3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

Zhou, Sheng Gang; Qin, J.; Zhao, Xinbing; Yang, Jing

doi:10.1016/s1872-2067(20)63642-7

Cited by 40 publications

(14 citation statements)

References 49 publications

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“…[ 42 ] Furthermore, the favorable kinetics was confirmed by the electrochemical impedance spectra (EIS) (Figure S6, Supporting Information), which provide information on charge transfer resistance. [ 43 ] The smaller the semicircular of the material, the lower is the charge transfer resistance ( R ct ). Under open‐circuit potential, Ni–N x ‐2D/NPC and N‐2D/NPC show closer R ct in turn, promoting the oxygen evolution reaction (OER) kinetics via Ni–N x active sites without morphological effect.…”

Section: Resultsmentioning

confidence: 99%

Wide Potential CO₂‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–N_x Sites and Its Zn–CO₂ Battery Application

et al. 2021

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Although metal–N‐doped carbons are promising electrocatalysts for CO2‐to‐CO conversion due to their high conversion efficiency and current density, their commercial application is still challenging due to their narrow potential/current range. In general, a wide potential/current electrocatalyst is in high demand for industrial CO2 electrocatalysis. Controllable strategy to tune N configurations toward pyridinic‐enriched metal–Nx active sites is attractive. The synergetic effect of the ability of pyridinic N to capture Lewis acidic CO2 and the characteristics of Ni–N active sites to inhibit the hydrogen evolution reaction (HER) can achieve a wide potential window, which has high practical value. Herein, the well‐chosen precursors resulting in a pyridinic‐enriched Ni–Nx site can selectively catalyze CO2 toward CO generation in aqueous media with a high Faradaic efficiency (FE) of 100% with an overpotential of 680 mV. Continuous CO FE > 90% was recorded under a wide range of potentials without decay. Motivated by its practical characteristics in CO2 electrocatalysts, a Zn–CO2 battery is assembled achieving a CO2–CO conversion efficiency of more than 90% in a wide discharge current window. Therefore, the results highlight that pyridinic‐enriched Ni–Nx holds great promise as simultaneous CO‐selective electrocatalyst by suitably tuning M–N configurations as new perspective strategy.

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Section: Resultsmentioning

confidence: 99%

Wide Potential CO₂‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–N_x Sites and Its Zn–CO₂ Battery Application

et al. 2021

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“…Recently, modified graphyne materials have been shown to have potential applications in the field of catalysis, such as the HER, 67 OER, 67,68 NRR, 69 and carbon dioxide reduction reaction. 70 Graphyne-based materials can be divided into metal/non-metal atom-modified catalysts in the HER/OER.…”

Section: Classification Of Graphynementioning

confidence: 99%

“…63,64 Besides, graphyne can be used in a variety of electronic devices due to its controlled electrical conductivity, tunneling behavior and drain voltage. 65,66 Recently, modified graphyne materials have been shown to have potential applications in the field of catalysis, such as the HER, 67 OER, 67,68 NRR, 69 and carbon dioxide reduction reaction. 70 Graphyne-based materials can be divided into metal/non-metal atom-modified catalysts in the HER/OER.…”

Section: Graphynementioning

confidence: 99%

Environmental applications of single-atom catalysts based on graphdiyne

Zhao

Jiang

Qian

2023

Catal. Sci. Technol.

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“…In order to solve these problems, the development of catalyst materials with excellent bifunctional catalytic activity, low price and good stability has become a hotspot of current research. [10] At present, various materials such as transition metal sulfide, [11] phosphide, [12] carbide [13] and nitride [14] are widely used as efficient catalysts in ZABs. Among them, transition metal sulfide (TMSs) has attracted extensive attention because of its low cost and unique physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Waxberry‐Like MnS/Ni₃S₄as High‐Efficiency Bi‐Functional Catalyst for Zn‐Air Batteries

Fan

2023

Chemistry A European J

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In this paper, a waxberry‐like MnS/Ni3S4 composite catalyst was designed and synthesized. In this coating structure, MnS is located inside and Ni3S4 is wrapped on the surface to form a spherical structure. This structure makes the material show excellent stability in the electrocatalytic process. The diffusion staggered region structure formed at the two‐phase interface greatly enhances the synergistic interaction between MnS and Ni3S4. At the same time, the defects and vacancies formed by the diffusion mechanism at the interface of the two phases increase the active site and improve the interfacial electron transfer kinetics. Therefore, MnS/Ni3S4 composites showed good catalytic performance for ORR/OER. At 10 mA cm−2, the overpotential of it is only 320 mV, and the half‐wave potential can reach 0.81 V. The catalyst also exhibited extraordinary cycle stability and small voltage gap when used as cathode of Zn‐air batteries. When the current density is 3 mA cm−2, the cyclic discharge can be stable for 400 h and the voltage difference between the front and back does not increase more than. When the current density increases to 5 mA cm−2, the cyclic charge and discharge can be stable for more than 300 h.

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3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

Cited by 40 publications

References 49 publications

Wide Potential CO₂‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–N_x Sites and Its Zn–CO₂ Battery Application

Wide Potential CO₂‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–N_x Sites and Its Zn–CO₂ Battery Application

Environmental applications of single-atom catalysts based on graphdiyne

Waxberry‐Like MnS/Ni₃S₄as High‐Efficiency Bi‐Functional Catalyst for Zn‐Air Batteries

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3D hierarchically macro-/mesoporous graphene frameworks enriched with pyridinic-nitrogen-cobalt active sites as efficient reversible oxygen electrocatalysts for rechargeable zinc-air batteries

Cited by 40 publications

References 49 publications

Wide Potential CO2‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–Nx Sites and Its Zn–CO2 Battery Application

Wide Potential CO2‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–Nx Sites and Its Zn–CO2 Battery Application

Environmental applications of single-atom catalysts based on graphdiyne

Waxberry‐Like MnS/Ni3S4as High‐Efficiency Bi‐Functional Catalyst for Zn‐Air Batteries

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Product

Resources

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Wide Potential CO₂‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–N_x Sites and Its Zn–CO₂ Battery Application

Wide Potential CO₂‐to‐CO Electroreduction Relies on Pyridinic‐N/Ni–N_x Sites and Its Zn–CO₂ Battery Application

Waxberry‐Like MnS/Ni₃S₄as High‐Efficiency Bi‐Functional Catalyst for Zn‐Air Batteries