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Title: Synthesis and characterization of (Ni{sub 1−x}Co{sub x})Se{sub 2} based ternary selenides as electrocatalyst for triiodide reduction in dye-sensitized solar cells

Abstract

Ternary metal selenides of (Ni{sub 1−x}Co{sub x})Se{sub 2} with 0≤x≤1 were synthesized by using one-step hydrothermal reduction route. The synthesized metal selenides were utilized as an efficient, low-cost platinum free counter electrode for dye-sensitized solar cells. The cyclic voltammetry and electrochemical impedance spectroscopy studies revealed that the Ni{sub 0.5}Co{sub 0.5}Se{sub 2} counter electrode exhibited higher electrocatalytic activity and lower charge transfer resistance at the counter electrode/electrolyte interface than the other compositions for reduction of triiodide to iodide. Ternary selenides of Ni{sub 0.5}Co{sub 0.5}Se{sub 2} offer a synergistic effect to the electrocatalytic activity for the reduction of triiodide that might be due to an increase in active catalytic sites and small charge transfer resistance. The DSSC with Ni{sub 0.5}Co{sub 0.5}Se{sub 2} counter electrode achieved a high power conversion efficiency of 6.02%, which is comparable with that of conventional platinum counter electrode (6.11%). This present investigation demonstrates the potential application of Ni{sub 0.5}Co{sub 0.5}Se{sub 2} as counter electrode in dye-sensitized solar cells.

Authors:
;  [1];  [2];  [3];  [1];  [2]
  1. Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore 632115 (India)
  2. Centre for Ionics University of Malaya, Department of Physics, University of Malaya, Kuala Lumpur 50603 (Malaysia)
  3. Department of Physics, Yogi Vemana University, Kadapa 516003, Andhra Pradesh (India)
Publication Date:
OSTI Identifier:
22584109
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 238; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COBALT COMPOUNDS; COMPARATIVE EVALUATIONS; DYES; EFFICIENCY; ELECTROCATALYSTS; ELECTROCHEMISTRY; ELECTRODES; ELECTROLYTES; IMPEDANCE; INTERFACES; IODIDES; NICKEL COMPOUNDS; PLATINUM; SELENIDES; SOLAR CELLS; SPECTROSCOPY; SYNTHESIS; VOLTAMETRY

Citation Formats

Theerthagiri, J., Senthil, R.A., Buraidah, M.H., Raghavender, M., Madhavan, J., E-mail: jagan.madhavan@gmail.com, and Arof, A.K. Synthesis and characterization of (Ni{sub 1−x}Co{sub x})Se{sub 2} based ternary selenides as electrocatalyst for triiodide reduction in dye-sensitized solar cells. United States: N. p., 2016. Web. doi:10.1016/J.JSSC.2016.03.025.
Theerthagiri, J., Senthil, R.A., Buraidah, M.H., Raghavender, M., Madhavan, J., E-mail: jagan.madhavan@gmail.com, & Arof, A.K. Synthesis and characterization of (Ni{sub 1−x}Co{sub x})Se{sub 2} based ternary selenides as electrocatalyst for triiodide reduction in dye-sensitized solar cells. United States. doi:10.1016/J.JSSC.2016.03.025.
Theerthagiri, J., Senthil, R.A., Buraidah, M.H., Raghavender, M., Madhavan, J., E-mail: jagan.madhavan@gmail.com, and Arof, A.K. Wed . "Synthesis and characterization of (Ni{sub 1−x}Co{sub x})Se{sub 2} based ternary selenides as electrocatalyst for triiodide reduction in dye-sensitized solar cells". United States. doi:10.1016/J.JSSC.2016.03.025.
@article{osti_22584109,
title = {Synthesis and characterization of (Ni{sub 1−x}Co{sub x})Se{sub 2} based ternary selenides as electrocatalyst for triiodide reduction in dye-sensitized solar cells},
author = {Theerthagiri, J. and Senthil, R.A. and Buraidah, M.H. and Raghavender, M. and Madhavan, J., E-mail: jagan.madhavan@gmail.com and Arof, A.K.},
abstractNote = {Ternary metal selenides of (Ni{sub 1−x}Co{sub x})Se{sub 2} with 0≤x≤1 were synthesized by using one-step hydrothermal reduction route. The synthesized metal selenides were utilized as an efficient, low-cost platinum free counter electrode for dye-sensitized solar cells. The cyclic voltammetry and electrochemical impedance spectroscopy studies revealed that the Ni{sub 0.5}Co{sub 0.5}Se{sub 2} counter electrode exhibited higher electrocatalytic activity and lower charge transfer resistance at the counter electrode/electrolyte interface than the other compositions for reduction of triiodide to iodide. Ternary selenides of Ni{sub 0.5}Co{sub 0.5}Se{sub 2} offer a synergistic effect to the electrocatalytic activity for the reduction of triiodide that might be due to an increase in active catalytic sites and small charge transfer resistance. The DSSC with Ni{sub 0.5}Co{sub 0.5}Se{sub 2} counter electrode achieved a high power conversion efficiency of 6.02%, which is comparable with that of conventional platinum counter electrode (6.11%). This present investigation demonstrates the potential application of Ni{sub 0.5}Co{sub 0.5}Se{sub 2} as counter electrode in dye-sensitized solar cells.},
doi = {10.1016/J.JSSC.2016.03.025},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 238,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}