Controllable ion transport in bilayer graphene with charged nanopores

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yanbo Xin
  • Qin Gao
  • Jiangshun Huang
  • Juan Gao
  • Xueli Geng
  • Hongliang Shi
  • Mei Wang
  • Zhisong Xiao
  • Anping Huang

Detail(s)

Original languageEnglish
Article number101767
Journal / PublicationMaterials Today Chemistry
Volume34
Online published17 Oct 2023
Publication statusPublished - Dec 2023

Abstract

Heterogeneous membrane structures exhibiting ion diode effects have attracted significant interest in energy conversion and storage. Herein, asymmetric double-layer graphene stacks with charged nanopores are constructed and placed in a KCl solution to study the controllable ion transport properties. Ion current rectification (ICR) is observed and the switching ratio is up to 102 by leveraging the asymmetric structure, charge, and interlayer distance. The trapping behavior of cations (K+) and anions (Cl) in the nanochannels is investigated by applying bias voltages, and peak ion capture occurs at an electric field of E = 0.02 V/Å. The underlying mechanism of ICR is elucidated according to the dependence between the ion current and carrier concentration in the nanopores. The results provide valuable insights into the ICR mechanism and reveal high potential in the energy field. © 2023 Elsevier Ltd.

Research Area(s)

  • Asymmetric nanochannels, Bilayer graphene, Ion current rectification, Ion transport, Nanopores

Citation Format(s)

Controllable ion transport in bilayer graphene with charged nanopores. / Xin, Yanbo; Gao, Qin; Huang, Jiangshun et al.
In: Materials Today Chemistry, Vol. 34, 101767, 12.2023.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review