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Open AccessArticle

Nitrogen-Doped Porous Carbon Derived from Biomass Used as Trifunctional Electrocatalyst toward Oxygen Reduction, Oxygen Evolution and Hydrogen Evolution Reactions

1
Centre for Nano and Soft Matter Science, (CeNS), Jalahalli, Bengaluru-560013, India
2
R&D Education center for whole life cycle R&D of fuel cell systems, Jeonbuk National University, Jeollabuk-do 54896, Korea
3
R&D Center for CANUTECH, Business Incubation Center, Department of Bioenvironmental Chemistry, Jeonbuk National University, Jeollabuk-do 54896, Korea
4
Department of Chemistry, Chikkanna Government Arts College, Tirupur-641502, Tamil Nadu, India
5
Department of Life Science, Graduate School of Department of Energy Storage/Conversion Engineering, and Hydrogen and Fuel Cell Research Center, Jeonbuk National University, Jeollabuk-do 54896, Korea
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(1), 76; https://doi.org/10.3390/nano10010076
Received: 20 November 2019 / Revised: 19 December 2019 / Accepted: 28 December 2019 / Published: 31 December 2019
(This article belongs to the Special Issue Novel Nanomaterials for Applications in Energy and Catalysis)
Tremendous developments in energy storage and conversion technologies urges researchers to develop inexpensive, greatly efficient, durable and metal-free electrocatalysts for tri-functional electrochemical reactions, namely oxygen reduction reactions (ORRs), oxygen evolution reactions (OERs) and hydrogen evolution reactions (HERs). In these regards, this present study focuses upon the synthesis of porous carbon (PC) or N-doped porous carbon (N-PC) acquired from golden shower pods biomass (GSB) via solvent-free synthesis. Raman spectroscopy, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) studies confirmed the doping of nitrogen in N-PC. In addition, morphological analysis via field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) provide evidence of the sheet-like porous structure of N-PC. ORR results from N-PC show the four-electron pathway (average n = 3.6) for ORRs with a Tafel slope of 86 mV dec−1 and a half-wave potential of 0.76 V. For OERs and HERs, [email protected] shows better overpotential values of 314 and 179 mV at 10 mA cm−2, and its corresponding Tafel slopes are 132 and 98 mV dec−1, respectively. The chronopotentiometry curve of [email protected] reveals better stability toward OER and HER at 50 mA cm−2 for 8 h. These consequences provide new pathways to fabricate efficient electrocatalysts of metal-free heteroatom-doped porous carbon from bio-waste/biomass for energy application in water splitting and metal air batteries. View Full-Text
Keywords: golden shower pods biomass; N-doped porous carbon; oxygen reduction reaction; oxygen evolution reaction; hydrogen evolution reaction golden shower pods biomass; N-doped porous carbon; oxygen reduction reaction; oxygen evolution reaction; hydrogen evolution reaction
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Sathiskumar, C.; Ramakrishnan, S.; Vinothkannan, M.; Rhan Kim, A.; Karthikeyan, S.; Yoo, D.J. Nitrogen-Doped Porous Carbon Derived from Biomass Used as Trifunctional Electrocatalyst toward Oxygen Reduction, Oxygen Evolution and Hydrogen Evolution Reactions. Nanomaterials 2020, 10, 76.

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