Quasi-solid state polymer electrolytes for dye-sensitized solar cells: Effect of the electrolyte components variation on the triiodide ion diffusion properties and charge-transfer resistance at platinum electrode

2006 ◽  
Vol 177 (35-36) ◽  
pp. 3141-3146 ◽  
Author(s):  
G NAZMUTDINOVA ◽  
S SENSFUSS ◽  
M SCHRODNER ◽  
A HINSCH ◽  
R SASTRAWAN ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolytes ◽  
Platinum Electrode ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
Ion Diffusion ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Diffusion Properties

High performance quasi-solid-state dye-sensitized solar cells based on acetamide-modified polymer electrolytes

2012 ◽  
Vol 13 (11) ◽  
pp. 2561-2567 ◽  
Author(s):  
Yanzheng Cui ◽  
Jing Zhang ◽  
Xueni Zhang ◽  
Jiangwei Feng ◽  
Yang Hong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Polymer Electrolytes ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Modified Polymer ◽  
Sensitized Solar Cells

scholarly journals Electrochemical, Structural and Morphological Characterization of Hydrothermally Fabricated Binary Palladium Alloys PdCo and PdNi

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 796
Author(s):  
Edson Meyer ◽  
Raymond Taziwa ◽  
Dorcas Mutukwa ◽  
Nyengerai Zingwe
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Binary Alloys ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
Palladium Alloys ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

This article details the development and characterization of binary palladium alloys synthesized via a hydrothermal process. Palladium alloys, being good redox catalysts, could potentially replace platinum in many applications such as in dye sensitized solar cells, capacitors and vehicular catalytic converters where platinum is vital for maximum productivity. A good replacement should be cheap, readily available and be able to offer comparable catalytic activity to that of platinum. As such we hereby attempt to hydrothermally fabricate and characterize binary palladium alloys PdNi and PdCo that could be ideal replacements for platinum. XRD analysis of the as-synthesized binary alloys revealed the existence of only palladium peaks at 2θ values of 40.1°, 46.7°, 68.1°, 82.1° and 86.6°, indicative of the successful formation of the binary alloys. SEM micrographs revealed that both alloys consisted of spherical particles with PdCo agglomerating to an extent, whereas PdNi was widely distributed, thus it could enhance electrolyte adsorption during catalytic reduction reactions. Cyclic voltammetry analysis at 50 mV∙s−1 revealed that PdNi is more electrocatalytically active with a reduction current density of 41 mA∙cm−2 compared to 18 mA∙cm−2 for PdCo. Lower charge transfer resistance from electrochemical impedance spectroscopy confirmed the superior catalytic ability of PdNi. The two palladium alloys also produced maximum specific capacitances of 68 and 27 F∙g−1 for PdNi and PdCo respectively. Analysis of the sample stability yielded coulombic efficiency retention of 98.7 and 97% for PdNi and PdCo respectively after 1000 cycles. Results obtained have shown that the palladium alloys with their low charge transfer resistance could be ideal replacements for platinum in dye sensitized solar cells. Modest specific capacitance for PdNi illustrates its potential as an electrode catalyst in capacitors.

An in situ polymerized PEDOT/Fe3O4 composite as a Pt-free counter electrode for highly efficient dye sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1637-1643 ◽  
Author(s):  
Min Zheng ◽  
Jinghao Huo ◽  
Yongguang Tu ◽  
Jinbiao Jia ◽  
Jihuai Wu ◽  
...  
Keyword(s):  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
High Power Conversion Efficiency ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Large Active Area ◽  
Low Charge ◽  
Sensitized Solar Cells

PEDOT/Fe3O4 hybrid is in situ polymerized and used as Pt-free counter electrode in dye-sensitized solar cell. Owing to large active area and low charge transfer resistance for the hybrid, the cell achieves a high power conversion efficiency of 8.69%.

Oligomer Approaches for Solid-State Dye-Sensitized Solar Cells Employing Polymer Electrolytes

2007 ◽  
Vol 111 (13) ◽  
pp. 5222-5228 ◽  
Author(s):  
Moon-Sung Kang ◽  
Jong Hak Kim ◽  
Jongok Won ◽  
Yong Soo Kang
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Polymer Electrolytes ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Chemically exfoliated nanosilicate platelet hybridized polymer electrolytes for solid state dye sensitized solar cells

2015 ◽  
Vol 39 (11) ◽  
pp. 8602-8613 ◽  
Author(s):  
Karuppanan Prabakaran ◽  
Smita Mohanty ◽  
Sanjay Kumar Nayak
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Solar Energy ◽  
Energy Conversion ◽  
Polymer Electrolytes ◽  
Dye Sensitized Solar Cells ◽  
Energy Conversion Efficiency ◽  
Dye Sensitized ◽  
Solar Energy Conversion Efficiency ◽  
Sensitized Solar Cells

Exfoliated MMT nanoplatelet incorporated PEO/PVdF–HFP electrolyte and TiO2/ZnO photoanode based DSSCs showed an improved solar energy conversion efficiency of about 3.8%.

scholarly journals Low-Cost and Efficient Nickel Nitroprusside/Graphene Nanohybrid Electrocatalysts as Counter Electrodes for Dye-Sensitized Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6563
Author(s):  
Md. Mahbubur Rahman
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Solution Process ◽  
Charge Transfer Resistance ◽  
Counter Electrodes ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Novel nickel nitroprusside (NNP) nanoparticles with incorporated graphene nanoplatelets (NNP/GnP) were used for the first time as a low-cost and effective counter electrode (CE) for dye-sensitized solar cells (DSSCs). NNP was synthesized at a low-temperature (25 °C) solution process with suitable purity and crystallinity with a size range from 5 to 10 nm, as confirmed by different spectroscopic and microscopic analyses. The incorporation of an optimized amount of GnP (0.2 wt%) into the NNP significantly improved the electrocatalytic behavior for the redox reaction of iodide (I-)/tri-iodide (I3-) by decreasing the charge-transfer resistance at the CE/electrolyte interface, lower than the NNP- and GnP-CEs, and comparable to the Pt-CE. The NNP/GnP nanohybrid CE when applied in DSSC exhibited a PCE of 6.13% (under one sun illumination conditions) with the Jsc, Voc, and FF of 14.22 mA/cm2, 0.628 V, and 68.68%, respectively, while the PCE of the reference Pt-CE-based DSSC was 6.37% (Jsc = 14.47 mA/cm2, Voc = 0.635 V, and FF = 69.20%). The low cost of the NNP/GnP hybrid CE with comparable photovoltaic performance to Pt-CE can be potentially exploited as a suitable replacement of Pt-CE in DSSCs.

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