Quasi-solid state dye-sensitized solar cells based on gel polymer electrolyte with poly(acrylonitrile-co-styrene)/NaI+I2

Lan, Zhang; Wang, Dongbo; Hao, Sancun; Lin, Jianming; Huang, Yunfang

doi:10.1016/j.solener.2005.11.007

Cited by 97 publications

(38 citation statements)

References 15 publications

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“…Such result has been stated in the literature [7]. To determine the ionic transport mechanism, the ionic conductivity-temperature relationship of gel electrolytes based on PVA was investigated using the Arrhenius equation [8] and given in Fig. 2 for different concentrations of KI.…”

Section: Characterization Studiessupporting

confidence: 72%

Poly(vinyl alcohol) Based Polymer Gel Electrolytes: Investigation on Their Conductivity and Characterization

Çavuş

Durgun

2016

Acta Phys. Pol. A

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Polymer gel electrolytes were prepared using poly(vinyl alcohol) (PVA) as polymer matrix. 1-methyl-2-pyrrolidone (NMP) and γ-butyrolactone (GBL) were preferred as the organic solvents. The alkali metal iodide salt (KI) and iodine (I2) were used as the redox couple. Liquid electrolytes with different concentrations of KI were prepared by dissolving iodide salt/iodine in the binary NMP:GBL (volume ratio 7:3) solvent mixture. PVA was added into the liquid electrolytes and then the resulting mixture was stirred at 110• C for 1 h. Gel form was obtained at room temperature. The highest ionic conductivity at room temperature is 8.41 mS/cm. The temperature dependence of ionic conductivity with respect to the all concentration of KI shows the Arrhenius behaviour. Characterizations of polymer gel electrolytes were performed using the Fourier transform infrared, thermal gravimetric analysis, and differential scanning calorimetry techniques.

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Section: Characterization Studiessupporting

confidence: 72%

Poly(vinyl alcohol) Based Polymer Gel Electrolytes: Investigation on Their Conductivity and Characterization

Çavuş

Durgun

2016

Acta Phys. Pol. A

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“…[24] It can be proved by the ATR-FTIR spectroscopy. The sample of PAA-PEG 1000 was selected to measure and a pure PAA was also measured for comparison.…”

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confidence: 94%

A Novel Thermosetting Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

et al. 2007

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Since the prototype of a dye-sensitized solar cell (DSSC) was reported in 1991 by O'Regan and Grätzel, [1] it has aroused intensive interest over the past decade due to its low cost and simple preparation procedure. [1,2] Based on liquid electrolytes, a photoelectric conversion efficiency of 11 % for DSSC has been achieved. [3,4] However, the potential problems caused by the liquid electrolytes, such as the leakage and volatilization of liquid, is considered as some of the critical factors limiting the long-term performance and practical use of the DSSCs. Thus, solid-state and quasi-solid-state electrolytes, such as polymer gel electrolytes, organic hole conductors and inorganic p-type semiconductors, [5][6][7][8][9][10][11][12][13][14][15][16][17] were attempted to replace the liquid electrolytes. However, due to low ionic conductivity, imperfect soakage of porous TiO 2 film and poor contact with counter electrode, the photoelectric conversion efficiency of DSSCs based on the solid-state electrolytes were less than 5 %. If an electrolyte can avoid the leakage and volatilization of liquid electrolyte and keep a high ionic conductivity and good interface contact with porous TiO 2 film and counter electrode, it is possible to accelerate the practical application of DSSCs. Gel electrolyte is one kind of electrolyte according with the above prerequisites, especially these thermo-irreversible (Thermosetting) gel electrolytes, which show high ionic conductivity, perfect interface contact, excellent chemical stability and temperature tolerance. [6,8,[18][19][20][21] Here, we report a novel thermosetting gel electrolyte (TSGE) based on poly (acrylic acid)-(ethylene glycol) (PAA-PEG) hybrid absorbing liquid electrolyte. It is known that poly (acrylic acid) (PAA) is a superabsorbent with 3D networks structure and hydrophilic groups, it can absorb large amount of liquid and the absorbed liquid is hard to be released even under some pressure. [22,23] However, pure PAA is not a good absorbent for conventional organic solvents used in liquid electrolytes. By modifying with amphiphilic poly (ethylene glycol) (PEG), the PAA-PEG hybrid shows a high absorbent ability for liquid electrolytes and the absorbed liquid electrolytes are hard to be leaked and volatilized for a long time. On the other hand, due to large amount of liquid is contained in the PAA-PEG hybrid, the ionic conductivity and interface soakage ability of the PAA-PEG hybrid is superior to that of solid-state electrolyte or other polymer gel electrolyte. The absorbed liquid electrolyte is kept in the networks of the hybrid due to hydrogen bonding between carboxylic groups and ether groups in the hybrid. Moreover, through reaction between Lewis basic organic solvents and the polyacid hybrid (PAA-PAG), a part of solvents is hanging on the polymer chains. Consequently, an electrolyte with thermosetting character and good stability, and with advantages for both liquid electrolyte and solid state electrolyte can be expected. Based on the TSGE, the DSSC shows a high photoel...

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“…Replacing the liquid electrolytes in the DSSCs with a solid (Byrne et al, 2013) or gel/quasi-solid state electrolyte is expected to address these problems (Stathatos et al, 2004). Various approaches have been employed to prepare gel/quasi-solid state electrolytes for DSSCs (Lan et al, 2006;Lan et al, 2007;Suresh et al, 2011;Zhang et al, 2012). For example an electrolyte consisting of PMII and I 2 solidified with SiO 2 nanoparticles achieves efficiencies of 1.2 to 1.5 % (Berginc et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The optimisation of dye sensitised solar cell working electrodes for graphene and SWCNTs containing quasi-solid state electrolytes

et al. 2014

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Publication informationSolar Energy, 110 (2014): 239-246 Publisher ElsevierItem record/more information http://hdl.handle.net/10197/6108 Publisher's statement þÿ T h i s i s t h e a u t h o r s v e r s i o n o f a w o r k t h a t w a s a c c e p t e d f o r p u b l i c a t i o n i n S o l a r E n e r g y .Changes resulting from the publishing process, such as peer review, editing, corrections, Highlights• Graphene & CNT based quasi-solid state electrolytes for dye sensitised solar cells.• Charge transfer resistances at counter electrode reduced by almost a factor of 50.• Optimisation of DSSC working electrodes for quasi-solid state electrolytes.• Significant performance improvement for quasi-solid state DSSC is achieved. AbstractIn this study, we report improved power conversion efficiencies of various carbon based quasi-solid state electrolytes/DSSCs by optimising the thickness of TiO 2 layer, incorporation of TiO 2 scattering layer and application of dense compact surface layers of TiO 2 on working electrodes. Single wall carbon nanotube (SWCNT) based quasi-solid state electrolytes showed increased power conversion efficiencies from 1.43 % to 3.49 %. For the mixture of graphene and SWCNTs the power conversion efficiencies improved from 2.50 % to 2.93 %.However, graphene based quasi-solid state electrolytes displayed small decreases in power conversion efficiencies from 2.10 % to 1.96 % due to the more viscous nature of this electrolyte. Electrochemical Impedance Spectroscopy (EIS) demonstrated that the addition of these various carbon based nanomaterials into PMII significantly decreases the charge transfer resistance at the counter electrode and hence the much better performance obtained with carbon based quasi-solid state electrolytes compared to pure PMII based DSSCs.

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Quasi-solid state dye-sensitized solar cells based on gel polymer electrolyte with poly(acrylonitrile-co-styrene)/NaI+I2

Cited by 97 publications

References 15 publications

Poly(vinyl alcohol) Based Polymer Gel Electrolytes: Investigation on Their Conductivity and Characterization

Poly(vinyl alcohol) Based Polymer Gel Electrolytes: Investigation on Their Conductivity and Characterization

A Novel Thermosetting Gel Electrolyte for Stable Quasi‐Solid‐State Dye‐Sensitized Solar Cells

The optimisation of dye sensitised solar cell working electrodes for graphene and SWCNTs containing quasi-solid state electrolytes

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