Dragomir Tatchev

Prof. Dr. Dragomir Tatchev

orcid

Research Focus & Metrics

Academic Career Length

22Years (2005-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 March 2019 in Meteoritics & Planetary Science
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Journal Article
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OUOzan Unsalan
Ozan Unsalan
PJPeter Jenniskens
Peter Jenniskens
QYQing‐Zhu Yin
Qing‐Zhu Yin
EKErsin Kaygısız
Ersin Kaygısız
JAJim Albers
Jim Albers
(C(The Sariçiçek Meteorite Consortium)
(The Sariçiçek Meteorite Consortium)

12 October 2018 in Journal of Materials Chemistry A
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Journal Article
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GGGiorgia Greco
Giorgia Greco
DTDragomir Tatchev
Dragomir Tatchev
AHArmin Hoell
Armin Hoell
MKMichael Krumrey
Michael Krumrey
SRSimone Raoux
Simone Raoux
Giuseppe Antonio EliaGiuseppe Antonio Elia
Giuseppe Antonio Elia
Herein we report on a detailed investigation of the irreversible capacity in the first cycle of pyrolytic graphite electrodes in aluminum batteries employing 1-ethyl-3-methylimidazolium chloride:aluminum trichloride (EMIMCl:AlCl3) as electrolyte. The reaction mechanism, involving the intercalation of AlCl4 − in graphite, has been fully characterized by correlating the micro/nanostructural modification to the electrochemical performance. To achieve this aim a combination of X-ray diffraction (XRD), small angle X-ray scattering (SAXS) and computed tomography (CT) has been used. The reported results evidence that the irreversibility is caused by a very large decrease in the porosity, which consequently leads to microstructural changes resulting in the trapping of ions in the graphite. A powerful characterization methodology is established, which can also be applied more generally to carbon-based energy-related materials.

23 February 2011 in Physical Review Letters
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Journal Article
Closed access
DTDragomir Tatchev
Dragomir Tatchev
AHA. Hoell
A. Hoell
MEM. Eichelbaum
M. Eichelbaum
KRK. Rademann
K. Rademann
The in~situ formation of gold nanoparticles in soda lime silicate glass under constant x-ray irradiation is compared with the ex~situ formation in preirradiated glasses. The ASAXS measurements confirm that pure Au particles are formed. The comparison shows that the number of particles nucleated under irradiation is about an order of magnitude higher than of those nucleated with preirradiation. The radius, R, remains slightly below 1~nm under in~situ conditions and the Ostwald ripening stage is slowed down. Under ex~situ conditions Ostwald ripening is clearly observed and R grows up to 3~nm.

1 November 2011 in Journal of Materials Science
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RHRuzha Harizanova
Ruzha Harizanova
IGIvailo Gugov
Ivailo Gugov
CRChristian Rüssel
Christian Rüssel
DTDragomir Tatchev
Dragomir Tatchev
VRVikram Singh Raghuwanshi
Vikram Singh Raghuwanshi
AHArmin Hoell
Armin Hoell

1 December 2005 in Physica B: Condensed Matter
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Journal Article
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DTDragomir Tatchev
Dragomir Tatchev
AHArmin Hoell
Armin Hoell
RKRainer Kranold
Rainer Kranold
SAStephan Armyanov
Stephan Armyanov

15 September 2005 in Journal of Applied Crystallography
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DTDragomir Tatchev
Dragomir Tatchev
GGGuenter Goerigk
Guenter Goerigk
EVE. Valova
E. Valova
JDJ. Dille
J. Dille
RKR. Kranold
R. Kranold
JDJ.-L. Delplancke
J.-L. Delplancke