PMID- 28661648
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180725
LR  - 20180725
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 9
IP  - 29
DP  - 2017 Jul 26
TI  - Graphene-Fiber-Based Supercapacitors Favor N-Methyl-2-pyrrolidone/Ethyl Acetate 
      as the Spinning Solvent/Coagulant Combination.
PG  - 24568-24576
LID - 10.1021/acsami.7b05982 [doi]
AB  - One-dimensional flexible fiber supercapacitors (FSCs) have attracted great 
      interest as promising energy-storage units that can be seamlessly incorporated 
      into textiles via weaving, knitting, or braiding. The major challenges in this 
      field are to develop tougher and more efficient FSCs with a relatively easy and 
      scalable process. Here, we demonstrate a wet-spinning process to produce graphene 
      oxide (GO) fibers from GO dispersions in N-methyl-2-pyrrolidone (NMP), with ethyl 
      acetate as the coagulant. Upon chemical reduction of GO, the resulting NMP-based 
      reduced GO (rGO) fibers (rGO@NMP-Fs) are twice as high in the surface area and 
      toughness but comparable in tensile strength and conductivity as that of the 
      water-based rGO fibers (rGO@H(2)O-Fs). When assembled into parallel FSCs, 
      rGO@NMP-F-based supercapacitors (rGO@NMP-FSCs) offered a specific capacitance of 
      196.7 F cm(-3) (147.5 mF cm(-2)), five times higher than that of 
      rGO@H(2)O-F-based supercapacitors (rGO@H(2)O-FSCs) and also higher than most 
      existing wet-spun rGO-FSCs, as well as those FSCs built with metal wires, 
      graphene/carbon nanotube (CNT) fibers, or even pseudocapacitive materials. In 
      addition, our rGO@NMP-FSCs can provide good bending and cycling stability. The 
      energy density of our rGO@NMP-FSCs reaches ca. 6.8 mWh cm(-3), comparable to that 
      of a Li thin-film battery (4 V/500 muAh).
FAU - He, Nanfei
AU  - He N
AUID- ORCID: 0000-0001-6088-1784
AD  - Department of Textile Engineering, Chemistry and Science, North Carolina State 
      University , Raleigh, North Carolina 27606, United States.
FAU - Pan, Qin
AU  - Pan Q
AUID- ORCID: 0000-0002-1513-1842
AD  - Department of Textile Engineering, Chemistry and Science, North Carolina State 
      University , Raleigh, North Carolina 27606, United States.
FAU - Liu, Yixin
AU  - Liu Y
AD  - Department of Textile Engineering, Chemistry and Science, North Carolina State 
      University , Raleigh, North Carolina 27606, United States.
FAU - Gao, Wei
AU  - Gao W
AUID- ORCID: 0000-0002-5058-9840
AD  - Department of Textile Engineering, Chemistry and Science, North Carolina State 
      University , Raleigh, North Carolina 27606, United States.
LA  - eng
PT  - Journal Article
DEP - 20170714
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
OTO - NOTNLM
OT  - PVA electrolyte
OT  - fiber supercapacitors
OT  - graphene fibers
OT  - graphene oxide
OT  - wet spinning
EDAT- 2017/07/01 06:00
MHDA- 2017/07/01 06:01
CRDT- 2017/06/30 06:00
PHST- 2017/07/01 06:00 [pubmed]
PHST- 2017/07/01 06:01 [medline]
PHST- 2017/06/30 06:00 [entrez]
AID - 10.1021/acsami.7b05982 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2017 Jul 26;9(29):24568-24576. doi: 
      10.1021/acsami.7b05982. Epub 2017 Jul 14.