Short hydrogen-bond network confined on COF surfaces enables ultrahigh proton conductivity

Benbing Shi, Xiao Pang, Shunning Li, Hong Wu, Jianliang Shen, Xiaoyao Wang, Chunyang Fan, Li Cao, Tianhao Zhu, Ming Qiu, Zhuoyu Yin, Yan Kong, Yiqin Liu, Mingzheng Zhang, Yawei Liu, Feng Pan, Zhongyi Jiang

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The idea of spatial confinement has gained widespread interest in myriad applications. Especially, the confined short hydrogen-bond (SHB) network could afford an attractive opportunity to enable proton transfer in a nearly barrierless manner, but its practical implementation has been challenging. Herein, we report a SHB network confined on the surface of ionic covalent organic framework (COF) membranes decorated by densely and uniformly distributed hydrophilic ligands. Combined experimental and theoretical evidences have pointed to the confinement of water molecules allocated to each ligand, achieving the local enrichment of hydronium ions and the concomitant formation of SHBs in water-hydronium domains. These overlapped water-hydronium domains create an interconnected SHB network, which yields an unprecedented ultrahigh proton conductivity of 1389 mS cm−1 at 90 °C, 100% relative humidity.
Original languageEnglish (US)
JournalNature Communications
Volume13
Issue number1
DOIs
StatePublished - Dec 1 2022
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology
  • General Chemistry
  • General Physics and Astronomy

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