Composites Research

  • 제31권6호
  • /
  • Pages.355-364
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  • 2018
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  • 2288-2103(pISSN)
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  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
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Flexible Energy-storage Devices: Maneuvers and Intermediate Towards Multi-functional Composites

  • Son, Ji Myeong (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Oh, Il Kwon (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
  • 투고 : 2018.06.05
  • 심사 : 2018.12.07
  • 발행 : 2018.12.31
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⟨ 이전 논문 다음 논문 ⟩

초록

Flexible energy-storage devices (FESDs) have been studied and developed extensively over the last few years because of demands in various fields. Since electrochemical performance and mechanical flexibility must be taken into account together, different framework from composition of conventional energy-storage devices (ESDs) is required. Numerous types of electrodes have been proposed to implement the FESDs. Herein, we review the works related to the FESDs so far and focus on free-standing electrodes and, especially substrate-based ones. The way to utilize carbon woven fabric (CF) or carbon cloth (CC) as flexible substrates is quite simple and intuitive. However, it is meaningful in the point of that the framework exploiting CF or CC can be extended to other applications resulting in multifunctional composites. Therefore, summary, which is on utilization of carbon-based material and conductive substrate containing CF and CC for ESDs, turns out to be helpful for other researchers to have crude concepts to get into energy-storage multi-functional composite. Moreover, polymer electrolytes are briefly explored as well because safety is one of the most important issues in FESDs and the electrolyte part mainly includes difficult obstacles to overcome. Lastly, we suggest some points that need to be further improved and studied for FESDs.

키워드

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Fig. 1. (a) Schematic of active material, CNT and PEDOT:PSS composite from ref [25], (b) free-standing graphene paper from ref [31], (c) SEM image of N-doped carbon foam with TiO2, (d) the magnified image, (e) Schematic of synthesis of the N-doped carbon foam with TiO2 from ref [32]

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Fig. 2. (a) Schematic of cellulose fibers wrapped by SWNTs, (b) charge-discharge of the SWNT/cotton and the one with MnO2, (c) Specific capacitance with respect to different current density from ref [38]

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Fig. 3. (a) A commercial cotton T-shirt, (b, c) activated carbon textiles (ACT), (d, e) SEM images of the ACT coated with MnO2 from ref [40]

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Fig. 4. (a) A functionalized graphene hydrogel (FGH) in the form of thin film, (b) SEM image of microstructures of the FGH, (c) a supercapacitor with the FGH from ref [41], (d-h) SEM images of the nickel-cobalt layered double hydroxide nanosheets on the textile substrate from ref [42]

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Fig. 5. (a) Schematic of CNT SC, (b) cyclic voltammetry of CNT SC from ref [46], (c) carbon-coated silicon NWs on the CF (c- Si NWs/CF), (d) SEM image of the c-Si NWs/CF, (e) chargedischarge of the c-Si NWs/CF, (f) rate capability with respect to cycle number from ref [47]

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Fig. 6. (a) SEM image of Coral structure of MnO2 on the CF (MnO2/CF), (b) cyclic voltammetry of MnO2/CF from ref [51], (c) SEM image of MnO2 nanoflower on the CC (MNF/ CC), (d) PPy-wraped MNF/CC, (e) cyclic voltammetry of the ASC, (f) ragon plot of the ASC from ref [52]

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Fig. 7. (a,b) SEM image of NiCo NW on the CC (NCNW/CC), (c) cyclic voltammetry of the NCNW/CC (d) charge-discharge of the NCNW/ CC from ref [54], (e) LED-on by LiCoO2//TiN, (f) charge-discharge of LiCoO2//TiN from ref [58]

BHJRB9_2018_v31n6_355_f0008.png 이미지

Fig. 8. (a) SEM image of reduced graphene oxide on the activated CC, (b) vanadium oxide on the activated CC, (c) LED-on by V2O5//Pin//rGO, (d) cyclic performance from ref [60]

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Fig. 9. (a) Schematics of preparation of interlinked solid polymer electrolyte (ISPE) and illustration (b, c) SEM images of ISPE from ref [64]

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