文献类型：期刊文献

英文题名：A combined genetic modification and chemical engineering strategy for designing high-performance cellulose nanofibrils separators

作者：Xu, Ling-Hua[1,2] Wang, Peng-Fei[1,2] Xu, Ying[1,2] Liu, Jing[1,2] Peng, Xiao-Peng[3,4] Liu, Jia[1,2] Shen, Xiao-Jun[1,2] Wen, Jia-Long[1,2] Li, Quanzi[3] Yuan, Tong-Qi[1,2]

第一作者：Xu, Ling-Hua

通信作者：Wen, JL[1]

机构：[1]Beijing Forestry Univ, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China;[2]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;[3]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[4]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China

年份：2025

卷号：503

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20245017517361);Scopus(收录号：2-s2.0-85211504981);WOS:【SCI-EXPANDED(收录号:WOS:001386242700001)】；

基金：This work was supported by the STI 2030 - Major Project (2023ZD04069) , 5 center dot 5 Engineering Research & Innovation Team Project of Beijing Forestry University (No. BLRC 2023B05) is the project supported by Beijing Forestry University, China.

语种：英文

外文关键词：Genetic modification; Cellulose nanofibrils; Separator; Symmetrical capacitors; Zinc-ion hybrid capacitors

摘要：Cellulose nanofibrils (CNFs) emerge as prime candidates for fabricating separators in energy storage devices due to their unique structural properties and sustainability. However, conventionally prepared CNFs via chemical and physical methods are difficult to regulate the intrinsic properties, which limits the development of highperformance CNF separators. Herein, we designed a combinatorial strategy consisting of genetic modification and chemical treatment to successfully fabricate an ultrathin (25 mu m), high mechanical strength (96 MPa) and porosity (63%) CNFs separators for supercapacitors. Maleic anhydride (MAH) treatment effectively removed lignin and hemicelluloses in poplar wood, and obtained the esterified CNFs with high stability after a short time ultrasonication. The mild alkali treatment process restored the hydroxyl groups on the surface of CNFs and promoted the reconstruction of the hydrogen bond network, which improved the mechanical properties of the CNFs separators. Importantly, genetic modification achieved more favorable pore structure and electrolyte wettability than wild-type CNFs by increasing the width of CNFs to a greater extent. With these advantages, the assembled symmetric capacitors (SCs) and zinc-ion hybrid capacitors (ZIHCs) exhibited excellent capacitance and long-term cycling stability than of commercial separators. This integrated strategy promotes a more sustainable and efficient conversion of cellulose fibers and provides valuable insights into the development of nanocellulose-based separators.