Oxygen Reduction Reaction Activity of Thermally Tailored Nitrogen‐Doped Carbon Electrocatalysts Prepared through Plasma Synthesis

Li, Oi Lun; Wada, Yuta; Kaneko, Amane; Lee, Hoonseung; Ishizaki, Takahiro

doi:10.1002/celc.201800063

Cited by 12 publications

(6 citation statements)

References 71 publications

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“…As displayed in Figure a, Figure S1a and b, Fe‐SA/NCS−X showed the flaky structures with smooth surface. HRTEM image of Fe‐SA/NCS‐700 in Figure b showed the microporous structures whose average diameters were less than 2 nm marked by the light purple circles, and displayed a lamellar spacing of 0.33‐0.34 nm, matching well with the (002) facets of graphitic carbon . Fe‐SA/NCS‐800 and Fe‐SA/NCS‐900 also showed the similar structures, observed in Figure S1c and S1d.…”

Section: Resultsmentioning

confidence: 55%

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO₂

Zhu

Wang

et al. 2020

ChemistrySelect

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Electrochemical reduction of CO 2 to carbon monoxide (CO) and other useful fuels/chemicals offers a green and promising technical solution for alleviating greenhouse effect and creating economic benefits. Herein, we developed a single-atom Fe dispersed on N-doped carbons nanosheet (FeÀ SA/NCSÀ X) for CO 2 electroreduction by direct pyrolysis of hemin-doped polyaniline fabricated by in-situ chemical polymerization. The Fe-SA/NCS-700 achieved a Faraday efficiency of CO up to 87 % at À 0.45 V vs. RHE, a low onset overpotential of 105 mV and remarkable durability with the current density being main-tained for 10 h constant electrocatalysis, which were comparable to the latest reported single-atom catalysts. The Tafel slope of Fe-SA/NCS-700 was measured to be about 67 mV/dec, close to theoretical value of 59 mV/dec, which indicated a rapid preequilibrating one-electron transfer followed by a rate-determining reaction step. DFT calculations revealed that the graphitic N species can synergistically improve the catalytic activities of Fe-N 4 sites of Fe-SA/NCSÀ X by significantly lowering the free energy barriers of *COOH intermediate formation, thus promoting CO 2 electroreduction to CO.

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Section: Resultsmentioning

confidence: 55%

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO₂

Zhu

Wang

et al. 2020

ChemistrySelect

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“…Recently, a great deal of research has been reported on the development of a heterogeneous atomic-doped carbon catalyst through bottom-up synthesis using heterocyclic compounds through liquid plasma engineering. The approach has many advantages, such as being conducted at room temperature and being able to synthesize a heterogeneous atomic-doped carbon catalyst simply by selecting different precursors [37][38][39][40][41][42][43][44]. On the other hand, due to the low thermal stability of amino-N, it is hard to retain amino-N on the carbon matrix by the conventional synthesis route [27].…”

Section: Introductionmentioning

confidence: 99%

Cobalt Nanoparticles on Plasma-Controlled Nitrogen-Doped Carbon as High-Performance ORR Electrocatalyst for Primary Zn-Air Battery

Kim

Hyun

2020

Nanomaterials

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Metal–air batteries and fuel cells have attracted much attention as powerful candidates for a renewable energy conversion system for the last few decades. However, the high cost and low durability of platinum-based catalysts used to enhance sluggish oxygen reduction reaction (ORR) at air electrodes prevents its wide application to industry. In this work, we applied a plasma process to synthesize cobalt nanoparticles catalysts on nitrogen-doped carbon support with controllable quaternary-N and amino-N structure. In the electrochemical test, the quaternary-N and amino-N-doped carbon (Q-A)/Co catalyst with dominant quaternary-N and amino-N showed the best onset potential (0.87 V vs. RHE) and highest limiting current density (−6.39 mA/cm2). Moreover, Q-A/Co was employed as the air catalyst of a primary zinc–air battery with comparable peak power density to a commercial 20 wt.% Pt/C catalyst with the same loading, as well as a stable galvanostatic discharge at −20 mA/cm2 for over 30,000 s. With this result, we proposed the synergetic effect of transitional metal nanoparticles with controllable nitrogen-bonding can improve the catalytic activity of the catalyst, which provides a new strategy to develop a Pt-free ORR electrocatalyst.

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“…For the one‐step production of NCNPs, the plasma deposition approach and the SP technique are both regarded as effective procedures ( Figure a). [ 123 ] The C–N type can be regulated by the types of additives and precursors (Figure 17b,c). Li and co‐workers fabricated various NCNPs with pyridine and acrylonitrile as precursors and Ru as additives, which can control the content of N elements (Figure 17d–g).…”

Section: Synthesis Of Metal‐free Carbon‐based Orr Catalyst Materials ...mentioning

confidence: 99%

Section: Synthesis Of Metal‐free Carbon‐based Orr Catalyst Materials ...mentioning

confidence: 99%

Advanced Nonplatinum Oxygen Reduction Electrocatalysts Prepared by Low‐Temperature Plasma Technology

Qin

Tian

et al. 2022

Adv Energy and Sustain Res

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With the continuous development of technology and the increasing energy demand, it is necessary to develop new energy‐storage and conversion devices. Oxygen reduction reaction (ORR) is a key step in energy‐conversion processes and the synthesis of new materials for highly efficient ORR electrocatalyst is critical in solving the energy problems. To enhance the activity of the electrocatalysts and expose more active sites on the surface, plasma technology is utilized to modify the catalyst surface through etching, heteroatom doping, and surface functionalization. Low‐temperature plasma technology is now used extensively in the synthesis and modification of materials. With the advantages of being highly efficient, environment friendly, and affordable, the low‐temperature plasma technology holds great potential for development in the future. Herein, the synthesis and modification of nonplatinum ORR catalysts using new advances in low‐temperature plasma technology are summarized. The application and development potential of plasma surface treatment and plasma synthesis on nonplatinum ORR catalysts are discussed to provide perspectives for future research in this field.

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Oxygen Reduction Reaction Activity of Thermally Tailored Nitrogen‐Doped Carbon Electrocatalysts Prepared through Plasma Synthesis

Cited by 12 publications

References 71 publications

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO₂

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO₂

Cobalt Nanoparticles on Plasma-Controlled Nitrogen-Doped Carbon as High-Performance ORR Electrocatalyst for Primary Zn-Air Battery

Advanced Nonplatinum Oxygen Reduction Electrocatalysts Prepared by Low‐Temperature Plasma Technology

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Oxygen Reduction Reaction Activity of Thermally Tailored Nitrogen‐Doped Carbon Electrocatalysts Prepared through Plasma Synthesis

Cited by 12 publications

References 71 publications

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO2

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO2

Cobalt Nanoparticles on Plasma-Controlled Nitrogen-Doped Carbon as High-Performance ORR Electrocatalyst for Primary Zn-Air Battery

Advanced Nonplatinum Oxygen Reduction Electrocatalysts Prepared by Low‐Temperature Plasma Technology

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Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO₂

Single‐Atom Iron‐Nitrogen Catalytic Site with Graphitic Nitrogen for Efficient Electroreduction of CO₂