Directed synthesis of carbon nanotube arrays based on layered double hydroxides toward highly-efficient bifunctional oxygen electrocatalysis

Li, Zhenhua; Shao, Mingfei; Yang, Qun; Tang, Yang; Wei, Min; Evans, David G.; Duan, Xue

doi:10.1016/j.nanoen.2017.05.016

Cited by 129 publications

(86 citation statements)

References 44 publications

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“…From this view of point, constructing LDH‐INEs with controllable morphology and components is crucial required. Toward this goal, a series of creative synthetic approaches, such as template‐directed growth, hydro/solvothermal method, and electrochemical deposition, have been widely employed to construct LDH‐INEs, including nanosheet arrays, hierarchical core–shell arrays, and hollow structured arrays on various substrates, and achieved excellent electrochemical performance for energy‐related applications …”

Section: Ldh‐inesmentioning

confidence: 99%

“…Owing to the robust micro–nano structure, large specific surface area, and easily to be structured, LDH‐based nanoarrays could not only be active materials but also be ideal supports for loading other active materials, especially for materials that hardly be nanostructured . Shao et al . reported a free‐standing 3D nitrogen‐doped carbon nanotube arrays (3D NCNT array) with CoAl‐LDH nanoarrays as support and catalyst and metal–organic framework (MOF) as carbon and nitrogen sources ( Figure a–c).…”

Section: Ldh‐inesmentioning

confidence: 99%

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Integrated Nanostructural Electrodes Based on Layered Double Hydroxides

Xie

Song

et al. 2019

Energy & Environ Materials

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Layered double hydroxides (LDHs), as a class of typical two‐dimensional materials, have sparked increasing interest in the field of energy storage and conversion. In the last few years, the research about LDHs as electrode active materials has seen much progress in terms of structure designing, material synthesis, properties tailoring, and applications. In this review, we focus on the integrated nanostructural electrodes (INEs) construction using LDH materials, including pristine LDH‐INEs, hybrid LDH‐INEs, and LDH derivative‐INEs, as well as the performance advantages and applications of LDH‐INEs. Moreover, in the final section, the insights about challenges and prospective in this promising research field were concluded, especially in regulation of intrinsic activity and uncovering of structure–activity relationship, which would push forward the development of this fast‐growing field.

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Section: Ldh‐inesmentioning

confidence: 99%

Section: Ldh‐inesmentioning

confidence: 99%

Integrated Nanostructural Electrodes Based on Layered Double Hydroxides

Xie

Song

et al. 2019

Energy & Environ Materials

Self Cite

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“…5 In addition, it is difficult for the same catalyst to synchronously accelerate ORR/OER activities, which is highly desirable yet a great challenge. 6,7 In the past decades, some alternative materials have been developed, and they exhibit bifunctional catalytic activities toward both OER and ORR. [5][6][7][8] For example, carbon nanomaterials (especially N-doped carbons with a break of electroneutrality and charge of local change density) have demonstrated promising OER and ORR activities and stabilities due to their low cost, adjustable surface chemistry and high electrical conductivity.…”

Section: -3mentioning

confidence: 99%

“…6,7 In the past decades, some alternative materials have been developed, and they exhibit bifunctional catalytic activities toward both OER and ORR. [5][6][7][8] For example, carbon nanomaterials (especially N-doped carbons with a break of electroneutrality and charge of local change density) have demonstrated promising OER and ORR activities and stabilities due to their low cost, adjustable surface chemistry and high electrical conductivity. 9 Moreover, recent evidence indicates that the ORR active sites are carbon atoms next to pyridinic nitrogen with Lewis basicity in the N-doped nanocarbons.…”

Section: -3mentioning

confidence: 99%

Preparation of Co–N carbon nanosheet oxygen electrode catalyst by controlled crystallization of cobalt salt precursors for all-solid-state Al–air battery

et al. 2018

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Production of bifunctional catalysts for catalyzing both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is highly advisable but challenging with respect to the applications of these catalysts in renewable energy conversion and storage technologies. Herein, we prepared highly reactive and stable cobalt-embedded nitrogen-rich carbon nanosheets (Co-N/CNs). Based on density functional theory (DFT) calculations and experiments, the as-prepared Co-N/CNs showed outstanding catalytic activities toward both OER and ORR. The optimized Co-N/CNs-800 catalyst revealed outstanding bifunctional catalytic activities for both ORR and OER with high catalytic efficiency and long-term durability, which were even comparable with those of the state-of-the-art Pt/C and RuO 2 catalysts. Furthermore, we observed that different cobalt salt precursors affected the size of Co nanoparticles, and both ORR and OER catalytic activities displayed completely consistent variations (sulfate < acetate < chloride < nitrate). An all-solid-state Al-air battery device comprising this hybrid catalyst showed superior performance when compared with the device containing the Pt/C catalyst.

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“…To improve the intrinsic conductivity, LDH coupled with carbonaceous materials (graphene, carbon nanotubes, and carbon quantum dots etc.) has been widely explored . Moreover, the introduction of nitrogen dopants in these nanocarbons has been demonstrated as an efficient mean to further improve the dispersion of LDHs and the charge transfer because of the created anchoring sites and enhanced electron‐donor property, respectively …”

Section: Introductionmentioning

confidence: 99%

One‐Step Synthesis of NiFe Layered Double Hydroxide Nanosheet Array/N‐Doped Graphite Foam Electrodes for Oxygen Evolution Reactions

Pan

et al. 2019

ChemistryOpen

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Developing cost‐effective and highly efficient oxygen evolution reaction (OER) electrocatalysts is vital for the production of clean hydrogen by electrocatalytic water splitting. Here, three dimensional nickel‐iron layered double hydroxide (NiFe LDH) nanosheet arrays are in‐situ fabricated on self‐supporting nitrogen doped graphited foam (NGF) via a one‐step hydrothermal process under an optimized amount of urea. The as prepared NiFe LDH/NGF electrode exhibits a remarkable activity toward OER with a low onset overpotential of 233 mV and a Tafel slope of 59.4 mV dec −1 as well as a long‐term durability. Such good performance is attributed to the synergy among the doping effect, the binder‐free characteristic, and the architecture of the nanosheet array.

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Directed synthesis of carbon nanotube arrays based on layered double hydroxides toward highly-efficient bifunctional oxygen electrocatalysis

Cited by 129 publications

References 44 publications

Integrated Nanostructural Electrodes Based on Layered Double Hydroxides

Integrated Nanostructural Electrodes Based on Layered Double Hydroxides

Preparation of Co–N carbon nanosheet oxygen electrode catalyst by controlled crystallization of cobalt salt precursors for all-solid-state Al–air battery

One‐Step Synthesis of NiFe Layered Double Hydroxide Nanosheet Array/N‐Doped Graphite Foam Electrodes for Oxygen Evolution Reactions

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