Journal article 439 views
Thermal decomposition derived nano molybdenum nitride for robust counter electrode in dye-sensitized solar cells
Priyada V. Rajeev,
Subashini Gnanasekar,
Kannan Gothandapani,
Raja Sellappan,
George Jacob,
Vimala Raghavan,
Sudhagar Pitchaimuthu 
,
Prasanat Sonar,
N. Krishna Chandar,
Soon Kwan Jeong,
Maqusood Ahamed,
Saravanan Pandiaraj,
Muthumareeswaran Ramamoorthy,
Andrews Nirmala Grace
,
Prasanat Sonar,
N. Krishna Chandar,
Soon Kwan Jeong,
Maqusood Ahamed,
Saravanan Pandiaraj,
Muthumareeswaran Ramamoorthy,
Andrews Nirmala Grace
Materials Today Communications, Volume: 26, Start page: 102070
Swansea University Author:
Sudhagar Pitchaimuthu
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.1016/j.mtcomm.2021.102070
Abstract
The unique category of transition metal nitrides has an immense scope as an electron-driven catalyst in redox reactions. However, synthesizing metal nitrides without contamination is very challenging. The residues present in the catalyst might affect catalytic activity. This work reports a simple sy...
| Published in: | Materials Today Communications |
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| ISSN: | 2352-4928 |
| Published: |
Elsevier BV
2021
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa56143 |
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| Abstract: |
The unique category of transition metal nitrides has an immense scope as an electron-driven catalyst in redox reactions. However, synthesizing metal nitrides without contamination is very challenging. The residues present in the catalyst might affect catalytic activity. This work reports a simple synthesis of contamination-free nanoscale molybdenum nitride (Mo2N) powder by integrated wet chemical and thermal decomposition techniques at 800 ̊C. Systematic structural and morphological studies were done, which shows the spherical shape of -Mo2N nanoparticles. Electrochemical and photovoltaic characteristics were studied using cyclic voltammetry, electrochemical impedance spectroscopy (EIS), Tafel polarization and J-V characteristics. As a result of high electrolyte diffusivity, less charge transfer resistance, high electrochemical stability and catalytic activity, the nano Mo2N based DSSCs exhibits 5.3% efficiency, which is comparable to Pt-based device (6.4%) fabricated under the similar condition that is 83.7% of the performance offered by an expensive counter electrode. This simple synthesis method could enable low-cost mass production of Mo2N nanoparticles as counter electrodes in DSSC. The developed counter electrodes may be a suitable alternative for stable, efficient and low-cost DSSCs. |
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| Keywords: |
Mo2N, Electrocatalyst, Pt-fee catalyst, dye-sensitized solar cells, redox reactions |
| College: |
Faculty of Science and Engineering |
| Start Page: |
102070 |