Hierarchical meso-macroporous LaMnO3 electrode material for rechargeable zinc–air batteries

Lee, Yi‐Cheng; Peng, Po-Yang; Chang, Wen‐Sheng; Huang, Chao-Ming

doi:10.1016/j.jtice.2014.05.023

Cited by 23 publications

(8 citation statements)

References 23 publications

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“…Several systems for fundamental studies or as prototypes exist but only few have reached commercial stage. Typical MABs include Zn/O2, [1] Li/O2, [2] Na/O2, [3] K/O2, [4] Mg/O2, [5] Ca/O2, [6] Al/O2, [7] Si/O2, [8] and Fe/O2 [9]. In nonaqueous systems during the discharge cycle, the metal oxidises and its ions migrate through the electrolyte to the gas diffusion electrode (GDE) where they form a solid oxide with the reduced oxygen.…”

Section: Introductionmentioning

confidence: 99%

A high-performance, bifunctional oxygen electrode catalysed with palladium and nickel-iron hexacyanoferrate

McKerracher

Figueredo-Rodríguez

León

et al. 2016

Electrochimica Acta

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The development of air-breathing cathodes, which utilise atmospheric oxygen, enables the construction of lightweight, high energy density metal-air batteries and fuel cells. Air electrodes can be very lightweight and thin because the active material, oxygen, does not need to be stored inside the cell. However, air electrodes are restricted by poor reaction kinetics and low activity of many catalysts towards the oxygen evolution and reduction reactions. In addition, it is a challenge to maintain chemical and mechanical stability of the catalyst and supporting materials at oxidising currents under the strong alkaline conditions commonly used, and gas evolution. This paper reports a novel bifunctional oxygen electrode with remarkable stability, able to perform at current densities up to 1,000 mA cm -2 and withstand 3,000 cycles continuously. The electrode is catalysed by a mixture of Pd/C and mixed nickel-iron hexocyanoferrate, which have high activities towards the ORR and OER reactions, respectively.

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Section: Introductionmentioning

confidence: 99%

A high-performance, bifunctional oxygen electrode catalysed with palladium and nickel-iron hexacyanoferrate

McKerracher

Figueredo-Rodríguez

León

et al. 2016

Electrochimica Acta

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“…in metal-air batteries [1][2][3] and for combustion of volatile organic compounds in the abatement of exhaust gases [4,5]. Among them, La 1-x Sr x MnO 3 (x = 0.2-0.8) materials showed the reasonable catalytic activity for ORR/OER and for combustion of volatile organic compounds [6][7][8].…”

mentioning

confidence: 99%

“…In order to further increase their catalytic activity, the use of polymeric material as a soft template for the preparation of porous perovskite oxides has also received great interest. Dai et al [17][18][19] reported that poly(methyl methacrylate) (PMMA) microspheres are good soft template for the preparation of three dimensionally ordered macroporous (3DOM) perovskite oxides (LaMnO 3 and La 0.6 Sr 0.4 MnO 3 ), of which macropore sizes and surface areas were 165 nm and 40 m 2 /g, respectively. And they found that the 3DOM La 0.6 Sr 0.4 MnO 3 displayed better catalytic performance for methane combustion than that of the bulk La 0.6 Sr 0.4 MnO 3 , due to the larger surface area of 3DOM La 0.6 Sr 0.4 MnO 3 .…”

mentioning

confidence: 99%

A modified sol–gel method for low-temperature synthesis of homogeneous nanoporous La1−x Sr x MnO3 with large specific surface area

Zhuang

Liu

Zeng

et al. 2015

J Sol-Gel Sci Technol

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A modified sol-gel (MSG) method was developed to synthesize perovskite La 1-x Sr x MnO 3 (x = 0.2, 0.4, 0.6, 0.8) with large specific surface area that allows for control of their particle size from the micrometer level to the nanometer level with novel nanoporous structure. The MSG method utilized carbon black (Vulcan XC-72R) as a poreforming material during the preparation process. Two important process parameters, the calcination temperature and the pore former material addition, were investigated to control the size of the La 1-x Sr x MnO 3 particles. The phase evolution of La 1-x Sr x MnO 3 powders was investigated by thermogravimetric analysis (TG/DSC) and X-ray diffraction pattern. The results showed that the pure La 0.6 Sr 0.4 MnO 3 phase has been obtained at about 550°C in air, which is lowered around 150°C comparing to conventional sol-gel method. In scanning electron microscope studied, it presented novel homogeneous nanoporous morphology with the average particle size from 30 to 100 nm. Based on the Brunauer-Emmett-Teller method analysis, the specific surface area of La 1-x Sr x MnO 3 was significantly influenced by the calcination temperature, the pore former material addition and the strontium content. The largest specific surface area of La 0.2 Sr 0.8 MnO 3 reached 114.3 m 2 /g. Graphical abstract

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“…The soft‐templating method employs the self‐assembly of amphiphilic molecules (e.g., block copolymers and surfactants), which can be rationally tuned for designing perovskite structures. For example, microporous La 0.8 Sr 0.2 MnO 3 and meso‐macroporous LaMnO 3 perovskites were synthesized by using soft templates of cetrimonium bromide (CTAB) and Pluronic P123 triblock copolymer, respectively . While a soft template is relatively easier to eliminate, morphology control of the target products appears difficult to acquire.…”

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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Hierarchical meso-macroporous LaMnO3 electrode material for rechargeable zinc–air batteries

Cited by 23 publications

References 23 publications

A high-performance, bifunctional oxygen electrode catalysed with palladium and nickel-iron hexacyanoferrate

A high-performance, bifunctional oxygen electrode catalysed with palladium and nickel-iron hexacyanoferrate

A modified sol–gel method for low-temperature synthesis of homogeneous nanoporous La1−x Sr x MnO3 with large specific surface area

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

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