Amin‐Borane als Precursoren für Borcarbidnitrid

Riedel, Ralf; Passing, G.

doi:10.1002/zaac.19926100114

Cited by 52 publications

(17 citation statements)

References 9 publications

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“…The structurally undefined film of composition Bo 3sCo 35 deposited on insulating BN by reaction 4 was found''' to have a room temperature conductivity of cs = 6 x SIcm. The logarithm of the conductivity showed a linear relationship against the inverse of the absolute temperature, leading to a thermal bandgap of 0.2 eV.…”

Section: Electrical Properties Of B/c/n Hybrids and Bcn Compoundsmentioning

confidence: 99%

B/C/N Materials Based on the Graphite Network

1997

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New semiconductors and host materials are expected to be found among newly synthesized boron/carbon/nitrogen (B/C/N) materials based on the graphite network. The synthesis, structure, and properties of such materials, including solid solutions, more‐ordered B/C/N hybrids, and compounds (e.g., BC3, C5N, BC2N, BC3N, BC4N, BC6N2H3), are reviewed. Particular attention is paid to their electrical properties, luminescenc characteristics, and intercalation chemistry, together with the application of B/C/N materials as a battery electrode matrix.

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Section: Electrical Properties Of B/c/n Hybrids and Bcn Compoundsmentioning

confidence: 99%

B/C/N Materials Based on the Graphite Network

1997

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“…The broad reflections observed in the diffraction patterns (marked with *) are due to the turbostratic nature of the BCN [46,47]. The results of XPS measurements of the BC2N and BC4N have been reported in a previous study [48].…”

Section: Resultsmentioning

confidence: 53%

“…The amount of carbon in the final ceramics equals 45 wt % for BC 2 N and 65 wt % for BC 4 N. Figure 1, indicating the amorphous nature of both BC 2 N and BC 4 N compositions. The broad reflections observed in the diffraction patterns (marked with *) are due to the turbostratic nature of the BCN [46,47].…”

Section: Resultsmentioning

confidence: 99%

“…Amorphous BC 2 N and BC 4 N were synthesized in an argon atmosphere via thermal conversion of piperazine-borane and pyridine-borane, respectively, up to 1050˝C and 2 h hold time (100˝C/h heating rate) [46,56,57]. The reaction proceeded via the formation of a highly cross-linked and hence insoluble and infusible polymeric intermediate; hence, these are also called polymer-derived ceramics.…”

Section: Methodsmentioning

confidence: 99%

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Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics

Bhat

Sasikumar

Molina‐Luna

et al. 2016

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Amorphous BCN ceramics were synthesized via a thermal conversion procedure of piperazine-borane and pyridine-borane. The synthesized BC 2 N and BC 4 N ceramics contained, in their final amorphous structure, 45 and 65 wt % of carbon, respectively. Elemental analysis revealed 45 and 65 wt % of carbon for BC 2 N and BC 4 N, respectively. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed the amorphous nature of studied compounds. Lateral cluster size of carbon crystallites of 7.43 and 10.3 nm for BC 2 N and BC 4 N, respectively, was calculated from Raman spectroscopy data. This signified a higher order of the carbon phase present in BC 4 N. The electrochemical investigation of the low carbon BC 2 N composition as anodes for Li-ion batteries revealed initial capacities of 667 and 235 mAh¨g´1 for lithium insertion/extraction, respectively. The material with higher carbon content, BC 4 N, disclosed better reversible lithium storage properties. Initial capacities of 1030 and 737 mAh¨g´1 for lithium insertion and extraction were recovered for carbon-rich BC 4 N composition. Extended cycling with high currents up to 2 C/2 D revealed the cycling stability of BC 4 N electrodes. Cycling for more than 75 cycles at constant current rates showed a stable electrochemical behavior of BC 4 N anodes with capacities as high as 500 mAh¨g´1.

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“…XRD investigations reveal that the amorphous state of Si-B-C-N materials can be maintained up to temperatures of 1800-1900 0C, [65,691 indicating a retarding effect of boron on the atomic mobility of these materials. TEM-investigations reveal that at these temperatures the amorphous state transforms into the nanocrystalline state containing crystallite sizes of SIC and Si,N, below 50 nm.…”

Section: Advanced Materialsmentioning

confidence: 98%

Precursor‐derived Covalent Ceramics*

1995

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The preparation of ceramic materials from preceramic compounds provides a means for the synthesis of new materials which cannot be obtained by conventional methods. An example is shown in the figure, which shows carbon‐fiber‐reinforced silicon carbide coated with silicon carbonitride prepared by dip‐coating the substrate with a slurry made of polyhydridomethylsilazane and silicon powder. Progress and applicational examples are reviewed magnified image.

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Amin‐Borane als Precursoren für Borcarbidnitrid

Cited by 52 publications

References 9 publications

B/C/N Materials Based on the Graphite Network

B/C/N Materials Based on the Graphite Network

Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics

Precursor‐derived Covalent Ceramics*

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