2D Transition‐Metal Carbides: Novel 2D Transition‐Metal Carbides: Ultrahigh Performance Electrocatalysts for Overall Water Splitting and Oxygen Reduction (Adv. Funct. Mater. 47/2020)

Yu, Yadong; Zhou, Jian; Sun, Zhimei

doi:10.1002/adfm.202070311

Cited by 40 publications

(41 citation statements)

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“…is the key step to achieve sustainable energy utilization without harming our ecosystem. [ 1–6 ] Electrochemical water splitting is considered an attractive solution to convert and store these renewable energy sources with hydrogen as a high‐energy‐density energy carrier. [ 7–13 ] Highly purified water is demanded for current electrolysis technologies, but in fact 96.5% of the total water on the planet is reserved in the form of oceans.…”

Section: Introductionmentioning

confidence: 99%

Design of a Multilayered Oxygen‐Evolution Electrode with High Catalytic Activity and Corrosion Resistance for Saline Water Splitting

Liu

Chen

et al. 2021

Adv Funct Materials

140

102

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The realization of seawater electrolysis requires high‐performing anode materials that should possess good catalytic activity, stability, and specificity for the oxygen evolution reaction (OER) as well as high resistance toward chloride corrosion. Herein, the design of a multilayered oxygen‐evolution electrode is reported to meet the multiple needs of anode material for saline water splitting. The multilayered electrode is synthesized through direct thermal boronization of commercially available NiFe alloy plate with boron powder, followed by electrochemical oxidation. And this electrode is composed of the surface oxidized NiFeBx alloy layer, the NiFeBx alloy interlayer, and the NiFe alloy substrate. The boron species are present in the form of metaborate in the outermost oxidized NiFeBx layer, and their existence is conductive to the generation and stabilization of the catalytic active phase γ‐(Ni,Fe)OOH. The introduction of NiFeBx interlayer effectively prevents the excessive oxidative corrosion of the anode material in the electrolyte containing chloride ions.

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Section: Introductionmentioning

confidence: 99%

Design of a Multilayered Oxygen‐Evolution Electrode with High Catalytic Activity and Corrosion Resistance for Saline Water Splitting

Liu

Chen

et al. 2021

Adv Funct Materials

140

102

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“…Therefore, a lot of work has been done on seeking high efficiency and low‐cost non‐noble metal‐based catalysts, such as metal carbides, oxides, and nitrides, etc. [ 3–5 ] Among such catalysts, the most prominent is the iron‐based carbon material. [ 6–10 ] Nevertheless, the acidic‐oxygen reduction activity of existing non‐noble metal catalysts is not sufficient to replace Pt catalysts in proton exchange membrane fuel cells (PEMFCs)/metal‐air batteries.…”

Section: Introductionmentioning

confidence: 99%

Sulfate Ions Induced Concave Porous S‐N Co‐Doped Carbon Confined FeC_x Nanoclusters with Fe‐N₄ Sites for Efficient Oxygen Reduction in Alkaline and Acid Media

Jin

Zhao

Liang

et al. 2021

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To improve the catalytic activity of the catalysts, it is key to intensifying the intrinsic activity of active sites or increasing the exposure of accessible active sites. In this work, an efficient oxygen reduction electrocatalyst is designed that confines plentiful FeCx nanoclusters with Fe‐N4 sites in a concave porous S‐N co‐doped carbon matrix, readily accessible for the oxygen reduction reaction (ORR). Sulfate ions react with the carbon derived from ZIF‐8 at high temperatures, leading to the shrinkage of the carbon framework and then forming a concave structure with abundant macropores and mesopores with S incorporation. Such an architecture promotes the exposure of active sites and accelerates remote mass transfer. As a result, the catalyst (Fe/S‐NC) with a large number of C‐S‐C, Fe‐N4, and FeCx nanoclusters presents impressive ORR activity and stability. In alkaline media, the half‐wave potential of the best catalyst (Fe/S2‐NC) is 0.91 V, which far exceeds that of commercial platinum carbon (0.85 V), while in acidic media the half‐wave potential reaches 0.784 V, comparable to platinum carbon (0.812 V). Furthermore, for the zinc‐air battery, the outstanding peak power density of Fe/S2‐NC (170 mW cm−2) superior to platinum carbon (108 mW cm−2) also highlights its great application potential.

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“…[ 67 ] In this regard, a series of MC 2 (TiC 2 , VC 2 , NbC 2 , TaC 2 , MoC 2 ) were investigated as electrocatalysts for ORR. [ 68 ] TaC 2 and MoC 2 demonstrated superior ORR activity compared to Pt, which could be ascribed to the presence of dual‐active‐site. More importantly, this optimized active site could break the scaling relationships of traditional single‐active‐site.…”

Section: Orr Electrocatalystsmentioning

confidence: 99%

Advanced Oxygen Electrocatalysis in Energy Conversion and Storage

Yang

Han

Douka

et al. 2020

Adv Funct Materials

110

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Oxygen electrocatalysis is of great significance in electrochemical energy conversion and storage. Many strategies have been adopted for developing advanced oxygen electrocatalysts to promote these technologies. In this invited contribution, recent progress in understanding the oxygen electrochemistry from theoretical and experimental aspects is summarized. The major categories of oxygen electrocatalysts, namely, noble‐metal‐based compounds, transition‐metal‐based composites, and nanocarbons, are successively discussed for oxygen reduction and evolution. Design strategies of various oxygen electrocatalysts and their relationship on the structure–activity–performance are comprehensively addressed with the perspectives. Finally, the challenge and outlook for advanced oxygen electrocatalysts are discussed toward energy conversion and storage technologies.

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2D Transition‐Metal Carbides: Novel 2D Transition‐Metal Carbides: Ultrahigh Performance Electrocatalysts for Overall Water Splitting and Oxygen Reduction (Adv. Funct. Mater. 47/2020)

Cited by 40 publications

References 0 publications

Design of a Multilayered Oxygen‐Evolution Electrode with High Catalytic Activity and Corrosion Resistance for Saline Water Splitting

Design of a Multilayered Oxygen‐Evolution Electrode with High Catalytic Activity and Corrosion Resistance for Saline Water Splitting

Sulfate Ions Induced Concave Porous S‐N Co‐Doped Carbon Confined FeC_x Nanoclusters with Fe‐N₄ Sites for Efficient Oxygen Reduction in Alkaline and Acid Media

Advanced Oxygen Electrocatalysis in Energy Conversion and Storage

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2D Transition‐Metal Carbides: Novel 2D Transition‐Metal Carbides: Ultrahigh Performance Electrocatalysts for Overall Water Splitting and Oxygen Reduction (Adv. Funct. Mater. 47/2020)

Cited by 40 publications

References 0 publications

Design of a Multilayered Oxygen‐Evolution Electrode with High Catalytic Activity and Corrosion Resistance for Saline Water Splitting

Design of a Multilayered Oxygen‐Evolution Electrode with High Catalytic Activity and Corrosion Resistance for Saline Water Splitting

Sulfate Ions Induced Concave Porous S‐N Co‐Doped Carbon Confined FeCx Nanoclusters with Fe‐N4 Sites for Efficient Oxygen Reduction in Alkaline and Acid Media

Advanced Oxygen Electrocatalysis in Energy Conversion and Storage

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Sulfate Ions Induced Concave Porous S‐N Co‐Doped Carbon Confined FeC_x Nanoclusters with Fe‐N₄ Sites for Efficient Oxygen Reduction in Alkaline and Acid Media