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Single-source-precursor synthesis and high-temperature evolution of a boron-containing SiC/HfC ceramic nano/micro composite. Ann Ital Chir 2021. [DOI: 10.1016/j.jeurceramsoc.2020.05.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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2
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In-Situ Synthesis and Characterization of Nanocomposites in the Si-Ti-N and Si-Ti-C Systems. Molecules 2020; 25:molecules25225236. [PMID: 33182722 PMCID: PMC7696609 DOI: 10.3390/molecules25225236] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 12/02/2022] Open
Abstract
The pyrolysis (1000 °C) of a liquid poly(vinylmethyl-co-methyl)silazane modified by tetrakis(dimethylamido)titanium in flowing ammonia, nitrogen and argon followed by the annealing (1000–1800 °C) of as-pyrolyzed ceramic powders have been investigated in detail. We first provide a comprehensive mechanistic study of the polymer-to-ceramic conversion based on TG experiments coupled with in-situ mass spectrometry and ex-situ solid-state NMR and FTIR spectroscopies of both the chemically modified polymer and the pyrolysis intermediates. The pyrolysis leads to X-ray amorphous materials with chemical bonding and ceramic yields controlled by the nature of the atmosphere. Then, the structural evolution of the amorphous network of ammonia-, nitrogen- and argon-treated ceramics has been studied above 1000 °C under nitrogen and argon by X-ray diffraction and electron microscopy. HRTEM images coupled with XRD confirm the formation of nanocomposites after annealing at 1400 °C. Their unique nanostructural feature appears to be the result of both the molecular origin of the materials and the nature of the atmosphere used during pyrolysis. Samples are composed of an amorphous Si-based ceramic matrix in which TiNxCy nanocrystals (x + y = 1) are homogeneously formed “in situ” in the matrix during the process and evolve toward fully crystallized compounds as TiN/Si3N4, TiNxCy (x + y = 1)/SiC and TiC/SiC nanocomposites after annealing to 1800 °C as a function of the atmosphere.
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Schmidt M, Durif C, Acosta ED, Salameh C, Plaisantin H, Miele P, Backov R, Machado R, Gervais C, Alauzun JG, Chollon G, Bernard S. Molecular-Level Processing of Si-(B)-C Materials with Tailored Nano/Microstructures. Chemistry 2017; 23:17103-17117. [PMID: 28949424 DOI: 10.1002/chem.201703674] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Indexed: 01/15/2023]
Abstract
The design of Si-(B)-C materials is investigated, with detailed insight into the precursor chemistry and processing, the precursor-to-ceramic transformation, and the ceramic microstructural evolution at high temperatures. In the early stage of the process, the reaction between allylhydridopolycarbosilane (AHPCS) and borane dimethyl sulfide is achieved. This is investigated in detail through solid-state NMR and FTIR spectroscopy and elemental analyses for Si/B ratios ranging from 200 to 30. Boron-based bridges linking AHPCS monomeric fragments act as crosslinking units, extending the processability range of AHPCS and suppressing the distillation of oligomeric fragments during the low-temperature pyrolysis regime. Polymers with low boron contents display appropriate requirements for facile processing in solution, leading to the design of monoliths with hierarchical porosity, significant pore volume, and high specific surface area after pyrolysis. Polymers with high boron contents are more appropriate for the preparation of dense ceramics through direct solid shaping and pyrolysis. We provide a comprehensive study of the thermal decomposition mechanisms, and a subsequent detailed study of the high-temperature behavior of the ceramics produced at 1000 °C. The nanostructure and microstructure of the final SiC-based ceramics are intimately linked to the boron content of the polymers. B4 C/C/SiC nanocomposites can be obtained from the polymer with the highest boron content.
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Affiliation(s)
- Marion Schmidt
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Universite Montpellier, Place E. Bataillon, 34095, Montpellier, France.,Laboratoire des Composites ThermoStructuraux, UMR 5801, CNRS- SAFRAN Ceramics - CEA -, University of Bordeaux, 3, Allée de La Boétie, 33600, Pessac, France
| | - Charlotte Durif
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Universite Montpellier, Place E. Bataillon, 34095, Montpellier, France
| | - Emanoelle Diz Acosta
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Universite Montpellier, Place E. Bataillon, 34095, Montpellier, France.,Materials Engineering, Federal University of Santa Catarina, 88010-970, Florianópolis, Brazil
| | - Chrystelle Salameh
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, 75005, Paris, France
| | - Hervé Plaisantin
- Laboratoire des Composites ThermoStructuraux, UMR 5801, CNRS- SAFRAN Ceramics - CEA -, University of Bordeaux, 3, Allée de La Boétie, 33600, Pessac, France
| | - Philippe Miele
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Universite Montpellier, Place E. Bataillon, 34095, Montpellier, France
| | - Rénal Backov
- Centre de Recherche Paul Pascal, Université de Bordeaux, UPR 8641 CNRS-115-, Avenue Albert Schweitzer, 33600, Pessac, France
| | - Ricardo Machado
- Materials Engineering, Federal University of Santa Catarina, 88010-970, Florianópolis, Brazil
| | - Christel Gervais
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, 75005, Paris, France
| | - Johan G Alauzun
- Institut Charles Gerhardt Montpellier, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier, Place Eugène Bataillon, CC1701, 34095, Montpellier, France
| | - Georges Chollon
- Laboratoire des Composites ThermoStructuraux, UMR 5801, CNRS- SAFRAN Ceramics - CEA -, University of Bordeaux, 3, Allée de La Boétie, 33600, Pessac, France
| | - Samuel Bernard
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM), Universite Montpellier, Place E. Bataillon, 34095, Montpellier, France.,Science des Procédés Céramiques et de Traitements de Surface (SPCTS), UMR CNRS 7315, Centre Européen de la Céramique, 12 rue Atlantis, 87068, Limoges Cedex, France
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Genc R, Alas MO, Harputlu E, Repp S, Kremer N, Castellano M, Colak SG, Ocakoglu K, Erdem E. High-Capacitance Hybrid Supercapacitor Based on Multi-Colored Fluorescent Carbon-Dots. Sci Rep 2017; 7:11222. [PMID: 28894243 PMCID: PMC5593850 DOI: 10.1038/s41598-017-11347-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/23/2017] [Indexed: 12/23/2022] Open
Abstract
Multi-colored, water soluble fluorescent carbon nanodots (C-Dots) with quantum yield changing from 4.6 to 18.3% were synthesized in multi-gram using dated cola beverage through a simple thermal synthesis method and implemented as conductive and ion donating supercapacitor component. Various properties of C-Dots, including size, crystal structure, morphology and surface properties along with their Raman and electron paramagnetic resonance spectra were analyzed and compared by means of their fluorescence and electronic properties. α-Manganese Oxide-Polypyrrole (PPy) nanorods decorated with C-Dots were further conducted as anode materials in a supercapacitor. Reduced graphene oxide was used as cathode along with the dicationic bis-imidazolium based ionic liquid in order to enhance the charge transfer and wetting capacity of electrode surfaces. For this purpose, we used octyl-bis(3-methylimidazolium)diiodide (C8H16BImI) synthesized by N-alkylation reaction as liquid ionic membrane electrolyte. Paramagnetic resonance and impedance spectroscopy have been undertaken in order to understand the origin of the performance of hybrid capacitor in more depth. In particular, we obtained high capacitance value (C = 17.3 μF/cm2) which is exceptionally related not only the quality of synthesis but also the choice of electrode and electrolyte materials. Moreover, each component used in the construction of the hybrid supercapacitor is also played a key role to achieve high capacitance value.
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Affiliation(s)
- Rukan Genc
- Department of Chemical Engineering, Engineering Faculty of Mersin University, Mersin University, TR-33343, Mersin, Turkey.
- Advanced Technology, Research, and Application Center, Mersin University, TR-33343, Mersin, Turkey.
| | - Melis Ozge Alas
- Department of Chemical Engineering, Engineering Faculty of Mersin University, Mersin University, TR-33343, Mersin, Turkey
| | - Ersan Harputlu
- Advanced Technology, Research, and Application Center, Mersin University, TR-33343, Mersin, Turkey
| | - Sergej Repp
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Nora Kremer
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Mike Castellano
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany
| | - Suleyman Gokhan Colak
- Advanced Technology, Research, and Application Center, Mersin University, TR-33343, Mersin, Turkey
| | - Kasim Ocakoglu
- Advanced Technology, Research, and Application Center, Mersin University, TR-33343, Mersin, Turkey.
- Department of Energy Systems Engineering, Faculty of Technology, Mersin University, TR-33480, Tarsus, Mersin, Turkey.
| | - Emre Erdem
- Institut für Physikalische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany.
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Viard A, Fonblanc D, Schmidt M, Lale A, Salameh C, Soleilhavoup A, Wynn M, Champagne P, Cerneaux S, Babonneau F, Chollon G, Rossignol F, Gervais C, Bernard S. Molecular Chemistry and Engineering of Boron-Modified Polyorganosilazanes as New Processable and Functional SiBCN Precursors. Chemistry 2017; 23:9076-9090. [DOI: 10.1002/chem.201700623] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Antoine Viard
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Diane Fonblanc
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
- Science des Procédés Céramiques et de Traitements de Surface (SPCTS); UMR CNRS 7315; Centre Européen de la Céramique; 12 rue Atlantis 87068 Limoges Cedex France
| | - Marion Schmidt
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
- University of Bordeaux, Laboratoire des Composites ThermoStructuraux (LCTS), UMR 5801; CNRS-Herakles (Safran)-CEA-UBx 3; Allée de La Boétie 33600 Pessac France
| | - Abhijeet Lale
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Chrystelle Salameh
- Sorbonne Universités; UPMC Univ Paris 06, CNRS; Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris; 75005 Paris France
| | - Anne Soleilhavoup
- Sorbonne Universités; UPMC Univ Paris 06, CNRS; Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris; 75005 Paris France
| | - Mélanie Wynn
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
- Laboratoire de Matériaux Céramiques et Procédés Associés LMCPA; UPRES EA 2443, UVHC-ISTV; 59600 Maubeuge France
| | - Philippe Champagne
- Laboratoire de Matériaux Céramiques et Procédés Associés LMCPA; UPRES EA 2443, UVHC-ISTV; 59600 Maubeuge France
| | - Sophie Cerneaux
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Florence Babonneau
- Sorbonne Universités; UPMC Univ Paris 06, CNRS; Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris; 75005 Paris France
| | - Georges Chollon
- University of Bordeaux, Laboratoire des Composites ThermoStructuraux (LCTS), UMR 5801; CNRS-Herakles (Safran)-CEA-UBx 3; Allée de La Boétie 33600 Pessac France
| | - Fabrice Rossignol
- Science des Procédés Céramiques et de Traitements de Surface (SPCTS); UMR CNRS 7315; Centre Européen de la Céramique; 12 rue Atlantis 87068 Limoges Cedex France
| | - Christel Gervais
- Sorbonne Universités; UPMC Univ Paris 06, CNRS; Collège de France, UMR 7574; Chimie de la Matière Condensée de Paris; 75005 Paris France
| | - Samuel Bernard
- IEM (Institut Europeen des Membranes); UMR 5635 (CNRS-ENSCM-UM); Universite Montpellier; Place E. Bataillon 34095 Montpellier France
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6
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Bechelany MC, Proust V, Lale A, Miele P, Malo S, Gervais C, Bernard S. Nanocomposites through the Chemistry of Single-Source Precursors: Understanding the Role of Chemistry behind the Design of Monolith-Type Nanostructured Titanium Nitride/Silicon Nitride. Chemistry 2016; 23:832-845. [PMID: 27741364 DOI: 10.1002/chem.201603661] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Mirna Chaker Bechelany
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM); Université Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Vanessa Proust
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM); Université Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Abhijeet Lale
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM); Université Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Philippe Miele
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM); Université Montpellier; Place E. Bataillon 34095 Montpellier France
| | - Sylvie Malo
- Laboratoire CRISMAT; UMR 6508 CNRS/ENSICAEN/UCBN; 6 boulevard du Maréchal Juin 14050 Caen France
| | - Christel Gervais
- Sorbonne Universités; UPMC Univ Paris 06, CNRS; Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris; 75005 Paris France
| | - Samuel Bernard
- IEM (Institut Europeen des Membranes), UMR 5635 (CNRS-ENSCM-UM); Université Montpellier; Place E. Bataillon 34095 Montpellier France
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7
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Hector AL. Synthesis and processing of silicon nitride and related materials using preceramic polymer and non-oxide sol-gel approaches. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.05.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Zhang Q, Yang Z, Jia D, Chen Q, Zhou Y. Synthesis and structural evolution of dual-boron-source-modified polysilazane derived SiBCN ceramics. NEW J CHEM 2016. [DOI: 10.1039/c5nj03723a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual-boron-source approach is proposed to enrich the boron content of SiBCN ceramics through aminolysis and hydroboration reactions.
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Affiliation(s)
- Qian Zhang
- Institute for Advanced Ceramics
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Zhihua Yang
- Institute for Advanced Ceramics
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Dechang Jia
- Institute for Advanced Ceramics
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Qingqing Chen
- Institute for Advanced Ceramics
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
| | - Yu Zhou
- Institute for Advanced Ceramics
- School of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin 150001
- P. R. China
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Hoffendahl C, Fontaine G, Duquesne S, Taschner F, Mezger M, Bourbigot S. The combination of aluminum trihydroxide (ATH) and melamine borate (MB) as fire retardant additives for elastomeric ethylene vinyl acetate (EVA). Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Bernard S, Miele P. Ordered mesoporous polymer-derived ceramics and their processing into hierarchically porous boron nitride and silicoboron carbonitride monoliths. NEW J CHEM 2014. [DOI: 10.1039/c3nj01612a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes the elaboration of ordered mesoporous non-oxide materials such as BN and SiBCN and the subsequent fabrication of derived monoliths by spark plasma sintering using the as-prepared powders.
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Affiliation(s)
- Samuel Bernard
- IEM (Institut Europeen des Membranes)
- UMR 5635 (CNRS-ENSCM-UM2)
- Universite Montpellier 2
- Montpellier, France
| | - Philippe Miele
- IEM (Institut Europeen des Membranes)
- UMR 5635 (CNRS-ENSCM-UM2)
- Universite Montpellier 2
- Montpellier, France
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11
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Freitas J, Cunha A, Emmerich F. Solid-State Nuclear Magnetic Resonance (NMR) Methods Applied to the Study of Carbon Materials. ACTA ACUST UNITED AC 2012. [DOI: 10.1201/b12960-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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12
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Gottardo L, Bernard S, Gervais C, Inzenhofer K, Motz G, Weinmann M, Balan C, Miele P. Chemistry, structure and processability of boron-modified polysilazanes as tailored precursors of ceramic fibers. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15919h] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Gottardo L, Bernard S, Gervais C, Weinmann M, Miele P. Study of the intermediate pyrolysis steps and mechanism identification of polymer-derived SiBCN ceramics. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32737f] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Erdem E, Mass V, Gembus A, Schulz A, Liebau-Kunzmann V, Fasel C, Riedel R, Eichel RA. Defect structure in lithium-doped polymer-derived SiCN ceramics characterized by Raman and electron paramagnetic resonance spectroscopy. Phys Chem Chem Phys 2009; 11:5628-33. [PMID: 19842480 DOI: 10.1039/b822457a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lithium-doped polymer-derived silicon carbonitride ceramics (SiCN:Li) synthesized at various pyrolysis temperatures, have been investigated by means of multifrequency and multipulse electron paramagnetic resonance (EPR) and Raman spectroscopy in order to determine different defect states that may impact the materials electronic properties. In particular, carbon- and silicon-based 'dangling bonds' at elevated, as well as metallic networks containing Li0 in the order of 1 microm at low pyrolysis temperatures have been observed in concentrations ranging between 10(14) and 10(17) spins mg(-1).
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Affiliation(s)
- Emre Erdem
- Institut für Physikalische Chemie I, Universität Freiburg, D-79104, Freiburg, Germany
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Affiliation(s)
- Cecil Dybowski
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716-2522, USA
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