Ceramic Matrix Materials

Morrell, R.

doi:10.1016/b978-0-12-803581-8.03893-5

Cited by 1 publication

(1 citation statement)

References 92 publications

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“…B 4 C is a highly demanding refractory material used as controlling rods, shielding material, and neutron detector in nuclear reactors due to its excellent neutron absorbing ability 2,3 . As the major feature of B 4 C is its hardness, it found also applications in making body and vehicle armor 4 , cutting tools of different alloys 5 , and blasting nozzles speci cally in the sintered form 6 . B 4 C has shown great potential to be used as a primary material in the electronic industry since it is a p-type semiconductor 7 .…”

Section: Introductionmentioning

confidence: 99%

Defect-induced B4C Electrodes for High Energy Density Supercapacitor Devices

Balcı

Ammar

Buldu

et al. 2021

Preprint

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Boron carbide powders were synthesized by mechanically activated annealing process using anhydrous boron oxide (B2O3) and varying carbon (C) sources such as graphite and activated carbon: The precursors were mechanically activated for different times in a high energy ball mill and reacted in an induction furnace. According to the Raman analyses of the carbon sources, the I(D)/I(G) ratio increased from ~0.25 to ~0.99, as the carbon material changed from graphite to active carbon, indicating the highly defected and disordered structure of active carbon. Complementary advanced EPR analysis of defect centers in B4C revealed that the intrinsic defects play a major role in the electrochemical performance of the supercapacitor device once they have an electrode component made of bare B4C. Depending on the starting material and synthesis conditions the conductivity, energy, and power density, as well as capacity, can be controlled hence high-performance supercapacitor devices can be produced.

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