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Nanostructured all-solid-state supercapacitors based on NASICON-type Li1.4Al0.4Ti1.6(PO4)3 electrolyte

Liao, Guangyue and Mahrholz, Thorsten and Geier, Sebastian and Wierach, Peter and Wiedemann, Martin (2017) Nanostructured all-solid-state supercapacitors based on NASICON-type Li1.4Al0.4Ti1.6(PO4)3 electrolyte. Journal of Solid State Electrochemistry, pp. 1-7. Springer Berlin Heidelberg. doi: 10.1007/s10008-017-3849-z. ISSN 1432-8488.

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Official URL: https://link.springer.com/article/10.1007/s10008-017-3849-z

Abstract

Lithium aluminum titanium phosphate (LATP), a NASICON-type (structure of Na1 + xZr2SixP3 − xO12, 0 < x < 3) lithium ionic conductor, possesses high ionic conductivity at ambient temperature and sufficiently high electrochemical stability compared to well-established types of solid electrolytes. This ensures LATP being potentially used as solid electrolyte for all-solid-state supercapacitors. In the pure ionic conductors like LATP, the stoichiometry change under work potential for energy storage is not possible. Therefore, it is essential to produce heterophase contacts, at which the compositional changes could occur. Carbon nanotube (CNT), an excellent electronical conductor, has been consequently mixed with LATP. The all-solid-state supercapacitors with this LATP/CNT mixture have been manufactured in sandwich structure—two mixture layers separated by a pure LATP layer as separator. And the impedance behavior as well as supercapacitance dependent on various CNT weight percentages (1–7.5%) has been investigated by electrochemical impedance spectroscopy and cyclic voltammetry. The results clearly prove that electrical double layer could be formed at the heterophase contacts indicating the supercapacitance behavior of the device, especially when the high contents of CNTs are used. The capacitance of specimen without CNT shows only a value of 0.52 mF/cm3, which is strongly promoted to 11.59 mF/cm3 when CNT content increases to 7.5%.

Item URL in elib:https://elib.dlr.de/116940/
Document Type:Article
Title:Nanostructured all-solid-state supercapacitors based on NASICON-type Li1.4Al0.4Ti1.6(PO4)3 electrolyte
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Liao, GuangyueGuangyue.Liao (at) dlr.deUNSPECIFIED
Mahrholz, ThorstenThorsten.Mahrholz (at) dlr.deUNSPECIFIED
Geier, SebastianSebastian.Geier (at) dlr.dehttps://orcid.org/0000-0001-7941-3630
Wierach, PeterPeter.Wierach (at) dlr.deUNSPECIFIED
Wiedemann, Martinmartin.wiedemann (at) dlr.deUNSPECIFIED
Date:1 December 2017
Journal or Publication Title:Journal of Solid State Electrochemistry
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s10008-017-3849-z
Page Range:pp. 1-7
Publisher:Springer Berlin Heidelberg
ISSN:1432-8488
Status:Published
Keywords:Supercapacitor, Solid electrolyte, Carbon nanotube, Cyclic voltammetry, Electrochemical impedance spectroscopy;
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Peakpower Superkondensatoren (old), L - Structures and Materials (old), E - Materials for Energy Technologies (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Geier, Sebastian
Deposited On:11 Dec 2017 15:58
Last Modified:05 Mar 2018 06:41

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