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Study on the Rectification of Ionic Diode Based on Cross-Linked Nanocellulose Bipolar Membranes
College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, P. R. China; Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping SE-601 74, Sweden.
RISE Research Institutes of Sweden, Digital Systems, Smart Hardware, Bio-, Organic and Printed Electronics, Norrköping 60233, Sweden.
Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping SE-601 74, Sweden.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0003-1874-2187
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2024 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 25, no 3, p. 1933-1941Article in journal (Refereed) Published
Abstract [en]

Nanocellulose-based membranes have attracted intense attention in bioelectronic devices due to their low cost, flexibility, biocompatibility, degradability, and sustainability. Herein, we demonstrate a flexible ionic diode using a cross-linked bipolar membrane fabricated from positively and negatively charged cellulose nanofibrils (CNFs). The rectified current originates from the asymmetric charge distribution, which can selectively determine the direction of ion transport inside the bipolar membrane. The mechanism of rectification was demonstrated by electrochemical impedance spectroscopy with voltage biases. The rectifying behavior of this kind of ionic diode was studied by using linear sweep voltammetry to obtain current-voltage characteristics and the time dependence of the current. In addition, the performance of cross-linked CNF diodes was investigated while changing parameters such as the thickness of the bipolar membranes, the scanning voltage range, and the scanning rate. A good long-term stability due to the high density cross-linking of the diode was shown in both current-voltage characteristics and the time dependence of current.

Place, publisher, year, edition, pages
American Chemical Society (ACS) , 2024. Vol. 25, no 3, p. 1933-1941
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Electrical Engineering, Electronic Engineering, Information Engineering
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URN: urn:nbn:se:kth:diva-344593DOI: 10.1021/acs.biomac.3c01353ISI: 001182503300001PubMedID: 38324476Scopus ID: 2-s2.0-85187301389OAI: oai:DiVA.org:kth-344593DiVA, id: diva2:1845981
Note

QC 20240326

Available from: 2024-03-20 Created: 2024-03-20 Last updated: 2024-03-26Bibliographically approved

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Erlandsson, JohanWågberg, Lars

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