Yuan Gao, Mingzhe Li, Chi Zhan, Haozhe Zhang, Mengtian Yin, Weiyi Lu, Baoxing Xu

A Nanoconfined Water–Ion Coordination Network for Flexible Energy‐Dissipation Devices

  • Mechanical Engineering
  • Mechanics of Materials
  • General Materials Science
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AbstractWater–ion interaction in a nanoconfined environment that deeply constrains spatial freedoms of local atomistic motion with unconventional coupling mechanisms beyond that in a free, bulk state is essential to spark designs of a broad spectrum of nanofluidic devices with unique properties and functionalities. Here, it is reported that the interaction between ions and water molecules in a hydrophobic nanopore forms a coordination network with an interaction density that is nearly fourfold that of the bulk counterpart. Such strong interaction facilitates the connectivity of the water–ion network and is uncovered by corroborating the formation of ion clusters and the reduction of particle dynamics. A liquid‐nanopore energy‐dissipation system is designed and demonstrated in both molecular simulations and experiments that the formed coordination network controls the outflow of confined electrolytes along with a pressure reduction, capable of providing flexible protection for personnel and devices and instrumentations against external mechanical impact and attack.

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