Synergistic effect of agarose biopolymer gel electrolyte with modified TiO2 for low-cost electrochemical device applications

被引:4
作者
Badri, Afzalina [1 ]
Razak, Sharin [1 ]
Nawawi, Wan Izhan [2 ]
Sabani, Norhayati [3 ]
Norizan, Mohd Natashah [3 ]
Abul Shukor, Amira [1 ]
机构
[1] Univ Malaysia Perlis, Fac Chem Engn Technol, Arau 02600, Malaysia
[2] Univ Teknol MARA, Fac Appl Sci, Arau 02600, Malaysia
[3] Univ Malaysia Perlis, Fac Elect Engn Technol, Arau 02600, Malaysia
关键词
SENSITIZED SOLAR-CELLS; POLYMER ELECTROLYTES; PERFORMANCE; POLYANILINE; NANOCOMPOSITE; PHOTOANODES; EFFICIENCY; MECHANISM; FILMS;
D O I
10.1007/s00289-022-04524-4
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The effect of different concentrations of agarose gel electrolyte in a low-cost fabrication of DSSC system was investigated. The modified DSSC was fabricated by a sandwiched method using ITO glass plates as substrates. TiO2-Graphene-coated glass plate was used as the working electrode while PANI-GO-coated glass plate works as a counter electrode, respectively. Both electrodes were separated by agarose gel mixture with KI solution as gel biopolymer electrolyte. The FTIR result showed that peaks of agarose are well observed in the KI-agarose spectra. In the XRD analysis, the combination of KI-agarose has reduced the crystallinity of agarose which was good for ionic conductivity value. The addition of agarose in KI solution also produced a fine channel to facilitate the ionic transfer in electrolyte. The behaviour of electrochemical properties of the system was observed using AC impedance spectroscopy based on the Nyquist plot. From the plot, three semicircles were observed as the responses at different frequencies. It was observed that the 5 wt% agarose electrolyte in DSSC system was selected as the optimum loading exhibiting the lowest resistivity ensuring the faster electron transfer and giving the ionic conductivity of 9.04 x 10(-1) S/cm. The ionic conductivity of the system was dropped at 2.21 x 10(-1) S/cm as the percentage of agarose was increase to 6 wt%.
引用
收藏
页码:9437 / 9450
页数:14
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