文献类型：期刊文献

英文题名：Strong, tough, ionic conductive, and freezing-tolerant all-natural hydrogel enabled by cellulose-bentonite coordination interactions

作者：Wang, Siheng[1,2,3] Yu, Le[2] Wang, Shanshan[3] Zhang, Lei[1] Chen, Lu[2] Xu, Xu[3] Song, Zhanqian[1] Liu, He[1] Chen, Chaoji[2]

第一作者：Wang, Siheng

通信作者：Liu, H[1];Chen, CJ[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Jiangsu Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China;[2]Wuhan Univ, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China;[3]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China

年份：2022

卷号：13

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;Scopus(收录号：2-s2.0-85132258268);WOS:【SCI-EXPANDED(收录号:WOS:000814343700006)】；

基金：This research was undertaken, in part, thanks to funding from the National Natural Science Foundation of China (Grant No. 31890744) to H.L., the Forestry Science and Technology Innovation and Extension Project of Jiangsu Province (No. LYKJ[2021]04) to H.L. C.C. would like to acknowledge Wuhan University for the financial support (Grant No. 691000003).

语种：英文

摘要：Cellulose based ion conductive hydrogels are emerging materials for application in flexible electronics but achieving simultaneously high conductivity and good mechanical properties remains challenging. Here, the authors propose a supramolecular engineering strategy to strengthen cellulosic hydrogel and to improve simultaneously its ionic conductivity and freezing tolerance. Ionic conductive hydrogels prepared from naturally abundant cellulose are ideal candidates for constructing flexible electronics from the perspective of commercialization and environmental sustainability. However, cellulosic hydrogels featuring both high mechanical strength and ionic conductivity remain extremely challenging to achieve because the ionic charge carriers tend to destroy the hydrogen-bonding network among cellulose. Here we propose a supramolecular engineering strategy to boost the mechanical performance and ionic conductivity of cellulosic hydrogels by incorporating bentonite (BT) via the strong cellulose-BT coordination interaction and the ion regulation capability of the nanoconfined cellulose-BT intercalated nanostructure. A strong (compressive strength up to 3.2 MPa), tough (fracture energy up to 0.45 MJ m(-3)), yet highly ionic conductive and freezing tolerant (high ionic conductivities of 89.9 and 25.8 mS cm(-1) at 25 and -20 degrees C, respectively) all-natural cellulose-BT hydrogel is successfully realized. These findings open up new perspectives for the design of cellulosic hydrogels and beyond.