ZIFs@chitosan Derived Efficient Bimetallic Carbon-Based Catalyst for Oxygen Reduction

Zhao, Xiaojun; Liu, Lijuan; Yang, Weiting; Pan, Qinhe

doi:10.1021/acs.iecr.1c04027

Cited by 10 publications

(4 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In view of this, an efficient and durable catalyst with a rigid structure, resistant to degradation, is essential for reliable operation. Among metal-free catalysts, defect-rich nitrogen-doped carbon nanotubes (NCNTs) or nanofibers (NCNFs), owing to their robust morphology with modified electronic structure, can offer ORR activity with enhanced durability. − Recent investigations have also revealed that the catalytic activity of carbon structures can be enhanced through the encapsulation of metal nanoparticles, leading to the modification of its electronic structure. − Thus, the ORR activity of NCNFs can also be increased through the encapsulation of suitable metals such as Fe, Co, etc. − However, in all the above cases, the ORR activity of the nonprecious metal-based catalysts has been demonstrated in an alkaline medium with very few reports on the behavior of the catalysts in the acidic medium.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Enhancement of Cobalt-Encapsulated Nitrogen-Doped Carbon Nanofiber Electrocatalyst through Ionic Liquid Modification for Efficient Oxygen Reduction

Parida

Ganguly

Barik

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The design of platinum-group-metal-free (PGM-free) electrocatalysts with appreciable activity and durability toward the oxygen reduction reaction (ORR) in acidic environments is a big challenge. Here, we report an efficient oxygen reduction activity of a Co-encapsulated nitrogen-doped carbon with nanofiber networks and its ionic liquid-modified interface in an acidic medium. The robust structure of the nanofibers embedded on a rigid framework derived from a zeolitic imidazole framework (ZIF-67) delivers promising activity and durability to the catalyst comparable to the state-of-the-art Pt/C. The ionic-liquid-modified catalyst shows a half-wave potential of 0.71 V vs RHE in oxygen-saturated 0.5 M H2SO4 along with activity reduction by only 11 mV (E 1/2) after 5000 cycles of the accelerated durability test. The catalyst also retains 71% of its original current during the short-term durability test. Furthermore, the electron transfer number and H2O2 yield of the catalyst during the ORR approaches 3.88–3.90 and 5.9–4.8% in the potential range 0.4–0.7 V vs RHE. The ORR performance of the ionic-liquid-modified catalyst is superior among all ionic liquid-based non-PGM catalysts reported so far in acidic media.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and Performance Enhancement of Cobalt-Encapsulated Nitrogen-Doped Carbon Nanofiber Electrocatalyst through Ionic Liquid Modification for Efficient Oxygen Reduction

Parida

Ganguly

Barik

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…A number of first row transition metal nanoparticle catalysts supported on N-doped carbon (N–C) matrices show good activity and durability for ORR in alkaline media. , Among these, Co-based N–C catalysts show particular promise for practical ORR electrocatalysis. , However, many reported works relating to Co-based N–C catalysts for ORR use expensive precursors or cumbersome methods to prepare carbon materials, such as graphene or carbon nanotubes . While such carbon supports show advantages in laboratory-based studies, they are unfeasible for use in commercial catalysts and ZABs.…”

Section: Introductionmentioning

confidence: 99%

l-Alanine-Assisted Synthesis of a Hierarchically Porous Co@N–C/N-Ketjenblack Carbon Catalyst for Oxygen Reduction in Zn–Air Batteries

Zhang

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The commercialization of zinc–air batteries (ZABs) and many types of fuel cells hinges on the discovery of non-precious metal catalysts with high activity and durability for the oxygen reduction reaction (ORR). Herein, we describe a simple and scalable l-alanine-assisted thermal pyrolysis strategy [utilizing l-alanine, urea, Ketjenblack carbon (KB), and CoCl2 as precursors] that yielded a Co@N–C/N–KB catalyst with outstanding ORR performance in alkaline media. The addition of l-alanine in the pyrolysis-step increased the proportion of pyridinic-N + graphitic-N in the Co@N–C/N–KB catalyst, with highly conductive KB-promoting electron transfer kinetics during ORR. These attributes, together with the hierarchical porosity of the catalyst [presence of micropores, mesopores (dominant), and macropores], gave Co@N–C/N–KB an onset potential of 0.91 V vs RHE, a half-wave potential of 0.84 V vs RHE, a limiting current density of −5.86 mA cm–2, a Tafel slope of 63.7 mV dec–1, and an excellent durability and methanol tolerance (superior to a commercial 20 wt % Pt/C catalyst in almost all these aspects). A ZAB constructed with Co@N–C/N–KB as the cathode catalyst delivered an impressive open-circuit voltage of 1.519 V, a high power density of 204.5 mW cm–2, an energy density up to 790 mA h gZn –1, and very stable operation with charge–discharge cycling, thus offering great promise for practical devices.

show abstract

“…In recent years, increasingly depleting resources and severe environmental pollution have attracted extensive attention worldwide. To better build a community of shared future for mankind, researchers are committed to developing new renewable and clean energy sources to replace traditional energy sources and mitigate environmental pollution and resource shortage [ 1 , 2 , 3 , 4 , 5 ]. Electrical energy is notable for its clean, efficient, economical, and practical characteristics and has emerged as a pivotal research topic [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Growth of Ceria-Modified N-Doped Carbon-Based Materials and Their Performance in the Oxygen Reduction Reaction

Chang

Jia

2022

Nanomaterials

View full text Add to dashboard Cite

Owning to their distinctive electronic structure, rare-earth-based catalysts exhibit good performance in the oxygen reduction reaction (ORR) and can replace commercial Pt/C. In this study, CeO2-modified N-doped C-based materials were synthesized using salt template and high-temperature calcination methods, and the synthesis conditions were optimized. The successful synthesis of CeO2–CN–800 was confirmed through a series of characterization methods and electrochemical tests. The test results show that the material has the peak onset potential of 0.90 V and the half-wave potential of 0.84 V, and has good durability and methanol resistance. The material demonstrates good ORR catalytic performance and can be used in Zn–air batteries. Moreover, it is an excellent catalyst for new energy equipment.

show abstract

ZIFs@chitosan Derived Efficient Bimetallic Carbon-Based Catalyst for Oxygen Reduction

Cited by 10 publications

References 56 publications

Design and Performance Enhancement of Cobalt-Encapsulated Nitrogen-Doped Carbon Nanofiber Electrocatalyst through Ionic Liquid Modification for Efficient Oxygen Reduction

Design and Performance Enhancement of Cobalt-Encapsulated Nitrogen-Doped Carbon Nanofiber Electrocatalyst through Ionic Liquid Modification for Efficient Oxygen Reduction

l-Alanine-Assisted Synthesis of a Hierarchically Porous Co@N–C/N-Ketjenblack Carbon Catalyst for Oxygen Reduction in Zn–Air Batteries

Evaluating the Growth of Ceria-Modified N-Doped Carbon-Based Materials and Their Performance in the Oxygen Reduction Reaction

Contact Info

Product

Resources

About