TY - JOUR
T1 - Inverse-Ordered Fabrication of Free-Standing CNT Sheets for Supercapacitor
AU - Koo, Youngmi
AU - Shanov, Vesselin N.
AU - Yarmolenko, Sergey
AU - Schulz, Mark
AU - Sankar, Jagannathan
AU - Yun, Yeoheung
PY - 2015/7/2
Y1 - 2015/7/2
N2 - Free-standing thin carbon nanotube (CNT) sheets are challenging to handle and control for device fabrication. In this paper, we report on the inverse-ordered fabrication method from thick CNT sheets to thin free-standing CNT sheets. As proof of the concept, thin CNT sheets for a supercapacitor were fabricated from 200 thick layers. The results show that the thin CNT sheet was electrochemically stable and had enhanced capacitive performance. The smaller the number of layers is, the larger the specific capacitances we have (from 10.10 F g-1 to 51.37 F g-1). Energy and power density were increased from 0.50 to 2.57 Wh kg-1 and from 0.33 to 2.31 kWkg-1, respectively. This simple and scalable inverse-ordered method is capable to fabricate CNT sheets in various forms, allowing fast trials on various applications.
AB - Free-standing thin carbon nanotube (CNT) sheets are challenging to handle and control for device fabrication. In this paper, we report on the inverse-ordered fabrication method from thick CNT sheets to thin free-standing CNT sheets. As proof of the concept, thin CNT sheets for a supercapacitor were fabricated from 200 thick layers. The results show that the thin CNT sheet was electrochemically stable and had enhanced capacitive performance. The smaller the number of layers is, the larger the specific capacitances we have (from 10.10 F g-1 to 51.37 F g-1). Energy and power density were increased from 0.50 to 2.57 Wh kg-1 and from 0.33 to 2.31 kWkg-1, respectively. This simple and scalable inverse-ordered method is capable to fabricate CNT sheets in various forms, allowing fast trials on various applications.
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U2 - 10.1021/acs.langmuir.5b00891
DO - 10.1021/acs.langmuir.5b00891
M3 - Article
SN - 0743-7463
VL - 31
SP - 7616
EP - 7622
JO - Langmuir
JF - Langmuir
IS - 27
ER -