title: Nanoparticle-Mediated Physical Exfoliation of Aqueous-Phase Graphene for Fabrication of Three-Dimensionally Structured Hybrid Electrodes.
abstract: Monodispersed polypyrrole (PPy) nanospheres were physically incorporated as guest species into stacked graphene layers without significant property degradation, thereby facilitating the formation of unique three-dimensional hybrid nanoarchitecture. The electrochemical properties of the graphene/particulate PPy (GPPy) nanohybrids were dependent on the sizes and contents of the PPy nanospheres. The nanohybrids exhibited optimum electrochemical performance in terms of redox activity, charge-transfer resistance, and specific capacitance at an 8:1 PPy/graphite (graphene precursor) weight ratio. The packing density of the alternately stacked nanohybrid structure varied with the nanosphere content, indicating the potential for high volumetric capacitance. The nanohybrids also exhibited good long-term cycling stability because of a structural synergy effect. Finally, fabricated nanohybrid-based flexible all-solid state capacitor cells exhibited good electrochemical performance in an acidic electrolyte with a maximum energy density of 8.4 Wh kg(-1) or 1.9 Wh L(-1) at a maximum power density of 3.2 kW kg(-1) or 0.7 kW L(-1); these performances were based on the mass or packing density of the electrode materials.
authors.affiliation: Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Younghee
authors.initials: Y
authors.lastname: Lee
authors.affiliation: Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Hojin
authors.initials: H
authors.lastname: Choi
authors.affiliation: Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Min-Sik
authors.initials: MS
authors.lastname: Kim
authors.affiliation: Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Seonmyeong
authors.initials: S
authors.lastname: Noh
authors.affiliation: Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Ki-Jin
authors.initials: KJ
authors.lastname: Ahn
authors.affiliation: Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Kyungun
authors.initials: K
authors.lastname: Im
authors.affiliation: BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejon 34141, South Korea.
authors.forename: Oh Seok
authors.initials: OS
authors.lastname: Kwon
authors.affiliation: Alan G. MacDiarmid Energy Research Institute, School of Polymer Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.|Department of Polymer Engineering, Graduate School, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South Korea.
authors.forename: Hyeonseok
authors.initials: H
authors.lastname: Yoon
references.citation: J Phys Chem B. 2006 Jul 27;110(29):14074-7
references.pmid: 16854102
references.citation: Nano Lett. 2007 Feb;7(2):238-42
references.pmid: 17297984
references.citation: Nano Lett. 2008 Oct;8(10):3498-502
references.pmid: 18788793
references.citation: Nano Lett. 2010 Dec 8;10(12):4863-8
references.pmid: 21058713
references.citation: J Phys Chem B. 2011 Aug 11;115(31):9570-5
references.pmid: 21721565
references.citation: Science. 2011 Nov 18;334(6058):917-8
references.pmid: 22096182
references.citation: Langmuir. 2012 Mar 13;28(10):4805-10
references.pmid: 22300451
references.citation: Acc Chem Res. 2013 Jan 15;46(1):14-22
references.pmid: 22433117
references.citation: ACS Nano. 2012 Sep 25;6(9):7624-33
references.pmid: 22900544
references.citation: Small. 2013 Jan 28;9(2):248-54
references.pmid: 23034820
references.citation: Nano Lett. 2013 May 8;13(5):2078-85
references.pmid: 23570565
references.citation: ACS Appl Mater Interfaces. 2013 Dec 26;5(24):13161-70
references.pmid: 24255939
references.citation: ACS Appl Mater Interfaces. 2014 Jan 8;6(1):642-7
references.pmid: 24313311
references.citation: Sci Rep. 2014 Jan 07;4:3591
references.pmid: 24395117
references.citation: Sci Rep. 2014 Jan 29;4:3928
references.pmid: 24473336
references.citation: Sci Rep. 2014 Feb 28;4:4237
references.pmid: 24577336
references.citation: Langmuir. 2014 Apr 1;30(12):3567-71
references.pmid: 24588395
references.citation: Langmuir. 2014 May 13;30(18):5306-13
references.pmid: 24761945
references.citation: ACS Appl Mater Interfaces. 2014 Jun 25;6(12):9671-9
references.pmid: 24873315
references.citation: ACS Appl Mater Interfaces. 2014 Aug 13;6(15):12656-64
references.pmid: 25010464
references.citation: Analyst. 2014 Sep 21;139(18):4466-75
references.pmid: 25068513
references.citation: ACS Appl Mater Interfaces. 2014 Oct 22;6(20):17937-43
references.pmid: 25247315
references.citation: Sci Rep. 2015 Jan 20;5:7903
references.pmid: 25600936
references.citation: Sci Rep. 2015 Feb 12;5:8420
references.pmid: 25673422
references.citation: Sci Rep. 2015 Apr 01;5:9501
references.pmid: 25830563
references.citation: Adv Mater. 2015 Jul 15;27(27):4054-61
references.pmid: 26043199
references.citation: Sci Rep. 2015 Jun 17;5:10983
references.pmid: 26084051
references.citation: Langmuir. 2015 Jul 21;31(28):7835-43
references.pmid: 26102524
references.citation: Langmuir. 2015 Aug 25;31(33):9214-8
references.pmid: 26221915
references.citation: J Phys Chem Lett. 2013 Apr 18;4(8):1244-53
references.pmid: 26282137
references.citation: Sci Rep. 2015 Sep 16;5:14097
references.pmid: 26373685
references.citation: Sci Rep. 2015 Sep 23;5:14445
references.pmid: 26395922
references.citation: Nanomaterials (Basel). 2015 Jun 02;5(2):906-936
references.pmid: 28347044
references.citation: Nanomaterials (Basel). 2013 Aug 27;3(3):524-549
references.pmid: 28348348