Projects per year
Abstract
Lightweight and flexible supercapacitors with high volumetric capacitance are vitally required for wearable and portable energy storage devices. We propose an eco-friendly, simple-to-fabricate high performance supercapacitor, which consists of a solid state material based on nitrogen-doped graphene flake electrodes distributed in the NaCl-containing hydrogel electrolyte, achieving a large surface area interface. Stretchability is achieved by sandwiching this structure between two single-walled carbon nanotube film current collectors. The as-prepared quasi-solid material exhibits outstanding volumetric capacitive performance, high energy density and power density values, attaining corresponding values of 806 F cm−3, 112 mW h cm−3 and 294 W cm−3 at 0.3 A g−1. This superior capacitive behavior is due to the excellent network comprising NaCl-containing hydrogel, N-Graphene powder and carbon nanotube film, offering new strategy for developing of sustainable high-performance supercapacitors. © 2020 Elsevier Ltd
Original language | English |
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Article number | 101505 |
Number of pages | 8 |
Journal | Journal of Energy Storage |
Volume | 30 |
DOIs | |
Publication status | Published - 1 Aug 2020 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Nitrogen-doped graphene
- Doped hydrogel
- Stretchable supercapacitor
- Energy storage
- Composite powder
Fingerprint
Dive into the research topics of 'Superior environmentally friendly stretchable supercapacitor based on nitrogen-doped graphene/hydrogel and single-walled carbon nanotubes'. Together they form a unique fingerprint.Projects
- 1 Finished
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Fabrication of highly stretchable and high performing energy storage devices
Kallio, T. (Principal investigator)
05/02/2018 → 31/12/2019
Project: Academy of Finland: Other research funding
Equipment
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility
Press/Media
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Lightning in a (nano)bottle: new supercapacitor opens door to better wearable electronics
11/06/2020
3 items of Media coverage
Press/Media: Media appearance