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Carbon Nanotubes Modified Solid Electrolyte-Based Structural Supercapacitors and their Temperature Influence

Liao, Guangyue and Geier, Sebastian and Mahrholz, Thorsten and Wierach, Peter and Wiedemann, Martin (2017) Carbon Nanotubes Modified Solid Electrolyte-Based Structural Supercapacitors and their Temperature Influence. In: Proceedings of the SMASIS 2017. The American Society of Mechanical Engineering. SMASIS 2017 Conference on Smart Materials, Adaptive Structures & Intelligent Systems, 18.-20.09.2017, Snowbird, Utha, USA.

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In the present work, we reporton structural supercapacitors which are based on NASICON-type solid electrolyte Li1.4Al0.4Ti1.6(PO4)3(LATP). The nanostructuredelectrodes incorporate single-wall carbon nanotubes (SWCNTs) mixedwith the LATP electrolyte. The complete energy storage devices are manufactured ina sandwich structure consisting of two nanostructured electrode layers which are separated by a pure LATP layer.The as-prepared specimens are embedded in composite materials with Airstone880/886H epoxy resin as matrix. Theirelectrical properties are characterized by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Atambient temperature, the addition of 6.5 wt.% SWCNTs results in a distinct improvementby reducingthe total resistance of the embedded devices and enhancesthe capacitance from 0.025 mFg-1to 3.160 mFg-1at a scan rate of 5 mVs-1. Electrical measurements of two types of specimens are then applied underdifferent temperatures from ambient temperatureto 80 °C. It is observed that theequivalentseriesresistance (ESR) of device with SWCNTs decreases greatly and capacitanceincreases comparing with the device without SWCNTs. As a conclusion, the structural supercapacitors acquire excellent performance through high efficient double layer effectsrealized by nanostructured electrode/electrolyte interphase (large surface electrode areas).

Item URL in elib:https://elib.dlr.de/114388/
Document Type:Conference or Workshop Item (Speech)
Title:Carbon Nanotubes Modified Solid Electrolyte-Based Structural Supercapacitors and their Temperature Influence
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Liao, Guangyueguangyue.liao (at) dlr.deUNSPECIFIED
Geier, Sebastiansebastian.geier (at) dlr.dehttps://orcid.org/0000-0001-7941-3630
Mahrholz, Thorstenthorsten.mahrholz (at) dlr.deUNSPECIFIED
Wierach, Peterpeter.wierach (at) dlr.deUNSPECIFIED
Wiedemann, Martinmartin.wiedemann (at) dlr.deUNSPECIFIED
Date:September 2017
Journal or Publication Title:Proceedings of the SMASIS 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Publisher:The American Society of Mechanical Engineering
Keywords:Multifunctional composite, structural supercapacitor, Li1.4´Al 0.4 Ti 1.6 (PO4)3 solid electrolyte, carbon nanotube.
Event Title:SMASIS 2017 Conference on Smart Materials, Adaptive Structures & Intelligent Systems
Event Location:Snowbird, Utha, USA
Event Type:international Conference
Event Dates:18.-20.09.2017
Organizer:American Society of Mechanical Engineering
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)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Geier, Sebastian
Deposited On:09 Oct 2017 07:47
Last Modified:05 Mar 2018 06:37

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