Carbon fibers supported NiSe nanowire arrays as efficient and flexible electrocatalysts for the oxygen evolution reaction

Han, Xiuxiu; Tong, Xili; Wu, Gangpin; Yang, Nianjun; Guo, Xiang‐Yun

doi:10.1016/j.carbon.2017.12.003

Cited by 69 publications

(25 citation statements)

References 40 publications

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“…[33] The smaller the Ta fel slope, the greater the change in the OER rate with an increase of overpotential. [34] The Am-CFDH/NCNTs hybrid owns the lowestT afel slope of 56.88 mV dec À1 among that of Am-CFDH/CNTs( 80.35 mV dec À1 ), Am-CFDH (64.90 mV dec À1 ), NCNTs( 153.65 mV dec À1 ), and CNTs (260.77 mV dec À1 ), indicating that the target catalyst has satisfactory OERk inetics. ChemSusChem 2019ChemSusChem , 12,2679ChemSusChem -2688 www.chemsuschem.org…”

Section: Resultsmentioning

confidence: 94%

“…In addition, the OER kinetics of electrocatalysts are elucidated by the Tafel plots, which are converted by the Tafel equation ( η = a + b log | j |; where η is the overpotential, b is the Tafel slope, and j is the current density) in Figure b . The smaller the Tafel slope, the greater the change in the OER rate with an increase of overpotential . The Am‐CFDH/NCNTs hybrid owns the lowest Tafel slope of 56.88 mV dec −1 among that of Am‐CFDH/CNTs (80.35 mV dec −1 ), Am‐CFDH (64.90 mV dec −1 ), NCNTs (153.65 mV dec −1 ), and CNTs (260.77 mV dec −1 ), indicating that the target catalyst has satisfactory OER kinetics.…”

Section: Resultsmentioning

confidence: 99%

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Amorphous CoFe Double Hydroxides Decorated with N‐Doped CNTs for Efficient Electrochemical Oxygen Evolution

Liu

et al. 2019

ChemSusChem

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The development and design of a highly active and affordable nanostructured material as an efficient electrocatalyst for electrochemical oxygen evolution is a pressing necessity to realize industrial production of hydrogen by water electrolysis. Amorphous nanocomposites have recently attracted interest owing to their superior electrocatalytic activity derived from their unique structure. Herein, amorphous CoFe double hydroxides (Am‐CFDH) decorated with N‐doped carbon nanotubes (NCNTs) is synthesized by a facile and simple one‐pot approach under room temperature. Through electrochemical measurement, the bare Am‐CFDH nanocomposite already exhibits a comparable oxygen evolution reaction (OER) activity to the commercial IrO2 catalyst on account of its amorphous nature and the interaction between Co and Fe. The introduced NCNTs can provide better electrical conductivity, more anchoring sites, and functional groups for enhancing the transfer of electrons and reactants, preventing the agglomeration of Am‐CFDH to expose more active sites, and improving the synergistic effect between Am‐CFDH and NCNTs. Thus, the Am‐CFDH/NCNTs hybrid displays favorable durability beyond 20 h and advanced OER activity, owning a small overpotential of 270 mV at 10 mA cm−2 and a low Tafel slope of 56.88 mV dec−1 in alkaline medium.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Amorphous CoFe Double Hydroxides Decorated with N‐Doped CNTs for Efficient Electrochemical Oxygen Evolution

Liu

et al. 2019

ChemSusChem

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“…Novel carbon‐based nanomaterials, including graphene,, carbon nanotubes (CNTs),, graphitic carbon nitride, carbon fibers (CFs), and biomass‐derived carbon, are being actively investigated as new anode materials for high performance LIBs. Among these materials, CFs have triggered tremendous interest in LIB fields owing to their high surface area, structural stability, and good conductivity, which make them an ideal substrate for loading active materials in electrocatalysis, and secondary batteries . Most importantly, CFs can be directly used as a promising anode in providing high capability, excellent rate performance, and superior cyclic stability in LIBs ,.…”

Section: Introductionmentioning

confidence: 99%

Defective Lithium Storage Boosts High Rate and Long‐Life Span of Carbon Fibers

Ouyang

et al. 2019

ChemistrySelect

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Carbonaceous‐based materials have been extensively investigated as anode of lithium ion batteries (LIBs) due to their low‐cost and good stability. However, the charge storage mechanism of graphitic carbon based on insertion/deinsertion of Li+ ions is difficult to meet the needs for high‐performance LIBs because of the low specific capacity and limited rate property, and thus, it is quite necessary to develop novel carbon‐based anode materials beyond traditional energy storage mechanism. Herein, we demonstrate that appropriate thermal treatment endows N‐doped carbon fibers (N‐CFs) with attractive merits in LIB application, and show that N‐CFs with dominated capacitive contribution exhibit superior Li‐storage properties in the aspects of high reversible capacity (864.5 mAh g−1 at 0.1 A g−1), excellent rate capability (212.1 mAh g−1 at a super‐high current density of 20 A g−1), and long‐life span (no capacity decay over 2000 cycles at 5.0 A g−1) in half‐cells. The remarkable Li‐storage performance of N‐CFs can be attributed to the capacitive contribution‐dominated energy storage mechanism.

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“…Care is taken to remove the dissolved oxygen by purging the solution with inert gas before sealing it in the autoclave. In this type of synthesis, ethanol was used as a solvent to obtain NiSe/CFs [ 125 ], and N, N-dimethylformamide to obtain trimetallic NiFeCoSe x /CF cloth materials [ 126 ]. In the electrodeposition method, the chalcogenide compound on carbon support is directly obtained during the electrochemical reaction.…”

Section: Synthesis Of Carbon-based Nanocompositesmentioning

confidence: 99%

Carbon-Based Composites as Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media

et al. 2021

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This review paper presents the most recent research progress on carbon-based composite electrocatalysts for the oxygen evolution reaction (OER), which are of interest for application in low temperature water electrolyzers for hydrogen production. The reviewed materials are primarily investigated as active and stable replacements aimed at lowering the cost of the metal electrocatalysts in liquid alkaline electrolyzers as well as potential electrocatalysts for an emerging technology like alkaline exchange membrane (AEM) electrolyzers. Low temperature electrolyzer technologies are first briefly introduced and the challenges thereof are presented. The non-carbon electrocatalysts are briefly overviewed, with an emphasis on the modes of action of different active phases. The main part of the review focuses on the role of carbon–metal compound active phase interfaces with an emphasis on the synergistic and additive effects. The procedures of carbon oxidative pretreatment and an overview of metal-free carbon catalysts for OER are presented. Then, the successful synthesis protocols of composite materials are presented with a discussion on the specific catalytic activity of carbon composites with metal hydroxides/oxyhydroxides/oxides, chalcogenides, nitrides and phosphides. Finally, a summary and outlook on carbon-based composites for low temperature water electrolysis are presented.

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Carbon fibers supported NiSe nanowire arrays as efficient and flexible electrocatalysts for the oxygen evolution reaction

Cited by 69 publications

References 40 publications

Amorphous CoFe Double Hydroxides Decorated with N‐Doped CNTs for Efficient Electrochemical Oxygen Evolution

Amorphous CoFe Double Hydroxides Decorated with N‐Doped CNTs for Efficient Electrochemical Oxygen Evolution

Defective Lithium Storage Boosts High Rate and Long‐Life Span of Carbon Fibers

Carbon-Based Composites as Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media

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