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Title: High rate capacitive performance of single-walled carbon nanotube aerogels

Journal Article · · Nano Energy
 [1];  [2];  [3];  [1];  [3];  [3];  [1]
  1. Drexel Univ., Philadelphia, PA (United States). A. J. Drexel Nanomaterials Inst.. Dept. of Materials Science and Engineering
  2. Drexel Univ., Philadelphia, PA (United States). A. J. Drexel Nanomaterials Inst.. Dept. of Materials Science and Engineering; Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Materials Science and Engineering
  3. Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Materials Science and Engineering

Single-walled carbon nanotube (SWCNT) aerogels produced by critical-point-drying of wet-gel precursors exhibit unique properties, such as high surface-area-to-volume and strength-to-weight ratios. They are free-standing, are binder-free, and can be scaled to thicknesses of more than 1 mm. In this paper, we examine the electric double layer capacitive behavior of these materials using a common room temperature ionic liquid electrolyte, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI-TFSI). Electrochemical performance is assessed through galvanostatic cycling, cyclic voltammetry and impedance spectroscopy. Results indicate stable capacitive performance over 10,000 cycles as well as an impressive performance at high charge and discharge rates, due to accessible pore networks and enhanced electronic and ionic conductivities of SWCNT aerogels. Finally, these materials can find applications in mechanically compressible and flexible supercapacitor devices with high power requirements.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Contributing Organization:
Drexel Univ., Philadelphia, PA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1265520
Alternate ID(s):
OSTI ID: 1251827
Journal Information:
Nano Energy, Vol. 15; ISSN 2211-2855
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 47 works
Citation information provided by
Web of Science

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Immobilization of NiS nanoparticles on N-doped carbon fiber aerogels as advanced electrode materials for supercapacitors journal July 2016
Breathable and Wearable Energy Storage Based on Highly Flexible Paper Electrodes journal August 2016
Naturally Dried Graphene Aerogels with Superelasticity and Tunable Poisson's Ratio journal September 2016
Simultaneous Production of High-Performance Flexible Textile Electrodes and Fiber Electrodes for Wearable Energy Storage journal December 2015
A Hollow Spherical Carbon Derived from the Spray Drying of Corncob Lignin for High-Rate-Performance Supercapacitors journal February 2017
Highly Doped Carbon Nanobelts with Ultrahigh Nitrogen Content as High-Performance Supercapacitor Materials journal June 2017
Superfast Preparation of SWNT Sponge by Flame Burning Method and Its Adsorptive, Elastic and Electrochemical Properties journal July 2018
Flexible electrodes and supercapacitors for wearable energy storage: a review by category journal January 2016
A binder-free NiCo 2 O 4 nanosheet/3D elastic N-doped hollow carbon nanotube sponge electrode with high volumetric and gravimetric capacitances for asymmetric supercapacitors journal January 2017
Converting Commercial Sewing Threads into High‐Performance and Flexible/Wearable Fiber‐Shaped Supercapacitors via Facile Vapor Deposition Polymerization journal May 2019
A cobalt hydroxide-based compressible electrode material for asymmetrical all-solid supercapacitors journal January 2018
Carbon Nanotube Sponges, Aerogels, and Hierarchical Composites: Synthesis, Properties, and Energy Applications journal June 2016