Synthesis of carbon nanotubes on La0.6Sr0.4CoO3 as substrate

Thiele, Doreen; Colmenarejo, E. Lopez-Camacho; Grobéty, Bernard; Züttel, Andreas

doi:10.1016/j.diamond.2008.08.001

Cited by 20 publications

(9 citation statements)

References 27 publications

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“…However, one severe challenge arises regarding the physical origin of these catalysts' high activity and stability, mainly because of the changed structure of the perovskite substrates after the formation of CNTs. Through carefully tuning the synthetic conditions for CVD, the perovskite structure can remain intact as observed in a recent report . This can offer deeper insights into the synergistic effect between perovskite oxides and CNTs, and may also lead to further enhanced catalytic activity since a well‐preserved perovskite is expected to outperform a broken one.…”

Section: Nanostructured Perovskites For Electrocatalysis‐based Energymentioning

confidence: 81%

“…On the other hand, the catalytic activity is expected to be much better if the perovskite structure can be preserved after the formation of CNTs. Thiele et al demonstrated that the La 0.6 Sr 0.4 CoO 3 perovskite structure could remain intact during the growth of CNTs by fluidized bed CVD when the temperature was kept below 700 °C and an iron nitrate solution was introduced as the catalyst …”

Section: Synthetic Methods Of Nanostructured Perovskitesmentioning

confidence: 99%

“…Thiele et al demonstrated that the La 0.6 Sr 0.4 CoO 3 perovskite structure could remain intact during the growth of CNTs by fluidized bed CVD when the temperature was kept below 700 °C and an iron nitrate solution was introduced as the catalyst. [106]…”

Section: Chemical Vapor Depositionmentioning

confidence: 99%

“…Through carefully tuning the synthetic conditions for CVD, the perovskite structure can remain intact as observed in a recent report. [106] This can offer deeper insights into the synergistic effect between perovskite oxides and CNTs, and may also lead to further enhanced catalytic activity since a well-preserved perovskite is expected to outperform a broken one. On the other hand, using perovskites having well-defined compositions as well as characteristic morphologies as substrate materials in the CVD synthesis is believed to produce perovskite/ CNTs nanocomposites with even more powerful functionality.…”

Section: Zn-air Batteriesmentioning

confidence: 99%

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Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

et al. 2018

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Perovskite oxides hold great promise as efficient electrocatalysts for various energy‐related applications owing to their low cost, flexible structure, and high intrinsic catalytic activity. However, conventional synthetic methods can only obtain perovskite catalysts with large particle sizes, small surface areas, and few morphological features, leading to limited catalytic activity and thus posing a major challenge toward real‐world applications. Reducing the size of bulk perovskites down to the nanosize represents an efficient way to improve the electrocatalytic performance. A comprehensive overview of recent progress in the nanostructuring of perovskites for catalyzing several key reactions in metal–air batteries, water splitting, and solid oxide fuel cells is provided. A range of synthetic protocols for making perovskite nanostructures are summarized, followed by an emphasis on how each method can be tailored to obtain high‐performing perovskite nanocatalysts. These recent advances highlight the enormous potential of nanosized perovskites for facilitating the electrocatalytic reactions. The remaining challenges and future directions are pointed out for the development of next‐generation perovskite‐based nanostructured catalysts.

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Section: Nanostructured Perovskites For Electrocatalysis‐based Energymentioning

confidence: 81%

Section: Synthetic Methods Of Nanostructured Perovskitesmentioning

confidence: 99%

Section: Chemical Vapor Depositionmentioning

confidence: 99%

Section: Zn-air Batteriesmentioning

confidence: 99%

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Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

et al. 2018

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“…Recent calculations and experiments have suggested that nano-structured substrates decorated with nano-sized catalysts are also very promising. 84,112,113) For example, if Ptclusters are deposited onto a graphene support, the oxygen-reduction activity is observed to be much higher. 120) Therefore, there are good grounds for the implementation of carbon-based nanomaterials; e.g., carbon nanotubes and graphene as support materials [114][115][116] to accommodate a larger amount of Li oxide.…”

Section: Survey Of Catalyst Research In Li-air Cellsmentioning

confidence: 99%

Practical Challenges Associated with Catalyst Development for the Commercialization of Li-air Batteries

Park

Kim

Seo

et al. 2014

Journal of Electrochemical Science and Technology

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ABSTRACT:Li-air cell is an exotic type of energy storage and conversion device considered to be half battery and half fuel cell. Its successful commercialization highly depends on the timely development of key components. Among these key components, the catalyst (i.e., the core portion of the air electrode) is of critical importance and of the upmost priority. Indeed, it is expected that these catalysts will have a direct and dramatic impact on the Li-air cell's performance by reducing overpotentials, as well as by enhancing the overall capacity and cycle life of Li-air cells. Unfortunately, the technological advancement related to catalysts is sluggish at present. Based on the insights gained from this review, this sluggishness is due to challenges in both the commercialization of the catalyst, and the fundamental studies pertaining to its development. Challenges in the commercialization of the catalyst can be summarized as 1) the identification of superior materials for Li-air cell catalysts, 2) the development of fundamental, material-based assessments for potential catalyst materials, 3) the achievement of a reduction in both cost and time concerning the design of the Li-air cell catalysts. As for the challenges concerning the fundamental studies of Li-air cell catalysts, they are 1) the development of experimental techniques for determining both the nano and micro structure of catalysts, 2) the attainment of both repeatable and verifiable experimental characteristics of catalyst degradation, 3) the development of the predictive capability pertaining to the performance of the catalyst using fundamental material properties. Therefore, under the current circumstances, it is going to be an extremely daunting task to develop appropriate catalysts for the commercialization of Li-air batteries; at least within the foreseeable future. Regardless, nano materials are expected to play a crucial role in this field.

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Nano Aspects of Metal–Air Batteries

Arai

Doi

2013

Nanoscale Technology for Advanced Lithium Batteries

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Synthesis of carbon nanotubes on La0.6Sr0.4CoO3 as substrate

Cited by 20 publications

References 27 publications

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

Recent Advances in Novel Nanostructuring Methods of Perovskite Electrocatalysts for Energy‐Related Applications

Practical Challenges Associated with Catalyst Development for the Commercialization of Li-air Batteries

Nano Aspects of Metal–Air Batteries

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