Three‐Dimensional Cathode Constructed through Confined‐Growth of FeP Nanocrystals in Ordered Mesoporous Carbon Film Coated on Carbon Cloth for Efficient Hydrogen Production

Liu, Zhipeng; Gao, Zhichao; Luo, Feng; Yuan, Shisheng; Wang, Kaiwen; Li, Nan; Li, Xiaotian

doi:10.1002/cctc.201800034

Cited by 8 publications

(5 citation statements)

References 34 publications

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“…OMC‐coated carbon fiber cloth: Ordered mesoporous carbon coated carbon cloth (OMC/CC) was prepared by our previous method . First, a 17.1 ml mixed aqueous solution containing 0.6 g (6.4 mmol) of phenol, 2.1 ml of formaldehyde solution (37 wt%) and 15 ml of sodium hydroxide (0.1 M) was stirred at 70 °C to form a low molecular‐weight resol.…”

Section: Methodsmentioning

confidence: 99%

“…OMC-coated carbon fiber cloth: Ordered mesoporous carbon coated carbon cloth (OMC/CC) was prepared by our previous method. [52] First, a 17.1 ml mixed aqueous solution containing 0.6 g (6.4 mmol) of phenol, 2.1 ml of formaldehyde solution (37 wt%) and 15 ml of sodium hydroxide (0.1 M) was stirred at 70°C to form a low molecular-weight resol. Subsequently, 0.96 g of triblock copolymer Pluronic F127 (M w = 12600, PEO 106 PPO 70 PEO 106 , Sigma) was added to the resol and stirred at 70°C until a dark red uniform solution was observed.…”

Section: Synthesis Of Catalystmentioning

confidence: 99%

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Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

Huang

Liu

et al. 2019

ChemCatChem

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Designing earth‐abundant and efficient electrocatalysts to replace noble metals is highly desired for the hydrogen evolution reaction (HER) in water electrolysis. In this study, we constructed a self‐supported electrode with ordered mesoporous carbon film coated carbon fibers as a substrate and Co doped FeS2 nanoparticles as catalytically active phase for the HER. The ordered mesoporous carbon served as nanoreactor to restrict the growth of sulfide particles and prevent them from agglomeration, leading to the formation of ultrafine and highly dispersed sulfide of ∼5 nm, which enables the exposure of abundant active sites. Meanwhile, the Co atom doping enhanced the adsorption of the catalyst towards hydrogen, thereby improving its intrinsic activity. As a result, the electrode exhibited outstanding catalytic activity for the HER in acid electrolyte, manifesting a current density of 10 mA cm−2 at an overpotential of 92 mV and a small Tafel slope of 59 mV dec−1.

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Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Catalystmentioning

confidence: 99%

Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

Huang

Liu

et al. 2019

ChemCatChem

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“…Li group has embedded FeP nanoparticles in the pores of ordered mesoporous carbon-coated carbon cloth (FeP@OMC/CC) for HER. [297] The channel showed confinement effect to the growth of FeP crystal. Numerous FeP nanoparticles with particles less than 5 nm were found in mesopores.…”

Section: Develop Noble-metal-free Catalyst For Water Electrolysismentioning

confidence: 98%

“…From the perspective of support material, mesoporous carbons improve the performance of these catalysts by exposing more active sites, disperse and stabilize nanoparticles. Li group has embedded FeP nanoparticles in the pores of ordered mesoporous carbon‐coated carbon cloth (FeP@OMC/CC) for HER [297] . The channel showed confinement effect to the growth of FeP crystal.…”

Section: Water Electrolysismentioning

confidence: 99%

Mesoporous Carbon Materials for Electrochemical Energy Storage and Conversion

Yuan

Gao

et al. 2022

ChemElectroChem

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To meet the high‐speed commercialization demands of electrochemical energy storage and conversion devices, the development of high‐performance and low‐cost electrode materials is urgently necessary. Mesoporous carbon, which shows excellent intrinsic characteristics and flexible structure, has raised a surge of interest recently since it offers opportunities for improving the energy or power density and durability as well as reducing the cost of electrodes. In this paper, we first review primary methods for preparing mesoporous carbons. Next, the obstacles in lithium batteries, supercapacitors, proton exchange membrane fuel cells and water electrolyzers are analyzed and the recent progresses of mesoporous carbon based electrode designs in solving these obstacles are systematically introduced. Finally, we outline current challenges and future directions of developing mesoporous carbon based electrode materials in electrochemical energy storage and conversion devices. In creating this review, we hope to give a succinct introduction to the mesoporous carbon and provide meaningful references for its future research.

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“…In general, the bulk TMPs prepared by a solid-state reaction usually have a metal-rich structure, low catalytically active surface area, and sluggish electrolyte diffusion . The ultrafine nanoparticles produced by a solution-phase reaction often exhibit phosphorus-rich amorphous phases with low crystallinity and conductivity, and inevitably suffer from aggregation due to their high surface energy . Thereby, the supported TMPs were prepared from the reduction of metal phosphates by H 2 or carbon at a high temperature of ≥900 °C to increase the crystallinity and conductivity, minimize the particle size, and afford the additional exposed active sites for catalysis. − In our previous work, the Ni 2 P/C has been prepared by carbothermal reduction assisted phosphorization of Ni 2 P 2 O 7 and NiO at 900 °C using carbon as a reducer and conductive substrate for the first time, which demonstrated extraordinary electrocatalytic performance as a CE catalyst in dye-sensitized solar cells .…”

Section: Introductionmentioning

confidence: 99%

Molecular-Level Synthesis of Cobalt Phosphide Nanocrystals Confined in Highly Nitrogen-Doped Mesoporous Carbon Electrocatalyst for Highly Efficient Dye-Sensitized Solar Cells

Chen

Shao

Dong

et al. 2020

ACS Sustainable Chem. Eng.

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Developing an efficient synthetic approach for the accurate synthesis of nonprecious metal counter electrode (CE) electrocatalysts with superior catalytic activity and electrochemical stability is critically important for the commercial application of dye-sensitized solar cells (DSSCs). In this study, a new molecular-level synthetic strategy was innovatively developed by copolymerization of melamine and resorcinol with formaldehyde under specific pH conditions and their hydrothermal cooperative assembly with organic–inorganic cobalt phosphate and F127 to construct the high-molecular-weight EDTMPA-Co/melamine-formaldehyde-resorcinol resin/F127 copolymer with good thermal stability and compositional homogeneity. The subsequent carbothermal reduction of EDTMPA-Co using melamine-formaldehyde-resorcinol resin as carbon–nitrogen cosources and F127 as a soft template contributed to the accurate synthesis of uniformly dispersed cobalt phosphide nanoparticles incorporated in a highly nitrogen-doped mesoporous carbon (CoP/NMC) catalyst for the first time. It was found that the abundant mesopores, high-nitrogen-content conductive carbon walls (12.8 atom %), and numerous exposed CoP nanoparticles were creatively formed in the resultant CoP/NMC hybrid, which greatly accelerated the electrolyte/electron transportation and supplied sufficient ion-accessible electrocatalytic nanoactive sites for catalysis. When applied as a CE catalyst, the CoP/NMC hybrid revealed a strong synergistic effect in adsorption and catalytic reduction of triiodide ions, and the CoP/NMC reached a low charge transfer resistance (R ct) of 1.35 Ω. As a consequence, the CoP/NMC CE assembled DSSC delivered a high photo-to-electricity conversion efficiency (η) of 8.53% and exceptional long-term electrochemical stability with a remnant efficiency of 7.80% after 200 h of illumination, outperforming the state-of-the-art Pt. The catalytic mechanism of CoP/NMC CE toward triiodide reduction was studied by density functional theory calculations, which revealed that the relative energy for breaking the I–I bond was significantly improved by chemisorption-induced formation of Co–I covalent bonds between the triiodide intermediate and Coσ+ atoms in the exposed CoP nanoactive sites, and the electrocatalytic reduction of I2* to I–* was substantially facilitated.

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Three‐Dimensional Cathode Constructed through Confined‐Growth of FeP Nanocrystals in Ordered Mesoporous Carbon Film Coated on Carbon Cloth for Efficient Hydrogen Production

Cited by 8 publications

References 34 publications

Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

Ultrafine Cobalt‐Doped Iron Disulfide Nanoparticles in Ordered Mesoporous Carbon for Efficient Hydrogen Evolution

Mesoporous Carbon Materials for Electrochemical Energy Storage and Conversion

Molecular-Level Synthesis of Cobalt Phosphide Nanocrystals Confined in Highly Nitrogen-Doped Mesoporous Carbon Electrocatalyst for Highly Efficient Dye-Sensitized Solar Cells

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