Pentadecacopper(II) bisdiborate hexaorthoborate dioxide

Behm, H.

doi:10.1107/s0567740882009947

Cited by 28 publications

(24 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…If these three longer distances are considered to be a weak-bonding interaction, then the coordination environment around Pb should be described as a distorted seven coordinate polyhedron. [24]. The BO 3 groups are quite regular.…”

Section: Crystal Structure Of Pb 2 Cub 2 Omentioning

confidence: 91%

Synthesis, structure and properties of Pb2CuB2O6

Pan

Smit

Marvel

et al. 2006

Materials Research Bulletin

View full text Add to dashboard Cite

Single crystals of Pb 2 CuB 2 O 6 were grown from a PbO/CuO/B 2 O 3 flux, and crystallize in a monoclinic cell of dimensions a = 5.6311(6), b = 8.7628(9), c = 6.2025(6) Å , and b = 115.7060(10)8 with Z = 2; the space group is P2 1 /c (no. 14). The structure was determined from 662 unique reflections and refined to the final residuals R 1 = 0.0217, wR 2 = 0.0586. The structure is characterized by the two-dimensional layer of interconnected rectangular planar CuO 4 and triangular planar BO 3 groups. The results of quantitative analysis ICP, DTA, vibrational spectroscopy, and magnetic investigations are also presented. #

show abstract

Section: Crystal Structure Of Pb 2 Cub 2 Omentioning

confidence: 91%

Synthesis, structure and properties of Pb2CuB2O6

Pan

Smit

Marvel

et al. 2006

Materials Research Bulletin

View full text Add to dashboard Cite

show abstract

“…However, with enhanced electronic conductivity in a carbon-rich cathode mixture, the reversibility is significantly improved and allows to reach the Cu(II) state again during charging. The further capacity loss is caused by the growth of passivation layers on the converted particles, which consist mainly of LiF, independent on the Li-containing salt LiPF 6 or LiBOB in the electrolyte. Although a high carbon additive improves reversibility, it reduces the overall cathode capacity.…”

Section: Discussionmentioning

confidence: 99%

“…Stoichiometric amounts of CuO copper oxide and boric acid H 3 BO 3 were mixed, pressed into pellets, and put into a furnace at 900 C. After 24 h, the material was reground, pressed into pellets and heated for additional 24 h. The obtained green powder was characterized by XRD which confirmed the purity of the Cu 3 B 2 O 6 phase. 6 This phase crystallizes in a triclinic structure with a ¼ 3.3620(3) Å , b ¼ 19.681(2) Å , c ¼ 19.673(2) Å , a ¼ 88.821 (6) , b ¼ 69.703 (6) , c ¼ 70.063 (7) . The particles size of the active material affects the capacity stability during cycling.…”

Section: Methodsmentioning

confidence: 99%

“…6 Within each layer, the Cu atoms have a nearly quadratic planar coordination of oxygen atoms. The shortest Cu-O distance to the oxygen atom in the neighboring layer is 2.4021 Å .…”

mentioning

confidence: 99%

“…The crystal structure of the overall composition "Li 1 Cu 3 B 2 O 6 " was studied in detail. Furthermore, the Solid-Electrolyte Interphase (SEI) on the surface of the Cu 3 B 2 O 6 cathode particles was analyzed for the different electrolyte salts LiFP 6 and LiBOB. Finally, the cycle stability was investigated in dependence on the amount of carbon as the conducting additive in the cathode mixture.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Study of the Conversion Reaction Mechanism for Copper Borate as Electrode Material in Lithium-Ion Batteries

Parzych

Mikhailova

Oswald

et al. 2011

J. Electrochem. Soc.

View full text Add to dashboard Cite

A conversion reaction mechanism of Cu 3 B 2 O 6 during the electrochemical reduction in a Li-ion battery test cell was revealed. Different experimental techniques were used: X-ray diffraction (XRD), in situ synchrotron diffraction, quasi in situ X-ray photoelectron and Auger-electron spectroscopy (XPS and AES), and ex situ scanning electron microscopy (SEM). The reduction process changes the initial oxidation state of copper from Cu(II) to Cu(0). After the subsequent oxidation, only the Cu(I) state was recovered. However, a very high amount of carbon in the cathode mixture (65% w/w) enables the reversion of the Cu(II) state due to improved electronic conductivity. Synchrotron in situ diffraction did not indicate any significant change in the lattice parameters of Cu 3 B 2 O 6 during any stage of reduction, which excludes a Li-intercalation mechanism. The present rechargeable lithium-ion batteries operate based on intercalation processes. These processes require electrode materials with open crystallographic structures, into which lithium ions can be inserted without reconstructive phase transitions. The change of the metal oxidation state is therefore limited by the available vacant sites for Li-ions in the underlying crystal structures. Higher capacities can be achieved in a conversion reaction, which does not preserve the initial structure type.

show abstract

Ein neues Kupfercobaltboratoxid mit isolierten B₂O₅‐Baugruppen: Cu₂Co(B₂O₅)O

Schaefer

Bluhm

1994

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

Inhaitsiihersichl. Untci-Vcrwendung einer BzO,-Schmclze verzerrt ok raedriscb koordinicrt und bildcn dunch KaIIteIlVergelang die Synlhese von Einkristalleri eirier Substanz tnit dcr kniipl'urigeri der Polycdcr in zwci Richtungcn cin Nctzwerk aus Summenformel CuzCoB,O,,, die eirieri eigenstandigcn, neu-Oklaederb;indci-n. Dic Struktur weist isolierte B,Oi-Baugrupartigen Slruklurtyp bildet. Sie krislallisicrt in dcr Raunigruppe pcn ;ruf und zudeni Sauerstoff, cler nichl an 13or gchundcn ist.

show abstract

Pentadecacopper(II) bisdiborate hexaorthoborate dioxide

Cited by 28 publications

References 4 publications

Synthesis, structure and properties of Pb2CuB2O6

Synthesis, structure and properties of Pb2CuB2O6

Study of the Conversion Reaction Mechanism for Copper Borate as Electrode Material in Lithium-Ion Batteries

Ein neues Kupfercobaltboratoxid mit isolierten B₂O₅‐Baugruppen: Cu₂Co(B₂O₅)O

Contact Info

Product

Resources

About

Pentadecacopper(II) bisdiborate hexaorthoborate dioxide

Cited by 28 publications

References 4 publications

Synthesis, structure and properties of Pb2CuB2O6

Synthesis, structure and properties of Pb2CuB2O6

Study of the Conversion Reaction Mechanism for Copper Borate as Electrode Material in Lithium-Ion Batteries

Ein neues Kupfercobaltboratoxid mit isolierten B2O5‐Baugruppen: Cu2Co(B2O5)O

Contact Info

Product

Resources

About

Ein neues Kupfercobaltboratoxid mit isolierten B₂O₅‐Baugruppen: Cu₂Co(B₂O₅)O