Enhanced Oxygen Evolution Reaction with a Ternary Hybrid of Patronite-Carbon Nanotube-Reduced Graphene Oxide: A Synergy between Experiments and Theory

Samantara, Aneeya K.Natl Inst Sci Educ & Res NISER, Sch Chem Sci, Khurja 752050, Odisha, India; Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India (author)

Enhanced Oxygen Evolution Reaction with a Ternary Hybrid of Patronite-Carbon Nanotube-Reduced Graphene Oxide : A Synergy between Experiments and Theory

This work reports the hybridization of patronite (VS4) sheets with reduced graphene oxide and functionalized carbon nanotubes (RGO/FCNT/VS4) through a hydrothermal method. The synergistic effect divulged by the individual components, i.e., RGO, FCNT, and VS4, significantly improves the efficiency of the ternary (RGO/FCNT/VS4) hybrid toward the oxygen evolution reaction (OER). The ternary composite exhibits an impressive electrocatalytic OER performance in 1 M KOH and requires only 230 mV overpotential to reach the state-of-the-art current density (10 mA cm–2). Additionally, the hybrid shows an appreciable Tafel slope with a higher Faradaic efficiency (97.55 ± 2.3%) at an overpotential of 230 mV. Further, these experimental findings are corroborated by the state-of-the-art density functional theory by presenting adsorption configurations, the density of states, and the overpotential of these hybrid structures. Interestingly, the theoretical overpotential follows the qualitative trend RGO/FCNT/VS4 < FCNT/VS4 < RGO/VS4, supporting the experimental findings.

Das, Jiban K.Natl Inst Sci Educ & Res NISER, Sch Chem Sci, Khurja 752050, Odisha, India; Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India (author)
Ratha, SatyajitIndian Inst Technol Bhubaneswar, Sch Basic Sci, Jatni 752050, Odisha, India (author)
Jena, Naresh K.Uppsala universitet,Materialteori(Swepub:uu)narje540 (author)
Chakraborty, BrahmanandaHomi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India; Bhabha Atom Res Ctr, High Pressure & Synchrotron Radiat Phys Div, Mumbai 400085, Maharashtra, India (author)
Behera, J. N.Natl Inst Sci Educ & Res NISER, Sch Chem Sci, Khurja 752050, Odisha, India; Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India (author)
Natl Inst Sci Educ & Res NISER, Sch Chem Sci, Khurja 752050, Odisha, India; Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, IndiaIndian Inst Technol Bhubaneswar, Sch Basic Sci, Jatni 752050, Odisha, India (creator_code:org_t)

In:ACS Applied Materials and Interfaces: American Chemical Society (ACS)13:30, s. 35828-358361944-82441944-8252

By the author/editor: Samantara, Aneey ...; Das, Jiban K.; Ratha, Satyajit; Jena, Naresh K.; Chakraborty, Bra ...; Behera, J. N.

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Materials Chemis ...

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