Heterostructures of tin and tungsten selenides for robust overall water splitting

Velpandian, Muthuraja and Ummethala, Govind and Malladi, Sairam K and Meduri, Praveen (2022) Heterostructures of tin and tungsten selenides for robust overall water splitting. Journal of Colloid and Interface Science, 623. pp. 561-573. ISSN 0021-9797

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Layered transition metal selenides have garnered increased attention in recent times as non-noble metal bifunctional electrocatalysts for electrochemical water splitting. Tungsten diselenide @ tin diselenide heterostructures in the present study significantly increase the electrochemical performance of oxygen evolution reaction with a low overpotential of 250 mV at 10mA cm(-2) and high stability for 16 h (8.9 % loss), hydrogen evolution reaction with a low overpotential of 180 mV at 10 mA cm(-2) with a 21.9% loss in 16 h. The overall water splitting using a lab-size electrolyzer shows a low cell voltage (1.52 V @ 10mA cm-2) and high durability for 50 h (15.2% loss @ 10mA cm(-2) and 4.4% loss @ 50 mA cm(-2)). As a result, the heterostructures have demonstrated their ability to handle multiple challenges in energy conversion systems due to their unique properties. (c) 2022 Elsevier Inc. All rights reserved.

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IITH Creators:
IITH CreatorsORCiD
Malladi, Sairam Khttps://orcid.org/0000-0002-0322-8137
Meduri, Praveenhttps://orcid.org/0000-0002-2100-4209
Item Type: Article
Additional Information: We would like to thank the Indian Institute of Technology, Hyderabad for the financial support in providing the necessary research facilities (under grant number INTDEC/20-21/F148/ID06). We would also like to thank the TEM, XRD, and Raman facilities in the institute for their help. DST-FIST program (under grant no. SR/FST/ETI-421/2016) provided financial assistance to SRKM.
Subjects: Materials Engineering > Materials engineering
Chemical Engineering
Divisions: Department of Chemical Engineering
Department of Material Science Engineering
Depositing User: Mr Alauddin Shan Khan
Date Deposited: 25 Nov 2022 09:35
Last Modified: 25 Nov 2022 09:35
URI: http://raiith.iith.ac.in/id/eprint/11426
Publisher URL: http://doi.org/10.1016/j.jcis.2022.05.052
OA policy: https://v2.sherpa.ac.uk/id/publication/41524
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