Gehuan AU - Chen, Jiabin AU - Ji, Guangbin PY - 2021/04/05 Y2 - 2024/03/29 TI - Environmentally Friendly and Multifunctional Shaddock Peel-Based Carbon Aerogel for Thermal-Insulation and Microwave Absorption JF - Nano-Micro Letters JA - Nano-Micro Lett VL - 13 IS - SE - Articles DO - 10.1007/s40820-021-00635-1 UR - https://nmlett.org/index.php/nml/article/view/868 SP - 102 AB - <p>Eco-friendly electromagnetic wave absorbing materials with excellent thermal infrared stealth property, heat-insulating ability and compression resistance are highly attractive in practical applications. Meeting the aforesaid requirements simultaneously is a formidable challenge. Herein, ultra-light carbon aerogels were fabricated via fresh shaddock peel by facile freeze-drying method and calcination process, forming porous network architecture. With the heating platform temperature of 70&nbsp;°C, the upper surface temperatures of the as-prepared carbon aerogel present a slow upward trend. The color of the sample surface in thermal infrared images is similar to that of the surroundings. With the maximum compressive stress of 2.435&nbsp;kPa, the carbon aerogels can provide favorable endurance. The shaddock peel-based carbon aerogels possess the minimum reflection loss value (<em>RL</em><sub>min</sub>) of −&nbsp;29.50&nbsp;dB in X band. Meanwhile, the effective absorption bandwidth covers 5.80&nbsp;GHz at a relatively thin thickness of only 1.7&nbsp;mm. With the detection theta of 0°, the maximum radar cross-sectional (RCS) reduction values of 16.28&nbsp;dB m<sup>2</sup> can be achieved. Theoretical simulations of RCS have aroused extensive interest owing to their ingenious design and time-saving feature. This work paves the way for preparing multi-functional microwave absorbers derived from biomass raw materials under the guidance of RCS simulations.</p><p>Highlights:</p><p>1 The eco-friendly shaddock peel-derived carbon aerogels were prepared by a freeze-drying method.<br>2 Multiple functions such as thermal insulation, compression resistance and microwave absorption can be integrated into one material-carbon aerogel.<br>3 Novel computer simulation technology strategy was selected to simulate significant radar cross-sectional reduction values under real far field condition.</p> ER -