Nanocrystalline CoSn2-carbon composite electrode prepared by using sonochemistry

Nacimiento, Francisco; Alcántara, Ricardo; Nwokeke, Uche G.; González, José Ramón Perán; Tirado, J.L.

doi:10.1016/j.ultsonch.2011.06.014

Cited by 26 publications

(10 citation statements)

References 21 publications

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“…The resulting CoSn 2 -carbonaceous phase electrode (CoSn 2 @C) shows improved electrochemical behavior and is stable upon cycling (ca. 450 mA h g −1 after 50 cycles) in comparison with reports on pure crystalline CoSn 2 [35].…”

Section: Li-batteries and Li-ion Batteriesmentioning

confidence: 53%

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

Vaitsis¹,

Mechili²,

Argirusis³

et al. 2020

Nanotechnology and the Environment

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Ultrasound (US) technology is already into the research field providing a powerful tool of producing nanomaterials or being implicated in decoration procedures of catalyst supports for energy applications and material production. Toward this concept, low or/and high-frequency USs are used for the production of nanoparticles, the decoration of catalytic supported powders (carbon-based, titania, and alumina) with nanoparticles, and the production of metal-organic frameworks (MOFs). MOFs are porous, crystalline materials, which consist of metal centers and organic linkers. Those structures demonstrate high surface area, open metal sites, and large void space. All the above produced materials are used in heterogeneous catalysis, electrocatalysis, photocatalysis, and energy storage. Batteries and fuel cells are popular systems for electrochemical energy storage, and significant progress has been made in nanostructured energy materials in order to improve these storage devices. Nanomaterials have shown favorable properties, such as enhanced kinetics and better efficiency as catalysts for the oxygen reduction reaction (ORR).

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Section: Li-batteries and Li-ion Batteriesmentioning

confidence: 53%

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

Vaitsis¹,

Mechili²,

Argirusis³

et al. 2020

Nanotechnology and the Environment

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“…The oxide components dominate with a relative intensity of 53.5% and 51.2%, respectively. The Co2p 3/2 was fitted to a peak at 780.8 eV that is ascribed to Co(II), another peak at 777.4 eV that is ascribed to Co(0) . The Co2p 1/2 contain one peak at 796.7 eV which is assigned to oxidized cobalt, while the peak at 792.4 eV is the component of metallic cobalt , .…”

Section: Resultsmentioning

confidence: 99%

“…The Co2p 3/2 was fitted to a peak at 780.8 eV that is ascribed to Co(II), another peak at 777.4 eV that is ascribed to Co(0) . The Co2p 1/2 contain one peak at 796.7 eV which is assigned to oxidized cobalt, while the peak at 792.4 eV is the component of metallic cobalt , . The satellite peaks that result from different final state is accessible through the band structure of CoO .…”

Section: Resultsmentioning

confidence: 99%

“…The Co2p 1/2 contain one peak at 796.7 eV which is assigned to oxidized cobalt, while the peak at 792.4 eV is the component of metallic cobalt , . The satellite peaks that result from different final state is accessible through the band structure of CoO . The presence of oxide component indicated that the surface of the sample is covered by a thin oxide layer resulting from the exposure of sample to atmosphere.…”

Section: Resultsmentioning

confidence: 99%

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Promoting Effect of Tin on Binder‐Free CoSn_x‐B/Ni‐foam Catalysts for Fuel Conversion Efficiency in Direct Borohydride Fuel Cell

Gao

et al. 2019

Fuel Cells

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The anodic activity of anodic catalyst for borohydride oxidation reaction (BOR) and inhibiting the borohydride hydrolysis reaction (BHR) are crucial to development for direct borohydride fuel cells (DBFC). In this paper, binder free CoSnx‐B/Ni‐foam (x = 0, 0.33, 0.5, 1) anode catalysts for BOR were prepared by chemical reduction method. It is found that the tin (Sn) is favor for improving the catalytic activity of cobalt (Co) for BOR, meanwhile, the catalytic activity is in relation to Co/Sn atom ratios. A maximum power density of 158 mW cm−2 of DBFC anodic catalytic is achieved at 293 K using CoSn0.33‐B/Ni‐foam which is 1.58 times that of Co‐B/Ni‐foam (100 mW cm−2). The constant discharge test of DBFCs showed that the specific capacity or fuel conversion efficiency decrease with the catalytic activity increasing. However, for the same electrocatalyst, the fuel conversion efficiency increased with the discharge current grown, indicating that there is a BHR which was independent of electrocatalyst in the discharge process. The results showed that CoSnx‐B/Ni‐foam had superior activity for BOR, suggesting their potential application as anodes in DBFC.

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“…采用其他方法合成的纳米级 Sn-Co-C 材料同样具有较高的比容量 [19,20] , 而通过固相烧结法、溶胶凝胶法等合成的微米级的 Sn-Co-C 材料尽管具有较高的 Sn 含量, 但比容量均不足 400 mAh/g [21～24] . Sn-Co-C 材料的组成除对电极的比容量有影响外, 对循环稳定性也具有重要影响.…”

Section: Chen 等unclassified

Synthesis and Properties of Sn₃₀Co₃₀C₄₀Ternary Alloy Anode Material for Lithium Ion Battery

刘欣¹,

解晶莹²,

赵海雷³

et al. 2013

Acta Chim. Sinica

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With the development of advanced lithium ion batteries, electrode materials with higher capacity are urgently in demand. With respect to the anode materials, Sn-based alloy materials with high theoretical capacity (990 mAh/g) have the potential to replace the traditional, low capacity carbon-based materials. However, the practical application of Sn-based anode materials is severely retarded due to the poor cycling stability of electrode, which is believed to be caused by the pulverization of active particles resulting from the large volume of Sn during lithiation/delithiation process. The Sn-Co-C ternary alloy with amorphous or nano microstructure can overcome this problem and therefore display attractive electrochemical performance, including high capacity and good cycle stability. In the present work, amorphous Sn 30 Co 30 C 40 alloy material was synthesized through a simple and scalable two-step method (carbothermal reduction-high energy ball milling method). CoSn 2 alloy was firstly prepared by the carbothermal reduction route from low cost metal oxide and activated carbon. Then the prepared CoSn 2 were mixed with metal cobalt and graphite in a molar ratio of 3∶3∶8 via a high energy ball milling process to synthesize the final Sn 30 Co 30 C 40 material. The preferential synthesis of CoSn 2 alloy was important to get Sn 30 Co 30 C 40 material with much smaller CoSn grain dispersed in carbon matrix and thus critical to the better electrochemical performance. XRD, SEM, TEM, HR-TEM, S-TEM and electrochemical tests were used to evaluate the structure and electrochemical performance of the CoSn 2 and Sn 30 Co 30 C 40 materials. The synthesized Sn 30 Co 30 C 40 material displayed micro-sized particle morphology, which in fact was composed of 10 nm CoSn grains distributed well in amorphous carbon matrix. The Sn 30 Co 30 C 40 material showed high specific capacity of 550 mAh/g with an initial coulombic efficiency of 80%, good cycling stability and excellent rate-capability. The specific capacity of 430, 380, 280 mAh/g could be achieved at the rate of 1 C, 2 C and 5 C, respectively.

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Nanocrystalline CoSn2-carbon composite electrode prepared by using sonochemistry

Cited by 26 publications

References 21 publications

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

Promoting Effect of Tin on Binder‐Free CoSn_x‐B/Ni‐foam Catalysts for Fuel Conversion Efficiency in Direct Borohydride Fuel Cell

Synthesis and Properties of Sn₃₀Co₃₀C₄₀Ternary Alloy Anode Material for Lithium Ion Battery

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Nanocrystalline CoSn2-carbon composite electrode prepared by using sonochemistry

Cited by 26 publications

References 21 publications

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

Ultrasound-Assisted Preparation Methods of Nanoparticles for Energy-Related Applications

Promoting Effect of Tin on Binder‐Free CoSnx‐B/Ni‐foam Catalysts for Fuel Conversion Efficiency in Direct Borohydride Fuel Cell

Synthesis and Properties of Sn30Co30C40Ternary Alloy Anode Material for Lithium Ion Battery

Contact Info

Product

Resources

About

Promoting Effect of Tin on Binder‐Free CoSn_x‐B/Ni‐foam Catalysts for Fuel Conversion Efficiency in Direct Borohydride Fuel Cell

Synthesis and Properties of Sn₃₀Co₃₀C₄₀Ternary Alloy Anode Material for Lithium Ion Battery