Rainer Niewa
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Filling Voids: Cubic Carbodiimide Nitride Nitridometalates (Ba <sub>6</sub> N <i> <sub>x</sub> </i> ) <sub>2</sub> [ <i>M</i> N <sub>4</sub> ][CN <sub>2</sub> ] <sub>6</sub> of <i>M</i> = Zr, Hf, Nb, Ta, Mo, and W Open
Cubic carbodiimide nitride nitridometalates (Ba 6 N x ) 2 [ M N 4 ][CN 2 ] 6 of M = Zr, Hf, Nb, Ta, Mo, and W are synthesized by various high‐temperature reactions and their respective crystal structures were investigated using X‐ray diffr…
Understanding the Temperature–Induced Decomposition of Commercial Nickel–Cobalt–Aluminum Oxide (LiNi <sub>0.8</sub> Co <sub>0.15</sub> Al <sub>0.05</sub> O <sub>2</sub> ) Electrodes Open
This study addresses the thermal degradation and structural stability of the NCA (nickel – cobalt – aluminum oxide) cathode materials under varying states of charge (SOC)/delithiation and temperature. Using simultaneous thermogravimetric a…
Nitridogermanates(IV): The Germanide Oxide Sr<sub>15</sub>Ge[GeN<sub>4</sub>]<sub>3</sub>O, the Carbodiimide Ba<sub>5</sub>[GeN<sub>4</sub>][CN<sub>2</sub>], and the Oxidonitridogermanate Sr<sub>6</sub>[Ge<sub>2</sub>N<sub>6</sub>O] Open
Various novel compounds have been encountered by serendipity, due to small oxygen or carbon impurities, during the explorative studies to explore the crystal chemistry of multinary germanium nitrides and nitridogermanates. With oxygen in a…
Synthesis and Characterization of Novel V‐Type Hexaferrite BaFe<sub>9−<i>x</i></sub>Sn<sub><i>x</i></sub>O<sub>15</sub> Open
A novel V‐type hexaferrite with the composition BaFe 9− x Sn x O 15 with 1.57 ≤ x ≤ 1.84 (from wavelength dispersive X‐ray spectroscopy [WDX] data) is synthesized by reacting BaCO 3 , Fe 2 O 3 , SnO 2 , and Na 2 CO 3 as flux in a platinum …
Reactions of Binary Nitrides in Liquid Hydrogen Fluoride and the First Calcium Oxidofluoridometallate of a Group Six Element Ca[Mo<sub>2</sub>O<sub>2</sub>F<sub>9</sub>]<sub>2</sub> ⋅ HF Open
The reactions of the nitrides Mg 3 N 2 , Ca 3 N 2 , BN, Si 3 N 4 and Mo 2 N with anhydrous liquid HF (aHF) were investigated at 20 and 80 °C. While BN, Si 3 N 4 , and Mo 2 N did not react under these conditions, Mg 3 N 2 and Ca 3 N 2 were …
La<sub>11</sub>Si<sub>11</sub>P<sub>21</sub>Te<sub>5</sub> and La<sub>20.667</sub>Si<sub>18</sub>P<sub>46</sub>Te<sub>11.333</sub>: Two Novel 3D‐Polyanionic Lanthanum Compounds Following the Zintl‐Klemm Concept Open
During attempts to synthesize La 3 PTe 3 , after participation of the SiO 2 ‐container material, two so far unknown compounds could be isolated, which both follow the Zintl‐Klemm concept. The novel quaternary lanthanum tellurides La 11 Si …
Chronoamperometric investigations on electrochemical synthesis of iron nitrides in molten salt system Open
A systematic investigation of the electrochemical iron nitride synthesis in a LiCl/KCl salt melt at 723 K shows an optimum of $$\epsilon$$ -Fe $$_3$$ N $$_{1+x}$$ formation in the range of 2.2 to 2.3 V and for $$\gamma '$$ -Fe $$_4$$ N bet…
<i>Polynator</i>: a tool to identify and quantitatively evaluate polyhedra and other shapes in crystal structures Open
Polynator is a Python program capable of identifying coordination polyhedra, molecules and other shapes in crystal structures and evaluating their distortions. Distortions are quantified by fitting the vertices of a model to a selected set…
Crystal Structure and XPS Study of Titanium-Substituted M-Type Hexaferrite BaFe12−xTixO19 Open
The M-type barium hexaferrite substituted with titanium, BaFe12−xTixO19, was synthesized from sodium carbonate flux and the obtained single crystals with a maximum degree of substitution of up to about x = 0.9 were characterized. XPS measu…
CSD 2192042: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2190983: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2192040: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2192041: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2177527: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2177525: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2177526: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Aging‐Driven Composition and Distribution Changes of Electrolyte and Graphite Anode in 18650‐Type Li‐Ion Batteries (Adv. Energy Mater. 45/2022)
Aging‐Driven Composition and Distribution Changes of Electrolyte and Graphite Anode in 18650‐Type Li‐Ion Batteries (Adv. Energy Mater. 45/2022) Open
Lithium-Ion Batteries In article number 2201652, Anatoliy Senyshyn and co-workers investigate the degradation mechanisms of real life 18650-type lithium-ion batteries using a combination of neutron diffraction, calorimetry, infrared measur…
View article: Aging‐Driven Composition and Distribution Changes of Electrolyte and Graphite Anode in 18650‐Type Li‐Ion Batteries
Aging‐Driven Composition and Distribution Changes of Electrolyte and Graphite Anode in 18650‐Type Li‐Ion Batteries Open
A series of low‐temperature studies on LiNi 0.80 Co 0.15 Al 0.05 O 2 18650‐type batteries of high‐energy type with different stabilized states of fatigue is carried out using spatially resolved neutron powder diffraction, infrared/thermal …
CSD 2096744: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2096743: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2096785: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2096786: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2096787: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
CSD 2096784: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
Li<sub>16</sub>Sr<sub>6</sub>Ge<sub>6</sub>N, Li<sub>16</sub>Sr<sub>6</sub>Ge<sub>6.5</sub> and related lithium alkaline‐earth metal tetrelides: Alternative filling of voids by nitride or tetrelide ions Open
Large black single crystals with a metallic luster of Li 16 Sr 6 Ge 6 N and several other representatives of the series Li 16 A e 6 T t 6 N and Li 16 A e 6 T t 6.5 ( A e =Ca, Sr; T t =Si, Ge, Sn, Pb) were grown from mixtures of the respect…