Boron carbide as an electrode material: tailoring particle morphology to control capacitive behaviour

Avcıoğlu, Suna and Aktürk, Merve and Erdem, Emre and Kaya, Figen and Kaya, Cengiz (2023) Boron carbide as an electrode material: tailoring particle morphology to control capacitive behaviour. Materials, 16 (2). ISSN 1996-1944

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In this study, boron carbide powders consisting mainly of nano/micro fibers or polyhedral-equiaxed particles were synthesized via the sol–gel technique, and the influence of particle morphology on electrochemical performance of boron carbide electrodes was investigated. Thermal decomposition duration of the precursors played a determinant role in the final morphology of the synthesized boron carbide powders. The morphology of boron carbide powders successfully tuned from polyhedral-equiaxed (with ~3 µm average particle size) to nano/micro fibers by adjusting the thermal decomposition duration of precursors. The length and thickness of fibers were in the range of 30 to 200 µm and sub-micron to 5 µm, respectively. The electrochemical performance analysis of boron carbide powders has shown that the particle morphology has a considerable impact on the boron carbide electrodes electrochemical performance. It was found that the synergetic effects of polyhedral-equiaxed and nano/micro fiber morphologies exhibited the best electrochemical performance in supercapacitor devices, resulting in the power and energy density of 34.9 W/kg and 0.016 Wh/kg, respectively.
Item Type: Article
Uncontrolled Keywords: boron carbide (B4C); electrode; energy storage; morphology; supercapacitor
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Faculty of Engineering and Natural Sciences
Integrated Manufacturing Technologies Research and Application Center
Depositing User: Emre Erdem
Date Deposited: 17 Apr 2023 12:05
Last Modified: 17 Apr 2023 12:05

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