Preparation of homogeneous nanoporous La0.6Ca0.4CoO3 for bi-functional catalysis in an alkaline electrolyte

Zhuang, Shuxin; Huang, Changsheng; Huang, Kelong; Hu, Xi; Tu, Feiyue; Huang, Hongfeng

doi:10.1016/j.elecom.2011.01.014

Cited by 27 publications

(18 citation statements)

References 16 publications

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“…The heating temperature and duration varies with different metal precursors; the details are described elsewhere . Although the co‐precipitation method is able to yield nanosized oxide particles as small as 10 nm, their phases usually are not very pure and show relatively low mass activity. The disparities of hydrolysis rates for different metal cations could explain why this happens .…”

Section: Perovskite Oxide Catalystsmentioning

confidence: 99%

“…More importantly, the calcination temperature and atmosphere are important to yield the desired final catalyst performance . Progressively, well‐dispersed nanoporous La 0.6 Ca 0.4 CoO 3 perovskites with surface area as high as 210 m 2 g −1 have been prepared via a modified amorphous citrate precursor method using Vulcan XC‐72R as a pore‐forming material …”

Section: Perovskite Oxide Catalystsmentioning

confidence: 99%

See 1 more Smart Citation

Bifunctional Perovskite Oxide Catalysts for Oxygen Reduction and Evolution in Alkaline Media

Gupta

Kellogg

et al. 2015

Chemistry An Asian Journal

195

134

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Oxygen electrocatalysis, namely of the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), governs the performance of numerous electrochemical energy systems such as reversible fuel cells, metal-air batteries, and water electrolyzers. However, the sluggish kinetics of these two reactions and their dependency on expensive noble metal catalysts (e.g, Pt or Ir) prohibit the sustainable commercialization of these highly innovative and in-demand technologies. Bifunctional perovskite oxides have emerged as a new class of highly efficient non-precious metal catalysts (NPMC) for oxygen electrocatalysis in alkaline media. In this review, we discuss the state-of-the-art understanding of bifunctional properties of perovskites with regards to their OER/ORR activity in alkaline media and review the associated reaction mechanisms on the oxides surface and the related activity descriptors developed in the recent literature. We also summarize the present strategies to modify their electronic structure and to further improve their performance for the ORR/OER through highlighting the new concepts relating to the role of surface redox chemistry and oxygen deficiency of perovskite oxides for the ORR/OER activity. In addition, we provide a brief account of recently developed advanced perovskite-nanocarbon hybrid bifunctional catalysts with much improved performances.

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Section: Perovskite Oxide Catalystsmentioning

confidence: 99%

Section: Perovskite Oxide Catalystsmentioning

confidence: 99%

Bifunctional Perovskite Oxide Catalysts for Oxygen Reduction and Evolution in Alkaline Media

Gupta

Kellogg

et al. 2015

Chemistry An Asian Journal

195

134

View full text Add to dashboard Cite

show abstract

“…Although nanosized perovskites can be easily fabricated by the sol–gel process, their Brunauer–Emmet–Teller (BET) surface area appears to be not high enough, which is in the range of 10–30 m 2 g −1 . Zhuang et al modified the sol–gel process by introducing carbon black as a pore‐forming agent and obtained nanoporous perovskites with a BET surface area as large as 100–200 m 2 g −1 …”

Section: Synthetic Methods Of Nanostructured Perovskitesmentioning

confidence: 99%

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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“…A modified sol-gel method for the preparation of large surface area perovskite was reported by Zhuang et al [77]. In their synthesis, activated carbon was used as porogen and pre-mixed with a citric acid solution.…”

Section: Active Perovskite Oxygen Electrocatalystsmentioning

confidence: 99%

Recent Advances in Oxygen Electrocatalysts Based on Perovskite Oxides

Chen

Han

et al. 2019

Nanomaterials

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Electrochemical oxygen reduction and oxygen evolution are two key processes that limit the efficiency of important energy conversion devices such as metal–air battery and electrolysis. Perovskite oxides are receiving discernable attention as potential bifunctional oxygen electrocatalysts to replace precious metals because of their low cost, good activity, and versatility. In this review, we provide a brief summary on the fundamentals of perovskite oxygen electrocatalysts and a detailed discussion on emerging high-performance oxygen electrocatalysts based on perovskite, which include perovskite with a controlled composition, perovskite with high surface area, and perovskite composites. Challenges and outlooks in the further development of perovskite oxygen electrocatalysts are also presented.

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Preparation of homogeneous nanoporous La0.6Ca0.4CoO3 for bi-functional catalysis in an alkaline electrolyte

Cited by 27 publications

References 16 publications

Bifunctional Perovskite Oxide Catalysts for Oxygen Reduction and Evolution in Alkaline Media

Bifunctional Perovskite Oxide Catalysts for Oxygen Reduction and Evolution in Alkaline Media

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

Recent Advances in Oxygen Electrocatalysts Based on Perovskite Oxides

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