Insights on boosting oxygen evolution reaction performance via boron incorporation into nitrogen-doped carbon electrocatalysts

Li, Oi Lun; Pham, Nguyet N.T.; Kim, Jihun; Choi, Heechae; Lee, Dae Hoon; Yang, Yang; Yao, Wenhui; Cho, Young-Rae; Lee, Seung Geol

doi:10.1016/j.apsusc.2020.146979

Cited by 24 publications

(20 citation statements)

References 48 publications

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“…In general, the OER process starts with the adsorption of the OH-molecule on the catalyst. Based on DFT calculation, the B atom in the B, N-doped carbon matrix exhibits the more negative adsorption energy of OH* molecules and served as the major active site [21]. From our results, as shown in Figure 4a, the incorporation of MoC further enhances the OER activity of B, N-doped carbon, which might be accounted for further lowering the OH* adsorption energy via the synergic effect between MoC and B active sites.…”

Section: Electrochemical Performances For the Oermentioning

confidence: 62%

Hybrid Molybdenum Carbide/Heteroatom-Doped Carbon Electrocatalyst for Advanced Oxygen Evolution Reaction in Hydrogen Production

et al. 2020

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Hydrogen energy is one of the key technologies that can help to prevent global warming. A water electrolysis process can be used to produce hydrogen, in which hydrogen is produced at one electrode of the electrochemical cell, and oxygen is produced at the other electrode. On the other hand, the oxygen evolution reaction (OER) requires multiple reaction steps and precious-metal-based catalysts (e.g., Ru/C, Ir/C, RuO2, and IrO2) as electrocatalysts to improve the reaction rate. Their high cost and limited supply, however, limit their applications to the mass production of hydrogen. In this study, boron, nitrogen-doped carbon incorporated with molybdenum carbide (MoC-BN/C) was synthesized to replace the precious-metal-based catalysts in the OER. B, N-doped carbon with nanosized molybdenum nanoparticles was fabricated by plasma engineering. The synthesized catalysts were heat-treated at 600, 700, and 800 °C in nitrogen for one hour to enhance the conductivity. The best MoC-BN/C electrocatalysts (heated at 800 °C) exhibited superior OER catalytic activity: 1.498 V (vs. RHE) and 1.550 V at a current density of 10 and 100 mA/cm2, respectively. The hybrid electrocatalysts even outperformed the noble electrocatalyst (5 wt.% Ru/C) with higher stability. Therefore, the hybrid electrocatalyst can replace expensive precious-metal-based catalysts for the upcoming hydrogen economy.

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Section: Electrochemical Performances For the Oermentioning

confidence: 62%

Hybrid Molybdenum Carbide/Heteroatom-Doped Carbon Electrocatalyst for Advanced Oxygen Evolution Reaction in Hydrogen Production

et al. 2020

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“…Specifically, carbon atoms bonding with N will be positively charged and adsorb the OH – and accelerate the electron transfer between the catalyst surfaces and the reaction intermediates, increasing the OER activity. 64 Furthermore, CuCo 2 S 4 with a normal spinel crystal structure is suitable for electron transportation between Co 3+ and Cu 2+ ions and can directly provide lattice oxygen as one of the sources of the generated O 2 during OER, thus promoting OER activity. 65 Notably, the XPS study confirms the existence of the M-S bond (peak at 164.1 eV), which favorably boosts the OER performances.…”

Section: Oer Analysismentioning

confidence: 99%

CuCo₂S₄@B,N-Doped Reduced Graphene Oxide Hybrid as a Bifunctional Electrocatalyst for Oxygen Reduction and Evolution Reactions

Chowdhury

Maiyalagan

2022

ACS Omega

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In this report, a facile synthetic route is adopted for typically designing a hybrid electrocatalyst containing boron, nitrogen dual-doped reduced graphene oxide (B,N-rGO) and thiospinel CuCo 2 S 4 (CuCo 2 S 4 @B,N-rGO). The electrocatalytic activity of the hybrid catalyst is tested with respect to oxygen evolution (OER) and oxygen reduction (ORR) reactions in alkali. Physicochemical characterizations confirm the unique formation of a reduced graphene oxide–non-noble-metal sulfide hybrid. Electrochemical evaluation by cyclic voltammetry (CV) and linear-sweep voltammetry (LSV) reveals that the CuCo 2 S 4 @B,N-rGO hybrid possesses enhanced ORR and OER activity compared to the B,N-rGO-free CuCo 2 S 4 catalyst. The synthesized CuCo 2 S 4 @B,N-rGO hybrid demonstrates remarkable enhancement in catalytic performance with an improved onset potential (1.50 and 0.88 V) and low Tafel slope (112 and 73 mV dec –1 ) for both OER and ORR processes, respectively. In addition, the catalyst exhibits a diminutive potential difference (0.81 V) between the potential corresponding to the 10 mA cm –2 current density for OER and the half-wave potential for ORR. The superior catalytic activity and high durability of the hybrid material may be attributed to the synergistic effect arising from the metal sulfide and dual-doped reduced graphene oxide. The present study illuminates the possibility of using the dual-doped graphene oxide and metal sulfide hybrid as a competent bifunctional cathode catalyst for renewable energy application.

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“…The mixtures of boric acid and quinoline with various concentrations (up to 10 mM) were sonicated and plasma discharged. To obtain conductive B,N-co-doped carbon powders, the discharged solution was filtered, dried overnight at 80 °C, and eventually heated to 800 °C in an N 2 atmosphere for 1 h [ 79 ]. Tsounis et al synthesized vertical graphene (VG) on a carbon fiber paper without using any catalyst in a plasma-enhanced chemical vapor deposition process using Ar, CH 4 , and H 2 (1000 W, 10 min, 400 °C).…”

Section: Synthesis Of Carbon-based Nanocompositesmentioning

confidence: 99%

“…Incorporation of boron was reported to decrease the onset potential by 100 mV vs. RHE and overpotential by 61 mV at current densities of 10 mA cm −2 in alkaline media compared with the corresponding N-doped catalyst. DFT verified that chemisorption energy of -OH* on B,N-co-doped catalyst was 0.281 eV less [ 79 ]. Similarly, Paul et al documented an improved performance of graphene/BN-graphene stacked nanofilms toward OER due to the modified π-bonding environment in the top graphenic layer by doped B and N atoms.…”

Section: Reactivity Of Carbon-based Composite Materialsmentioning

confidence: 99%

Carbon-Based Composites as Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media

et al. 2021

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This review paper presents the most recent research progress on carbon-based composite electrocatalysts for the oxygen evolution reaction (OER), which are of interest for application in low temperature water electrolyzers for hydrogen production. The reviewed materials are primarily investigated as active and stable replacements aimed at lowering the cost of the metal electrocatalysts in liquid alkaline electrolyzers as well as potential electrocatalysts for an emerging technology like alkaline exchange membrane (AEM) electrolyzers. Low temperature electrolyzer technologies are first briefly introduced and the challenges thereof are presented. The non-carbon electrocatalysts are briefly overviewed, with an emphasis on the modes of action of different active phases. The main part of the review focuses on the role of carbon–metal compound active phase interfaces with an emphasis on the synergistic and additive effects. The procedures of carbon oxidative pretreatment and an overview of metal-free carbon catalysts for OER are presented. Then, the successful synthesis protocols of composite materials are presented with a discussion on the specific catalytic activity of carbon composites with metal hydroxides/oxyhydroxides/oxides, chalcogenides, nitrides and phosphides. Finally, a summary and outlook on carbon-based composites for low temperature water electrolysis are presented.

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Insights on boosting oxygen evolution reaction performance via boron incorporation into nitrogen-doped carbon electrocatalysts

Cited by 24 publications

References 48 publications

Hybrid Molybdenum Carbide/Heteroatom-Doped Carbon Electrocatalyst for Advanced Oxygen Evolution Reaction in Hydrogen Production

Hybrid Molybdenum Carbide/Heteroatom-Doped Carbon Electrocatalyst for Advanced Oxygen Evolution Reaction in Hydrogen Production

CuCo₂S₄@B,N-Doped Reduced Graphene Oxide Hybrid as a Bifunctional Electrocatalyst for Oxygen Reduction and Evolution Reactions

Carbon-Based Composites as Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media

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Insights on boosting oxygen evolution reaction performance via boron incorporation into nitrogen-doped carbon electrocatalysts

Cited by 24 publications

References 48 publications

Hybrid Molybdenum Carbide/Heteroatom-Doped Carbon Electrocatalyst for Advanced Oxygen Evolution Reaction in Hydrogen Production

Hybrid Molybdenum Carbide/Heteroatom-Doped Carbon Electrocatalyst for Advanced Oxygen Evolution Reaction in Hydrogen Production

CuCo2S4@B,N-Doped Reduced Graphene Oxide Hybrid as a Bifunctional Electrocatalyst for Oxygen Reduction and Evolution Reactions

Carbon-Based Composites as Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media

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CuCo₂S₄@B,N-Doped Reduced Graphene Oxide Hybrid as a Bifunctional Electrocatalyst for Oxygen Reduction and Evolution Reactions