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Nanostructured all-solid-state supercapacitor based on Li1.4Al0.4Ti1.6(PO4)3 ceramic electrolyte

Liao, Guangyue und Zou, Qianwen und Geier, Sebastian und Wierach, Peter und Wiedemann, Martin (2016) Nanostructured all-solid-state supercapacitor based on Li1.4Al0.4Ti1.6(PO4)3 ceramic electrolyte. 67th Annual Meeting of the International Society of Electrochemistry (ISE 67), 2016-08-21 - 2016-08-26, Den Haag, Niederlande.

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Kurzfassung

Lithium aluminum titanium phosphate (LATP) is a NASION-type lithium-ion conductor, which belongs to one of the most promising solid electrolytes. High ionic conductivity at ambient temperatures and sufficiently high electrochemical stability are outstanding parameters compared to well established types of solid electrolytes [1]. These features make LATP very useful in solid state batteries and various sensors. Moreover, a novel application has been identified recently [2] employing LATP as electrolyte for manufacturing of all-solid-state supercapacitors. Advantages of solid electrolyte supercapacitors include the following: they prevent problems related to electrolyte leakage; they are non-flammable, typically enable a very long shelf life and can operate in a wide temperature range (no electrolyte freezing or boiling occur). In the present research, Li1.4Al0.4Ti1.6(PO4)3 has been synthesized by sol-gel process and used as both separator and ion conductor. Three device architectures have been examined including two with nanostructured electrodes which incorporate single-wall carbon nanotubes (SWCNTs). Herein, the SWCNTs are mixed with LATP by using ultrasonic and ball milling processes. The scanning electron microscope images reveal a more homogeneous SWCNT/LATP composite acquired by ball milling than ultrasonication, which ensures that the individual CNTs are distributed uniformly throughout the LATP and well-separated from each other [3]. Finally the solid state supercapacitors are sintered at a temperature of 750°C under N2 atmosphere. Cyclic voltammetry and electrochemical impedance spectroscopy demonstrate that these devices develop reversible double layer capacitance. The maximum capacitance of 329.5mF/g is measured by using a device of nanostructured electrodes prepared form the ball milling mixing procedure. . Explanations for the improved conductivity when using SWCNTs for the electrode layers are given from electrochemical impedance spectroscopy.

elib-URL des Eintrags:https://elib.dlr.de/107928/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Nanostructured all-solid-state supercapacitor based on Li1.4Al0.4Ti1.6(PO4)3 ceramic electrolyte
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Liao, GuangyueGuangyue.Liao (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Zou, QianwenFA-MFWNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Geier, SebastianSebastian.Geier (at) dlr.dehttps://orcid.org/0000-0001-7941-3630NICHT SPEZIFIZIERT
Wierach, PeterPeter.Wierach (at) dlr.dehttps://orcid.org/0000-0003-0852-9112144717050
Wiedemann, MartinMartin.Wiedemann (at) dlr.dehttps://orcid.org/0000-0002-6095-9104NICHT SPEZIFIZIERT
Datum:August 2016
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:All-solid-state supercapacitor; solid electrolyte; nanostructured electrode; cyclic voltammetry; electrochemical impedance spectroscopy
Veranstaltungstitel:67th Annual Meeting of the International Society of Electrochemistry (ISE 67)
Veranstaltungsort:Den Haag, Niederlande
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:21 August 2016
Veranstaltungsende:26 August 2016
Veranstalter :international Society of Electrochemistry
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Technik für Raumfahrtsysteme
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R SY - Technik für Raumfahrtsysteme
DLR - Teilgebiet (Projekt, Vorhaben):R - Peakpower Superkondensatoren (alt), L - Strukturen und Werkstoffe (alt), E - Thermochemische Prozesse (Speicher) (alt), V - keine Zuordnung
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Multifunktionswerkstoffe
Hinterlegt von: Geier, Sebastian
Hinterlegt am:12 Dez 2016 08:50
Letzte Änderung:24 Apr 2024 20:13

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