A facile freeze-thaw ultrasonic assisted circulation method of graphite flakes prepared by anode graphite from spent lithium-ion batteries for application in nanofluids

2021 ◽  
Author(s):  
Yu Qiao ◽  
Wen Sheng ◽  
Chen He ◽  
Bai Yang ◽  
Haoxuan Xu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Assisted Circulation ◽  
Layered Crystal ◽  
Circulation Method ◽  
Freeze Thaw ◽  
Layered Crystal Structure ◽  
Ultrasonic Assisted ◽  
Discharge Potential

Graphite has been widely used as the anode material in lithium-ion batteries (LIBs) due to its good conductivity, layered crystal structure, high charging-discharge potential, and other characteristics. With the rapid...

Carbon nanotubes coupled with layered graphite to support SnTe nanodots as high-rate and ultra-stable lithium-ion battery anodes

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3782-3789
Author(s):  
Huanhui Chen ◽  
Guanxia Ke ◽  
Xiaochao Wu ◽  
Wanqing Li ◽  
Hongwei Mi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Nanotubes ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
High Rate ◽  
Layered Crystal ◽  
Ion Diffusion ◽  
Promising Candidate ◽  
Layered Crystal Structure ◽  
Li Ion

SnTe exhibits a layered crystal structure, which enables fast Li-ion diffusion and easy storage, and is considered to be a promising candidate for an advanced anode material.

scholarly journals The layered crystal structure of bis(theophyllinium) hexachloridostannate (IV), C14H18N8O8SnCl6

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Guido J. Reiss ◽  
Maik Wyshusek
Keyword(s):  
Crystal Structure ◽  
Layered Crystal ◽  
Layered Crystal Structure

Abstract C14H18N8O8SnCl6, monoclinic, P21/n (no. 14), a = 8.1810(2) Å, b = 12.6195(3) Å, c = 11.3811(2) Å, β = 90.258(2)°, Z = 2, V = 1174.97(5) Å3, R gt(F) = 0.0266, wR ref = 0.0620, T = 290 K.

Crystal structure of oxybutynin hydrochloride hemihydrate, C22H32NO3Cl(H2O)0.5

2019 ◽  
Vol 34 (1) ◽  
pp. 50-58
Author(s):  
James A. Kaduk ◽  
Nicholas C. Boaz ◽  
Amy M. Gindhart ◽  
Thomas N. Blanton
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Powder Diffraction ◽  
Density Functional ◽  
Hydroxyl Group ◽  
Layered Crystal ◽  
Powder Diffraction File ◽  
X Ray ◽  
Layered Crystal Structure ◽  
Oxybutynin Hydrochloride

The crystal structure of oxybutynin hydrochloride hemihydrate has been solved and refined using synchrotron X-ray powder diffraction data, and optimized using density functional techniques. Oxybutynin hydrochloride hemihydrate crystallizes in space group I2/a (#15) with a = 14.57266(8), b = 8.18550(6), c = 37.16842(26) Å, β = 91.8708(4)°, V = 4421.25(7) Å3, and Z = 8. The compound exhibits X-ray-induced photoreduction of the triple bond. Prominent in the layered crystal structure is the N–H⋅⋅⋅Cl hydrogen bond between the cation and anion, as well as O–H⋅⋅⋅Cl hydrogen bonds from the water molecule and hydroxyl group of the oxybutynin cation. C–H⋅⋅⋅Cl hydrogen bonds also contribute to the crystal energy, and help determine the conformation of the cation. The powder pattern is included in the Powder Diffraction File™ as entry 00-068-1305.

scholarly journals Study of anisotropic thermal conductivity in textured thermoelectric alloys by Raman spectroscopy

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24456-24465
Author(s):  
Rapaka S. C. Bose ◽  
K. Ramesh
Keyword(s):  
Crystal Structure ◽  
Thermal Conductivity ◽  
Raman Spectroscopy ◽  
Transport Properties ◽  
Thermal Transport ◽  
Layered Crystal ◽  
Layered Crystal Structure ◽  
Thermal Transport Properties ◽  
Anisotropic Thermal Conductivity ◽  
P Type

Polycrystalline p-type Sb1.5Bi0.5Te3 (SBT) and n-type Bi2Te2.7Se0.3 (BTS) compounds possessing layered crystal structure show anisotropic electronic and thermal transport properties.

Synthesis, crystal and electronic structure of BaLi2Cd2Ge2

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sviatoslav Baranets ◽  
Alexander Ovchinnikov ◽  
Svilen Bobev
Keyword(s):  
Crystal Structure ◽  
Electronic Structure ◽  
Fermi Level ◽  
Structure Type ◽  
Layered Crystal ◽  
Electronic Density ◽  
Electronic Band ◽  
Cell Parameters ◽  
Layered Crystal Structure ◽  
Electronic Band Gap

Abstract A new quaternary germanide has been synthesized and structurally characterized. BaLi2Cd2Ge2 adopts the rhombohedral CaCu4P2 structure type (Pearson code hR7; space group R 3 ‾ m $R‾{3}m$ , Z = 3) with unit cell parameters a = 4.5929(6) and c = 26.119(5) Å. Structure refinements from single-crystal X-ray diffraction data demonstrate that the layered crystal structure can be regarded as an ordered quaternary variant of the ternary archetype; structural parallels to layered pnictides and binary germanides can also be drawn. The layered crystal structure is characterized by the absence of direct Ge–Ge and Cd–Cd homoatomic bonds, which suggests that BaLi2Cd2Ge2 should be classified as a Zintl phase, according to the formulation (Ba2+)(Li+)2(Cd2+)2(Ge4−)2. Electronic structure calculations show that the Fermi level crosses a distinct peak in the DOS, although the presence of an electronic band gap or a dip in the electronic density of states at the Fermi level is expected based on the electron partitioning.

scholarly journals Facile One-Step Hydrothermal Synthesis of the rGO@Ni3V2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2389
Author(s):  
Faizan Ghani ◽  
In Wook Nah ◽  
Hyung-Seok Kim ◽  
JongChoo Lim ◽  
Afifa Marium ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Lithium Ion Batteries ◽  
High Surface ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
High Energy ◽  
Hollow Microspheres ◽  
High Energy Density ◽  
Layered Crystal ◽  
One Step

Low-cost, vanadium-based mixed metal oxides mostly have a layered crystal structure with excellent kinetics for lithium-ion batteries, providing high energy density. The existence of multiple oxidation states and the coordination chemistry of vanadium require cost-effective, robust techniques to synthesize the scaling up of their morphology and surface properties. Hydrothermal synthesis is one of the most suitable techniques to achieve pure phase and multiple morphologies under various conditions of temperature and pressure. We attained a simple one-step hydrothermal approach to synthesize the reduced graphene oxide coated Nickel Vanadate (rGO@Ni3V2O8) composite with interconnected hollow microspheres. The self-assembly route produced microspheres, which were interconnected under hydrothermal treatment. Cyclic performance determined the initial discharge/charge capacities of 1209.76/839.85 mAh g−1 at the current density of 200 mA g−1 with a columbic efficiency of 69.42%, which improved to 99.64% after 100 cycles. High electrochemical performance was observed due to high surface area, the porous nature of the interconnected hollow microspheres, and rGO induction. These properties increased the contact area between electrode and electrolyte, the active surface of the electrodes, and enhanced electrolyte penetration, which improved Li-ion diffusivity and electronic conductivity.

A two-dimensional ion-pump of a vanadium pentoxide nanofluidic membrane

2019 ◽  
Vol 7 (17) ◽  
pp. 10552-10560 ◽  
Author(s):  
Raj Kumar Gogoi ◽  
Arindom Bikash Neog ◽  
Tukhar Jyoti Konch ◽  
Neelam Sarmah ◽  
Kalyan Raidongia
Keyword(s):  
Crystal Structure ◽  
Vanadium Pentoxide ◽  
Concentration Gradient ◽  
Layered Crystal ◽  
Ion Pump ◽  
Two Dimensional ◽  
Reactive Surface ◽  
Layered Crystal Structure

The reactive surface and layered crystal structure of vanadium pentoxide (V2O5) are exploited here to prepare a two-dimensional (2D) ion pump that transports ions against their concentration gradient.

Wafer-scale synthesis of ultrathin CoO nanosheets with enhanced electrochemical catalytic properties

2017 ◽  
Vol 5 (19) ◽  
pp. 9060-9066 ◽  
Author(s):  
Fei Wang ◽  
Yanhao Yu ◽  
Xin Yin ◽  
Peng Tian ◽  
Xudong Wang
Keyword(s):  
Crystal Structure ◽  
Catalytic Properties ◽  
Grand Challenge ◽  
Layered Crystal ◽  
Two Dimensional ◽  
Large Area ◽  
Wafer Scale ◽  
Layered Crystal Structure ◽  
2D Nanomaterials

Large area synthesis of two dimensional (2D) nanomaterials with a non-layered crystal structure remains a grand challenge.

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