Bioinspired smart dual-layer hydrogels system with synchronous solar and thermal radiation modulation for energy-saving all-season temperature regulation  

作　　者：Meng-Chen Huang Chao-Hua Xue Zhongxue Bai Jun Cheng Yong-Gang Wu Chao-Qun Ma Li Wan Long Xie Hui-Di Wang Bing-Ying Liu Xiao-Jing Guo 

机构地区：[1]College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China [2]Schoolof Manufacture Science and Engineering,Key Laboratory of Testing Technology for Manufacturing Process,Ministry of Education,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China [3]School of Life Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China [4]Northwest Institute for Nonferrous Metal Research,Shaanxi Key Laboratory of Biomedical Metal Materials,Xi'an 710016,Shanxi,China

出　　处：《Journal of Energy Chemistry》2025年第2期175-190,I0005,共17页能源化学(英文版)

基　　金：the funding and generous support of the National Natural Science Foundation of China(52103263,52271249);the Key Project of International Science&Technology Cooperation of Shaanxi Province(2023-GHZD-09);the Key Project of Science Foundation of Education Department of Shaanxi Province(22JY011);the Key Project of Scientific Research and Development of Shaanxi Province(2023GXLH-070);the Qinchuangyuan"Scientist+Engineer"Team of Shaanxi Province(2023KXJ-069);the Key Research and Development Program of Shaanxi(2023-YBGY-488);the Sci-tech Innovation Team of Shaanxi Province(2024RS-CXTD-46);the Key Research and Development Program of Shaanxi Province(2020ZDLGY13-11).

摘　　要：All-season thermal management with zero energy consumption and emissions is more crucial to global decarbonization over traditional energy-intensive cooling/heating systems.However,the static single thermal management for cooling or heating fails to self-regulate the temperature in dynamic seasonal temperature condition.Herein,inspired by the dual-temperature regulation function of the fur color changes on the backs and abdomens of penguins,a smart thermal management composite hydrogel(PNA@H-PM Gel)system was subtly created though an"on-demand"dual-layer structure design strategy.The PNA@H-PM Gel system features synchronous solar and thermal radiation modulation as well as tunable phase transition temperatures to meet the variable seasonal thermal requirements and energy-saving demands via self-adaptive radiative cooling and solar heating regulation.Furthermore,this system demonstrates superb modulations of both the solar reflectance(ΔR=0.74)and thermal emissivity(ΔE=0.52)in response to ambient temperature changes,highlighting efficient temperature regulation with average radiative cooling and solar heating effects of 9.6℃in summer and 6.1℃in winter,respectively.Moreover,compared to standard building baselines,the PNA@H-PM Gel presents a more substantial energy-saving cooling/heating potentials for energy-efficient buildings across various regions and climates.This novel solution,inspired by penguins in the real world,will offer a fresh approach for producing intelligent,energy-saving thermal management materials,and serve for temperature regulation under dynamic climate conditions and even throughout all seasons.

关 键 词：Thermochromic hydrogel Self-adaptive thermal management Radiative cooling Spectral modulation ENERGY-SAVING 

分 类 号：TG1[金属学及工艺—金属学]