BROWSE

Related Researcher

Author's Photo

Jang, Ji-Hyun
Nano Crystal Lab (NCL)
Research Interests
  • Graphene, photoelectrochemical (PEC) H2 generation, ORR/OER, SERS,3D-Nanostructures, supercapacitors, thermoelectric materials

ITEM VIEW & DOWNLOAD

A one-step practical strategy to enhance overall supercapacitor performance

Cited 1 times inthomson ciCited 0 times inthomson ci
Title
A one-step practical strategy to enhance overall supercapacitor performance
Author
Kim, Sun-I.Kang, Kyeong-NamKim, Sung-WookJang, Ji-Hyun
Issue Date
2014-10
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.4, no.103, pp.59310 - 59314
Abstract
We introduce a straightforward strategy to simultaneously improve the capacitance, rate capability, and cycle life of a supercapacitor by simply electrodepositing Ni-nanoparticles (Ni-NPs) on an as-prepared electrode. 3D-structured current collectors such as metal foams, metal meshes, and carbon meshes have been widely used in supercapacitors, secondary batteries, glucose sensors, etc. In particular, the 3D-metal foam readily improves device properties due to its unique 3D-nature and high surface area. However, there are practical constraints when applying 3D-current collectors to the industrial world, including high cost. Here, by simply electrodepositing Ni-NPs in a cost-efficient manner, a similar effect to that derived with the use of 3D-metal foam was realized. After deposition, Ni-NPs are preferentially located near the contact area between the active materials and a plate-type current collector, which allows for tight binding between the active materials and the current collector as well as facile charge transfer and high capacitance. The Ni-deposited Ni(OH)(2) electrode pasted on a plate metal substrate showed 350% increased capacitance (1264 F g(-1)) and stability of 75% and 72% after 10 000 cycles and at a high current density of 20 A g(-1), respectively. Given the simplicity and cost-efficiency of this method, it can be readily applied to other energy storage devices with practical applications in the industrial world.
URI
https://scholarworks.unist.ac.kr/handle/201301/9789
DOI
10.1039/c4ra12886a
ISSN
2046-2069
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU