TY - JOUR
T1 - Amphiphilic ligand exchange reaction-induced supercapacitor electrodes with high volumetric and scalable areal capacitances
AU - Nam, Donghyeon
AU - Heo, Yeongbeom
AU - Cheong, Sanghyuk
AU - Ko, Yongmin
AU - Cho, Jinhan
N1 - Funding Information:
This work was supported by the National Research Foundation (NRF) grant funded by the Korean government ( NRF-2015R1A2A1A01004354 ). Appendix A
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/5/15
Y1 - 2018/5/15
N2 - We introduce high-performance supercapacitor electrodes with ternary components prepared from consecutive amphiphilic ligand-exchange-based layer-by-layer (LbL) assembly among amine-functionalized multi-walled carbon nanotubes (NH 2 -MWCNTs) in alcohol, oleic acid-stabilized Fe 3 O 4 nanoparticles (OA-Fe 3 O 4 NPs) in toluene, and semiconducting polymers (PEDOT:PSS) in water. The periodic insertion of semiconducting polymers within the (OA-Fe 3 O 4 NP/NH 2 -MWCNT) n multilayer-coated indium tin oxide (ITO) electrode enhanced the volumetric and areal capacitances up to 408 ± 4 F cm −3 and 8.79 ± 0.06 mF cm −2 at 5 mV s −1 , respectively, allowing excellent cycling stability (98.8% of the initial capacitance after 5000 cycles) and good rate capability. These values were higher than those of the OA-Fe 3 O 4 NP/NH 2 -MWCNT multilayered electrode without semiconducting polymer linkers (volumetric capacitance ∼241 ± 4 F cm −3 and areal capacitance ∼1.95 ± 0.03 mF cm −2 ) at the same scan rate. Furthermore, when the asymmetric supercapacitor cells (ASCs) were prepared using OA-Fe 3 O 4 NP- and OA-MnO NP-based ternary component electrodes, they displayed high volumetric energy (0.36 mW h cm −3 ) and power densities (820 mW cm −3 ).
AB - We introduce high-performance supercapacitor electrodes with ternary components prepared from consecutive amphiphilic ligand-exchange-based layer-by-layer (LbL) assembly among amine-functionalized multi-walled carbon nanotubes (NH 2 -MWCNTs) in alcohol, oleic acid-stabilized Fe 3 O 4 nanoparticles (OA-Fe 3 O 4 NPs) in toluene, and semiconducting polymers (PEDOT:PSS) in water. The periodic insertion of semiconducting polymers within the (OA-Fe 3 O 4 NP/NH 2 -MWCNT) n multilayer-coated indium tin oxide (ITO) electrode enhanced the volumetric and areal capacitances up to 408 ± 4 F cm −3 and 8.79 ± 0.06 mF cm −2 at 5 mV s −1 , respectively, allowing excellent cycling stability (98.8% of the initial capacitance after 5000 cycles) and good rate capability. These values were higher than those of the OA-Fe 3 O 4 NP/NH 2 -MWCNT multilayered electrode without semiconducting polymer linkers (volumetric capacitance ∼241 ± 4 F cm −3 and areal capacitance ∼1.95 ± 0.03 mF cm −2 ) at the same scan rate. Furthermore, when the asymmetric supercapacitor cells (ASCs) were prepared using OA-Fe 3 O 4 NP- and OA-MnO NP-based ternary component electrodes, they displayed high volumetric energy (0.36 mW h cm −3 ) and power densities (820 mW cm −3 ).
KW - Amphiphilic ligand exchange
KW - Multi-walled carbon nanotubes
KW - Oleic-acid-stabilized iron oxide
KW - PEDOT:PSS
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=85041428693&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2018.01.153
DO - 10.1016/j.apsusc.2018.01.153
M3 - Article
AN - SCOPUS:85041428693
SN - 0169-4332
VL - 440
SP - 730
EP - 740
JO - Applied Surface Science
JF - Applied Surface Science
ER -