Mesoporous three dimension NiCo2O4/graphene composites fabricated by self-generated sacrificial template method for a greatly enhanced specific capacity

Yao, Mengqi; Wang, Ni; Yin, Jialin; Hu, Wencheng

doi:10.1007/s10854-017-6898-2

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…We can see that removal of Zn leads to the larger surface area in Table S1 in the Supporting Information. From the shape of the adsorption‐desorption isotherms, it can be deduced that NiCoFe‐PS nanorod/NF presents the IV‐isotherm . The large surface area is attributed to rational design involving hydrothermal electrodeposition and the use of self‐generated template.…”

Section: Resultsmentioning

confidence: 99%

Self‐Supportive Mesoporous Ni/Co/Fe Phosphosulfide Nanorods Derived from Novel Hydrothermal Electrodeposition as a Highly Efficient Electrocatalyst for Overall Water Splitting

Yao

Sun

et al. 2019

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Low cost and highly efficient bifuctional catalysts for overall water electrolysis have drawn considerable interests over the past several decades. Here, rationally synthesized mesoporous nanorods of nickel–cobalt–iron–sulfur–phosphorus composites are tightly self‐supported on Ni foam as a high‐performance, low cost, and stable bifunctional electrocatalyst for water electrolysis. The targeted designing and rational fabrication give rise to the nanorod‐like morphology with large surface area and excellent conductivity. The NiCoFe‐PS nanorod/NF can reach 10 mA cm−2 at a small overpotential of 195 mV with a Tafel slope of 40.3 mV dec−1 for the oxygen evolution reaction and 97.8 mV with 51.8 mV dec−1 for the hydrogen evolution reaction. Thus, this bifunctional catalyst shows low potentials of 1.52 and 1.76 V at 10 and 50 mA cm−2 toward overall water splitting with excellent stability for over 200 h, which are superior to most non‐noble metal‐based bifunctional electrocatalysts recently. This work provides a new strategy to fabricate multiple metal‐P/S composites with the mesoporous nanorod‐like structure as bifunctional catalysts for overall water splitting.

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Section: Resultsmentioning

confidence: 99%

Self‐Supportive Mesoporous Ni/Co/Fe Phosphosulfide Nanorods Derived from Novel Hydrothermal Electrodeposition as a Highly Efficient Electrocatalyst for Overall Water Splitting

Yao

Sun

et al. 2019

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“…Peaks around 781.85 and 797.1 eV are associated with Co 2+ , whereas those at 780.4 and 795.3 eV belong to Co 3+ . , The Ni 2p also consists of Ni 2+ and Ni 3+ spin–orbit doublets and also two shakeup satellites (Figure b). Peaks around 855.4 and 872.9 eV belong to Ni 2+ , whereas the peaks at 856.6 and 874.6 eV are indexed to Ni 3+ . , The peaks around 712.03, 717.87, and 724.12 eV are associated with Fe 3+ , which also has a shakeup satellite (Figure c). As shown in Figure d, the O 1s spectrum has a sharp peak at 529.7 eV.…”

Section: Resultsmentioning

confidence: 99%

“…Peaks around 855.4 and 872.9 eV belong to Ni 2+ , whereas the peaks at 856.6 and 874.6 eV are indexed to Ni 3+ . 29,30 The peaks around 712.03, 717.87, and 724.12 eV are associated with Fe 3+ , which also has a shakeup satellite (Figure 3c). As shown in Figure 3d, the O 1s spectrum has a sharp peak at 529.7 eV.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of NiCo_2–xFe_xO₄ Nanotubes/Carbon Textiles Composites for High-Performance Electrochemical Energy Storage Devices

Liu

Wang

Cheng

et al. 2018

ACS Appl. Nano Mater.

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The use of advanced pseudocapacitive electrode for improved energy density of supercapacitors has been given much attention recently. Herein, we develop a promising electrode architecture that contains carbon textiles uniformly covered with NiCo 2−x Fe x O 4 nanotubes, which are directly used as electrode materials in energy storage devices through a simple and feasible twostep method, and then a short period of post annealing treatment was adopted. The prepared NiCo 2−x Fe x O 4 nanotubes/carbon textiles composite electrode possesses a high specific capacitance of 2057 F g −1 when the discharging current is 1 A g −1 and a superior long-life stability with 90.32% retention of specific capacitance after 3000 cycles. The increased capacitive property is ascribed to the increased specific surface area, the vacancy formation, and the unique nanotube structure.

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“…The low R ct can provide a faster OER kinetics and significantly improve the OER properties, such as lower overpotential and excellent stability. To our known, low R ct can be attributed to combining electroactive material with the conductive substratre and abundant active sites which create charge transport pathways and improve electron transport [31][32][33].…”

Section: Xrd Analysis Of Nicke-iron Alloy Filmmentioning

confidence: 94%

Preparation and Characterization of Nicke-iron Alloy Film as Freestanding Electrode for Oxygen Evolution Reaction

Yao

Chen

2018

MATEC Web Conf.

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Abstract. This work reports the porous nicke-iron alloy film supported on stainless steel mesh as freestanding electrode for enhanced oxygen evolution reaction (OER) catalyst prepared from an one step electrodeposition method. Results indicated that the porous nickle-iron alloy film exhibits a low overpotential of 270 mV at 10 mA cm −2 and excellent electroconductibility. The superior OER properties can be attributed to its novel synthetic process, conductive substrate and porous structure. This work will provide a new strategy to fabricate alloy film for OER electrocatalyst.

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Mesoporous three dimension NiCo2O4/graphene composites fabricated by self-generated sacrificial template method for a greatly enhanced specific capacity

Cited by 9 publications

References 39 publications

Self‐Supportive Mesoporous Ni/Co/Fe Phosphosulfide Nanorods Derived from Novel Hydrothermal Electrodeposition as a Highly Efficient Electrocatalyst for Overall Water Splitting

Self‐Supportive Mesoporous Ni/Co/Fe Phosphosulfide Nanorods Derived from Novel Hydrothermal Electrodeposition as a Highly Efficient Electrocatalyst for Overall Water Splitting

Facile Synthesis of NiCo_2–xFe_xO₄ Nanotubes/Carbon Textiles Composites for High-Performance Electrochemical Energy Storage Devices

Preparation and Characterization of Nicke-iron Alloy Film as Freestanding Electrode for Oxygen Evolution Reaction

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Mesoporous three dimension NiCo2O4/graphene composites fabricated by self-generated sacrificial template method for a greatly enhanced specific capacity

Cited by 9 publications

References 39 publications

Self‐Supportive Mesoporous Ni/Co/Fe Phosphosulfide Nanorods Derived from Novel Hydrothermal Electrodeposition as a Highly Efficient Electrocatalyst for Overall Water Splitting

Self‐Supportive Mesoporous Ni/Co/Fe Phosphosulfide Nanorods Derived from Novel Hydrothermal Electrodeposition as a Highly Efficient Electrocatalyst for Overall Water Splitting

Facile Synthesis of NiCo2–xFexO4 Nanotubes/Carbon Textiles Composites for High-Performance Electrochemical Energy Storage Devices

Preparation and Characterization of Nicke-iron Alloy Film as Freestanding Electrode for Oxygen Evolution Reaction

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Facile Synthesis of NiCo_2–xFe_xO₄ Nanotubes/Carbon Textiles Composites for High-Performance Electrochemical Energy Storage Devices