High performance ternary polyaniline-acetylene black-cobalt ferrite hybrid system for supercapacitor electrodes

An acetylene black modified gel polymer electrolyte was prepared to simultaneously solve the problems of shuttle effect and lithium dendrite growth for high-performance Li–S batteries.

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Synthesis and Characterisation of Cobalt Ferrite Coatings for Oxygen Evolution Reaction

Catalysts ◽

10.3390/catal12010021 ◽

2021 ◽

Vol 12 (1) ◽

pp. 21

Author(s):

Julian Kubisztal ◽

Marian Kubisztal

Keyword(s):

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

High Performance ◽

Cobalt Ferrite ◽

Electrode Materials ◽

Organic Binder ◽

Active Area ◽

Significant Activity ◽

Galvanostatic Deposition ◽

Electrochemically Active

In this paper, two novel procedures based on powder sedimentation, thermal treatment, and galvanostatic deposition were proposed for the preparation of porous cobalt ferrite (CoFe2O4) coatings with a metallic and organic binder for use as catalysts in the oxygen evolution reaction (OER). The electrochemical properties of the obtained electrode materials were determined as well, using both dc and ac methods. It was found that cobalt ferrite coatings show excellent electrocatalytic properties towards the oxygen evolution reaction (OER) with overpotential measured at a current density of 10 mAcm−2 from 287 to 295 mV and a Tafel slope of 35–45 mVdec−1. It was shown that the increase in the apparent activity of the CoFe2O4 coatings with an organic binder results mainly from a large electrochemically active area. Incorporation of the nickel binder between the CoFe2O4 particles causes an increase in both the conductivity and the electrochemically active area. The Tafel slopes indicate that the same rate-determining step controls the OER for all obtained coatings. Furthermore, it was shown that the CoFe2O4 electrodes exhibit no significant activity decrease after 28 h of oxygen evolution. The proposed coating preparation procedures open a new path to develop high-performance OER electrocatalysts.

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Strategies to Enhance the Part-Load Performance of a SOFC/GT Hybrid System

Volume 3: Turbo Expo 2007 ◽

10.1115/gt2007-27441 ◽

2007 ◽

Cited By ~ 2

Author(s):

Jin Sik Yang ◽

Jeong L. Sohn ◽

Sung Tack Ro

Keyword(s):

Gas Turbine ◽

Hybrid Systems ◽

Hybrid System ◽

High Performance ◽

Operating Conditions ◽

Solid Oxide ◽

Part Load ◽

Performance Loss ◽

High Level ◽

Level Performance

In spite of the high performance characteristics of the solid oxide fuel cell / gas turbine (SOFC/GT) hybrid system, it is very difficult to maintain the high level performance under real application conditions, which generally require part-load operations. The performance loss of SOFC/GT hybrid systems under part-load operating conditions is closely related to that of the gas turbine. The power generated by the gas turbine in a hybrid system is much smaller than that generated by the SOFC. However, its contribution to the system efficiency is very important especially at part-load operating conditions. Therefore, to enhance the part-load performance of hybrid systems, it is useful to reduce the relative amount of power generated by a gas turbine that delivers lower performance than a SOFC. In the present study, several part-load operation strategies related to the gas turbine are studied and their impacts on the performance of a SOFC/GT hybrid system are discussed.

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Nanohybrids of multi-walled carbon nanotubes and cobalt ferrite nanoparticles: High performance anode material for lithium-ion batteries

Carbon ◽

10.1016/j.carbon.2020.08.080 ◽

2021 ◽

Vol 171 ◽

pp. 179-187

Author(s):

Mubasher ◽

M. Mumtaz ◽

Mehwish Hassan ◽

Shafiq Ullah ◽

Zubair Ahmad

Keyword(s):

Carbon Nanotubes ◽

Lithium Ion Batteries ◽

Anode Material ◽

High Performance ◽

Cobalt Ferrite ◽

Lithium Ion ◽

Ferrite Nanoparticles ◽

Cobalt Ferrite Nanoparticles ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Graphene oxide-wrapped sulfur/acetylene black for high-performance lithium-sulfur batteries

Ionics ◽

10.1007/s11581-020-03645-y ◽

2020 ◽

Vol 26 (10) ◽

pp. 4929-4935

Author(s):

Youlan Zou ◽

Bo Long ◽

Zhaoyang Li ◽

Xiaoyu Li ◽

Zhehao Zhang

Keyword(s):

Graphene Oxide ◽

High Performance ◽

Acetylene Black ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

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Encapsulating of Sulfur and Acetylene Black with Manganese Dioxide Nanosheets for High-Performance Lithium–Sulfur Batteries

ECS Meeting Abstracts ◽

10.1149/ma2017-01/5/525 ◽

2017 ◽

Keyword(s):

Manganese Dioxide ◽

High Performance ◽

Acetylene Black ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

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Climate-adaptive buildings: Systems and materials

International Journal of Architectural Computing ◽

10.1177/1478077119852707 ◽

2019 ◽

Vol 17 (2) ◽

pp. 166-184 ◽

Cited By ~ 2

Author(s):

Andrzej Zarzycki ◽

Martina Decker

Keyword(s):

Case Studies ◽

Hybrid System ◽

High Performance ◽

Smart Material ◽

Physical Computing ◽

High Performance Buildings

This article discusses research case studies that deploy physical computing with kinetic, pneumatic, and smart material technologies as vehicles to address the prospects of these technologies and their future impact on resilient and high-performance buildings. It looks into conceptual aspects of an integrated hybrid system that combines both computation approaches and unique opportunities inherent to these hybrid designs.

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