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Title: Solid-State Ionic Diodes Demonstrated in Conical Nanopores

Journal Article · · Journal of Physical Chemistry. C
 [1];  [1];  [2];  [3]; ORCiD logo [2]; ORCiD logo [4]
  1. Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
  2. Department of Chemistry, University of California, Irvine, California 92697, United States
  3. Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
  4. Department of Physics and Astronomy, University of California, Irvine, California 92697, United States, Department of Chemistry, University of California, Irvine, California 92697, United States, Department of Biomedical Engineering, University of California, Irvine, California 92697, United States

Ionic transport at the nanoscale features phenomena that are not observed in larger systems. Nonlinear current–voltage curves characteristic of ionic diodes as well as ion selectivity are examples of effects observed at the nanoscale. Many man-made nanopore systems are inspired by biological channels in a cell membrane, thus measurements are often performed in aqueous solutions. Consequently, much less is known about ionic transport in nonaqueous systems, especially in solid-state electrolytes. Here we show ionic transport through single pores filled with gel electrolyte of poly(methyl methacrylate) (PMMA) doped with LiClO4 in propylene carbonate. The system has no liquid interface and the ionic transport occurs through the porous gel structure. We demonstrate that a conically shaped nanopore filled with the gel rectifies the current and works as a solid-state ionic diode.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Nanostructures for Electrical Energy Storage (NEES); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of California, Irvine, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC001160; AC05-00OR22725; SC0001160
OSTI ID:
1346265
Alternate ID(s):
OSTI ID: 1394426; OSTI ID: 1523278
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Vol. 121 Journal Issue: 11; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Figures / Tables (5)