Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Etching-Assisted Crumpled Graphene Wrapped Spiky Iron Oxide Particles for High-Performance Li-Ion Hybrid Supercapacitor

Authors
Kim, EunjiKim, HyeriPark, Byung-JunHan, Young-HeePark, Jong HyukCho, JinhanLee, Sang-SooSon, Jeong Gon
Issue Date
19-4월-2018
Publisher
WILEY-V C H VERLAG GMBH
Keywords
crumpled graphene; Li-ion hybrid supercapacitors; partially etched iron oxide; spiky iron oxide particles; supercapacitors
Citation
SMALL, v.14, no.16
Indexed
SCIE
SCOPUS
Journal Title
SMALL
Volume
14
Number
16
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/76113
DOI
10.1002/smll.201704209
ISSN
1613-6810
Abstract
From graphene oxide wrapped iron oxide particles with etching/reduction process, high-performance anode and cathode materials of lithium-ion hybrid supercapacitors are obtained in the same process with different etching conditions, which consist of partially etched crumpled graphene (CG) wrapped spiky iron oxide particles (CG@SF) for a battery-type anode, and fully etched CG for a capacitive-type cathode. The CG is formed along the shape of spikily etched particles, resulting in high specific surface area and electrical conductivity, thus the CG-based cathode exhibits remarkable capacitive performance of 210 F g(-1) and excellent rate capabilities. The CG@SF can also be ideal anode materials owing to spiky and porous morphology of the particles and tightly attached crumpled graphene onto the spiky particles, which provides structural stability and low contact resistance during repetitive lithiation/delithiation processes. The CG@SF anode shows a particularly high capacitive performance of 1420 mAh g(-1) after 270 cycles, continuously increases capacity beyond the 270th cycle, and also maintains a high capacity of 170 mAh g(-1) at extremely high speeds of 100 C. The full-cell exhibits a higher energy density up to 121 Wh kg(-1) and maintains high energy density of 60.1 Wh kg(-1) at 18.0 kW kg(-1). This system could thus be a practical energy storage system to fill the gap between batteries and supercapacitors.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles

qrcode

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

Related Researcher

Researcher Cho, Jin han photo

Cho, Jin han
공과대학 (화공생명공학과)
Read more

Altmetrics

Total Views & Downloads

BROWSE