Norbornane derived N-doped sp2 carbon framework as an efficient electrocatalyst for oxygen reduction reaction and hydrogen evolution reaction

Mane, Rupali S.; Rahema, A.R. Shakeelur; Kothawade, Tejes; Chakraborty, Himanshu; Jha, Neetu

doi:10.1016/j.fuel.2022.124420

Cited by 5 publications

(4 citation statements)

References 97 publications

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“…6b, d, f, and h the highly resolved N 1s spectra exhibited five major species namely pyridinic N (N pyri ), pyrrolic N (N pyro ), metal-N (Co-N x ), graphitic N (N gra ), and N oxide (N oxide ) with corresponding BEs of ∼398.1 eV, 399.5 eV, 400.2 eV, 401.3 eV and 404 eV, respectively. 35 The slight negative shift in N pyri was due to charge density modification between the N doped carbon layers and the Co particles, which was consistent with the predicated work function. The active species present at the edge of the framework, i.e., N pyri bound to Co (Co-N) with a BE of ∼399 eV (∼1 eV upshift from that of pristine N pyri ) were considered to be active centers.…”

Section: Reaction Chemistry and Engineering Papersupporting

confidence: 76%

An electron “donor–acceptor–donor” strategy to activate ZIF-67 as a cathode material for fuel cells and zinc ion hybrid supercapacitor

et al. 2023

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Section: Reaction Chemistry and Engineering Papersupporting

confidence: 76%

An electron “donor–acceptor–donor” strategy to activate ZIF-67 as a cathode material for fuel cells and zinc ion hybrid supercapacitor

et al. 2023

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“…The high percentage of pyre-N increases the electron density near heteroatom, which could be the possible reason for enhanced ORR performance. 47 According to the reports, pyro-N improves the Lewis acid-base interaction and improves the binding energy and affinity of polar titanium further improving the electron transfer mechanism. 48 The presence of the N-O bond helps in improving the charge transfer kinetics of the electrode materials.…”

Section: Resultsmentioning

confidence: 99%

“…Each bond represents special significance toward the electrochemical activity of the catalyst. The high percentage of pyre‐N increases the electron density near heteroatom, which could be the possible reason for enhanced ORR performance 47 . According to the reports, pyro‐N improves the Lewis acid–base interaction and improves the binding energy and affinity of polar titanium further improving the electron transfer mechanism 48 .…”

Section: Resultsmentioning

confidence: 99%

A novel hierarchically hybrid structure of MXene and bi‐ligand ZIF‐67 based trifunctional electrocatalyst for zinc‐air battery and water splitting

Mane,

Somkuwar

et al. 2023

Battery Energy

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The development of cost‐effective and durable electrocatalysts possesses a broad spectrum of applications in sustainable energy systems. Herein, a hierarchical composite of Co‐based bi‐ligand zeolite imidazole framework (ZIF‐67) with highly conducting 2D MXene as highly efficient noble metal free electrocatalyst for electrochemical oxygen reduction reaction (ORR), complete water splitting, along with zinc‐air battery (ZAB) has been studied. ZIF‐67 is reported as an efficient electrocatalyst due to its porous structures, high surface area and atomically dispersed active metal centres while low conductivity and structural instability have been addressed by pyrolysis. In this work, structural disintegration due to temperature effect has been handled by using bi‐ligand linkers in ZIF (b‐ZIF‐67) which controls its sharp morphology and uniform mesoporous structure. This b‐ZIF‐67 has been supported on highly conducting 2D MXene material which exposes ample accessible active sites to accelerate the electroactivity of the synthesized catalyst. The resultant b‐CZIF‐67/MXene catalyst exhibits superior onset of 0.91 and 0.93 V in acidic and alkaline medium respectively for ORR. At the current density of 10 mA/cm2 catalyst shows a very low overpotential of 0.170 mV and 1.47 V for HER and OER, respectively. The excellent specific charge storage of 550.6 mAh/g was displayed by the homemade ZAB pouch.

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“…Camphor is a completely natural source for both sp 2 and sp 3 covalent bonds with carbon and is considered as a new nanomaterial. It is possible to produce 0.1 g of carbon nanotubes from 0.5 g of camphor [40,41]. When used as particles, camphor soot demonstrated a better thermal conductivity, a large specific surface area and good compatibility with polymers.…”

Section: Introductionmentioning

confidence: 99%

Effect of hybridization on camphor soot-embedded palmyra fiber-reinforced nylon nanocomposites

Raghavendra,

C A,

Shilpa

et al. 2023

Funct. Compos. Struct.

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In the present study camphor soot filled palmyra fiber reinforced nylon 6 hybrid nano composites (CPFNnC) were prepared using a twin -screw extruder with different wt. % (0, 3, 6, 9). These composites were characterized to study the thermal, mechanical, and rheological properties. Thermo gravimetric Analysis (TGA) showed marginal increase in thermal stability with 6wt. % CPFNnC. Differential Scanning Calorimetry (DSC) curves showed a slight increment in the melting point in CPFNnC while degradation temperature decreased with fiber contents. Dynamic Mechanical Analysis (DMA) indicated with maximum storage modulus for 6wt. % CPFNnC at 803 MPa compared with fiber free nylon-6 (696 MPa at 25 °C). Tan δ for 3 wt. % CPFNnC showed better damping effect due to the existence of palmyra fibers. Creep results indicated that, CPFNnC contains 6 wt.% fibers has minimum depth impression of 0.124 mm compared to fiber free nylon with 0.146 mm. Scanning Electron Microscope (SEM) revealed uniform distribution of modified palmyra fibers in the matrix and brittle fracture was observed in the CPFNnC. Compared to fiber free nylon-6, the tensile strength, flexural strength and density of the CPFNnC increased with increase in fiber content, however the impact strength and a lower Melt Flow Index (MFI) properties were found declined.

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Norbornane derived N-doped sp2 carbon framework as an efficient electrocatalyst for oxygen reduction reaction and hydrogen evolution reaction

Cited by 5 publications

References 97 publications

An electron “donor–acceptor–donor” strategy to activate ZIF-67 as a cathode material for fuel cells and zinc ion hybrid supercapacitor

An electron “donor–acceptor–donor” strategy to activate ZIF-67 as a cathode material for fuel cells and zinc ion hybrid supercapacitor

A novel hierarchically hybrid structure of MXene and bi‐ligand ZIF‐67 based trifunctional electrocatalyst for zinc‐air battery and water splitting

Effect of hybridization on camphor soot-embedded palmyra fiber-reinforced nylon nanocomposites

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