Have a Cake and Eat it Too: A Nanofluidic Hybrid Membrane with Both High Stability and Ionic Conductivity

Si, Lianmeng1; Xiao, Hong1; Xing, Wensi1; Song, Rui1; Li, Zhaoqi1; Li, Yiju2,3; Liang, Xu1; Song, Jianwei1; Shen, Shengping1

2024-06-01

10.1002/adfm.202404039

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

["Two-dimensional nanofluidic membranes are promising candidates for various applications, such as energy conversion and ionic sensing. However, simultaneously achieving high stability and high ion transport in a nanofluidic membrane remains a great challenge. Herein, a robust and durable aramid nanofiber/carboxylated aramid nanofiber (ANF/cANF) nanofluidic hybrid membrane is designed with high ion conductivity and selectivity via surface grafting engineering and hybridization strategies. Due to the inherent ordered and asymmetric molecular structure, the strong interchain interactions of the ANF and the strong interfacial interactions between the ANF and cANF enable the membrane to exhibit robust structural stability in a wet state. Meanwhile, the enhanced surface charge enabled by the surface functionalization of carboxyl groups on the ANF results in excellent ion transport. As a result, the conductivity of the membrane is 5 and 36 times higher than the ANF membrane and bulk solution, respectively. Importantly, the ionic conductivity and mechanical strength of the membrane remain unchanged even after immersing in water for 90 days, demonstrating favorable underwater application potential. Moreover, the membrane is recyclable and has superior processability, allowing for large-scale processing. This work provides a new strategy for designing durable and high-ion-transporting nanofluidic membranes for ion sensing and energy conversion.","To simultaneously achieve high stability and high ion transport in the nanofluidic membrane, a robust and durable aramid nanofiber/carboxylated aramid nanofiber (ANF/cANF) nanofluidic hybrid membrane with high ion conductivity and selectivity is designed via facile surface grafting engineering and hybridization strategies. Based on the nanofluidic membrane, a passive pressure sensor is demonstrated, showing great potential for underwater sensing and communication. image"]

2D membrane carboxylation durability ion regulation ion selectivity

SCI ; EI

英语

通讯

National Natural Science Foundation of China["12322205","12272285","52302261"] ; Guangdong Basic and Applied Basic Research Foundation[2023B1515120069]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001247188300001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Xi An Jiao Tong Univ, Sch Aerosp Engn, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Jiahua Chem Inc, Joint Lab, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Si, Lianmeng,Xiao, Hong,Xing, Wensi,et al. Have a Cake and Eat it Too: A Nanofluidic Hybrid Membrane with Both High Stability and Ionic Conductivity[J]. ADVANCED FUNCTIONAL MATERIALS,2024.

Si, Lianmeng.,Xiao, Hong.,Xing, Wensi.,Song, Rui.,Li, Zhaoqi.,...&Shen, Shengping.(2024).Have a Cake and Eat it Too: A Nanofluidic Hybrid Membrane with Both High Stability and Ionic Conductivity.ADVANCED FUNCTIONAL MATERIALS.

Si, Lianmeng,et al."Have a Cake and Eat it Too: A Nanofluidic Hybrid Membrane with Both High Stability and Ionic Conductivity".ADVANCED FUNCTIONAL MATERIALS (2024).