Silicon/copper dome-patterned electrodes for high-performance hybrid supercapacitors

Title
Silicon/copper dome-patterned electrodes for high-performance hybrid supercapacitors
Authors
Xuyan Liu정훈기김상옥Ho-Suk ChoiSangwha LeeJun Hyuk Moon이중기
Keywords
Silicon/Copper; dome-patterned; Supercapacitor
Issue Date
2013-12
Publisher
Scientific Reports
Citation
VOL 3, 3183-1-3183-7
Abstract
This study proposes a method for manufacturing high-performance electrode materials in which controlling the shape of the current collector and electrode material for a Li-ion capacitor (LIC). In particular, the proposed LIC manufacturing method maintains the high voltage of a cell by using a microdome-patterned electrode material, allowing for reversible reactions between the Li-ion and the active material for an extended period of time. As a result, the LICs exhibit initial capacities of approximately 42 F g−1, even at 60 A g−1. The LICs also exhibit good cycle performance up to approximately 15,000 cycles. In addition, these advancements allow for a considerably higher energy density than other existing capacitor systems. The energy density of the proposed LICs is approximately nine, two, and 1.5 times higher than those of the electrochemical double layer capacitor (EDLC), AC/LiMn2O4 hybrid capacitor, and intrinsic Si/AC LIC, respectively.
URI
http://pubs.kist.re.kr/handle/201004/46947
ISSN
20452322
Appears in Collections:
KIST Publication > Article
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