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Article

One-Pot Synthesis of W2C/WS2 Hybrid Nanostructures for Improved Hydrogen Evolution Reactions and Supercapacitors

by
Sajjad Hussain
1,2,
Iqra Rabani
2,
Dhanasekaran Vikraman
3,
Asad Feroze
4,
Muhammad Ali
5,
Young-Soo Seo
2,
Hyun-Seok Kim
3,
Seung-Hyun Chun
4 and
Jongwan Jung
1,2,*
1
Hybrid Materials Center (HMC), Sejong University, Seoul 05006, Korea
2
Department of Nano and Advanced Materials Engineering, Sejong University, Seoul 05006, Korea
3
Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea
4
Department of Physics, Sejong University, Seoul 05006, Korea
5
Center of Research Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(8), 1597; https://doi.org/10.3390/nano10081597
Submission received: 11 June 2020 / Revised: 12 August 2020 / Accepted: 12 August 2020 / Published: 14 August 2020
(This article belongs to the Special Issue 10th Anniversary of Nanomaterials—Recent Advances in Nanocomposite Thin Films and 2D Materials)
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Abstract

Tungsten sulfide (WS2) and tungsten carbide (W2C) are materialized as the auspicious candidates for various electrochemical applications, owing to their plentiful active edge sites and better conductivity. In this work, the integration of W2C and WS2 was performed by using a simple chemical reaction to form W2C/WS2 hybrid as a proficient electrode for hydrogen evolution and supercapacitors. For the first time, a W2C/WS2 hybrid was engaged as a supercapacitor electrode and explored an incredible specific capacitance of ~1018 F g−1 at 1 A g−1 with the outstanding robustness. Furthermore, the constructed symmetric supercapacitor using W2C/WS2 possessed an energy density of 45.5 Wh kg−1 at 0.5 kW kg−1 power density. For hydrogen evolution, the W2C/WS2 hybrid produced the low overpotentials of 133 and 105 mV at 10 mA cm−2 with the small Tafel slopes of 70 and 84 mV dec−1 in acidic and alkaline media, respectively, proving their outstanding interfaced electrocatalytic characteristics. The engineered W2C/WS2-based electrode offered the high-performance for electrochemical energy applications.
Keywords: hybrid; HER; WS2; W2C; symmetric; supercapacitors hybrid; HER; WS2; W2C; symmetric; supercapacitors
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MDPI and ACS Style

Hussain, S.; Rabani, I.; Vikraman, D.; Feroze, A.; Ali, M.; Seo, Y.-S.; Kim, H.-S.; Chun, S.-H.; Jung, J. One-Pot Synthesis of W2C/WS2 Hybrid Nanostructures for Improved Hydrogen Evolution Reactions and Supercapacitors. Nanomaterials 2020, 10, 1597. https://doi.org/10.3390/nano10081597

AMA Style

Hussain S, Rabani I, Vikraman D, Feroze A, Ali M, Seo Y-S, Kim H-S, Chun S-H, Jung J. One-Pot Synthesis of W2C/WS2 Hybrid Nanostructures for Improved Hydrogen Evolution Reactions and Supercapacitors. Nanomaterials. 2020; 10(8):1597. https://doi.org/10.3390/nano10081597

Chicago/Turabian Style

Hussain, Sajjad, Iqra Rabani, Dhanasekaran Vikraman, Asad Feroze, Muhammad Ali, Young-Soo Seo, Hyun-Seok Kim, Seung-Hyun Chun, and Jongwan Jung. 2020. "One-Pot Synthesis of W2C/WS2 Hybrid Nanostructures for Improved Hydrogen Evolution Reactions and Supercapacitors" Nanomaterials 10, no. 8: 1597. https://doi.org/10.3390/nano10081597

APA Style

Hussain, S., Rabani, I., Vikraman, D., Feroze, A., Ali, M., Seo, Y.-S., Kim, H.-S., Chun, S.-H., & Jung, J. (2020). One-Pot Synthesis of W2C/WS2 Hybrid Nanostructures for Improved Hydrogen Evolution Reactions and Supercapacitors. Nanomaterials, 10(8), 1597. https://doi.org/10.3390/nano10081597

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