文献类型：期刊文献

英文题名：Bio-Based Mechanically Strong Covalent Adaptable Networks for Stable-Response Solar Harvesting

作者：Bei, Yu[1,2] Hu, Yun[1] Hu, Lihong[1] Zhang, Meng[1] Jia, Puyou[1] Sha, Ye[3,4] Zhou, Yonghong[1,2]

第一作者：Bei, Yu

通信作者：Jia, PY[1];Zhou, YH[1];Zhou, YH[2];Sha, Y[3];Sha, Y[4]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Nanjing, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Nanjing, Peoples R China;[3]Nanjing Forestry Univ, Coll Sci, Dept Chem & Mat Sci, Nanjing, Peoples R China;[4]DingLi New Mat Technol Co Ltd, Taizhou, Peoples R China

年份：2025

外文期刊名：SUSMAT

收录：;EI(收录号：20253719131584);WOS:【SCI-EXPANDED(收录号:WOS:001562860100001)】；

基金：This study was supported by National Natural Science Foundation of China (32471815 and 32401528), and Natural Science Foundation of Jiangsu Province of China (BK20241745 and BK20240294).r No Statement Available

语种：英文

外文关键词：covalent adaptive network | photothermal conversion | solar energy collection | pi-pi conjugation

摘要：Lignin-based photothermal conversion materials provide effective solutions for advancing next-generation photothermal generators. However, recently reported lignin-based photothermal conversion materials face significant challenges due to poor mechanical strength, unstable solar energy collection, and difficulty in recycling. In response, high-performance photothermal materials based on lignin-tung oil covalent adaptive networks (LTs) are produced. The dynamic beta-hydroxyl esters and multiple hydrogen bonds confer LTs with mechanical robustness, high adhesive strength, swelling resistance, and cycle processing performance. The pi-pi conjugation of aromatic rings imparts efficient photothermal conversion performance to LTs. Under xenon light irradiation (200 s, 1.2 W cm-2), LTs achieved a photothermal temperature exceeding 125 degrees C. Furthermore, LTs demonstrated excellent maximum temperature stability over five light-heating and cooling cycles. The generator voltage remained stable within four cycles under leaf occlusion or real sunlight and could be artificially regulated when integrated into a thermoelectric generator. Consequently, the bio-based, mechanically strong, highly efficient, and stable-responding photothermal materials produced via a simple strategy hold significant potential for next generation solar thermal generators, suitable for industrial scale and large-scale production.