Structural and silver/vanadium ratio effects on silver vanadium phosphorous oxide solution formation kinetics: Impact on battery electrochemistry

2015 ◽  
Vol 17 (3) ◽  
pp. 2034-2042 ◽  
Author(s):  
David C. Bock ◽  
Kenneth J. Takeuchi ◽  
Amy C. Marschilok ◽  
Esther S. Takeuchi
Keyword(s):  
Failure Mechanism ◽  
Cathode Materials ◽  
Formation Kinetics ◽  
Solution Formation ◽  
Aqueous Battery ◽  
Silver Vanadium Phosphorous Oxide ◽  
Battery Electrolyte

This study contains the first kinetic analyses of silver and vanadium solution formation from Ag0.48VOPO4·1.9H2O and Ag2VP2O8, in a non-aqueous battery electrolyte. The results presented here provide a framework for the quantitative and kinetic analyses of the dissolution of cathode materials which will aid the broader community in more fully understanding this battery failure mechanism.

Structure and Transport of Solvent Ligated Octahedral Mg-Ion in an Aqueous Battery Electrolyte

2021 ◽  
Vol 66 (3) ◽  
pp. 1543-1554
Author(s):  
Thejus R. Kartha ◽  
Bhabani S. Mallik
Keyword(s):  
Aqueous Battery ◽  
Battery Electrolyte

scholarly journals Understanding cation-disordered rocksalt oxyfluoride cathodes

2021 ◽  
Vol 9 (12) ◽  
pp. 7826-7837
Author(s):  
Dongchang Chen ◽  
Juhyeon Ahn ◽  
Ethan Self ◽  
Jagjit Nanda ◽  
Guoying Chen
Keyword(s):  
Transition Metal ◽  
Failure Mechanism ◽  
Cathode Materials ◽  
Atomic Level ◽  
Cationic Sublattice ◽  
Anionic Sublattice ◽  
Oxygen Fluorine

A “concerted-densification” based failure mechanism, involving atomic-level changes in both transition-metal cationic sublattice and oxygen/fluorine anionic sublattice, is proposed for the degradation of F-DRX cathode materials.

scholarly journals Covalently functionalized carbon nanotubes as stable cathode materials of lithium/organic batteries

2016 ◽  
Vol 4 (39) ◽  
pp. 15036-15040 ◽  
Author(s):  
G. Charrier ◽  
A. Desrues ◽  
C. Barchasz ◽  
J. Leroy ◽  
R. Cornut ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cathode Materials ◽  
Functionalized Carbon Nanotubes ◽  
Li Battery ◽  
Battery Electrolyte ◽  
Organic Batteries

Anthraquinone molecules are grafted onto carbon nanotubes in order to avoid their dissolution in the Li battery electrolyte.

Laser-Based Formation and Properties of Gold Nanoparticles in Aqueous Solution: Formation Kinetics and Surfactant-Modified Particle Size Distributions

2010 ◽  
Vol 114 (38) ◽  
pp. 15931-15940 ◽  
Author(s):  
Yuen-Yan Fong ◽  
Jason R. Gascooke ◽  
Bradley R. Visser ◽  
Gregory F. Metha ◽  
Mark A. Buntine
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Gold Nanoparticles ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Formation Kinetics ◽  
Solution Formation

scholarly journals Graphitic Carbon Quantum Dots Modified Nickel Cobalt Sulfide as Cathode Materials for Alkaline Aqueous Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Yirong Zhu ◽  
Jingying Li ◽  
Xiaoru Yun ◽  
Ganggang Zhao ◽  
Peng Ge ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cathode Materials ◽  
Rational Design ◽  
Specific Capacity ◽  
Carbon Quantum Dots ◽  
Cycle Performance ◽  
High Yield ◽  
Cobalt Sulfide ◽  
Specific Power ◽  
Aqueous Battery

AbstractCarbon quantum dots (CQDs) as a new class of emerging materials have gradually drawn researchers’ concern in recent years. In this work, the graphitic CQDs are prepared through a scalable approach, achieving a high yield with more than 50%. The obtained CQDs are further used as structure-directing and conductive agents to synthesize novel N,S-CQDs/NiCo2S4 composite cathode materials, manifesting the enhanced electrochemical properties resulted from the synergistic effect of highly conductive N,S-codoped CQDs offering fast electronic transport and unique micro-/nanostructured NiCo2S4 microspheres with Faradaic redox characteristic contributing large capacity. Moreover, the nitrogen-doped reduced graphene oxide (N-rGO)/Fe2O3 composite anode materials exhibit ultrahigh specific capacity as well as significantly improved rate property and cycle performance originating from the high-capacity prism-like Fe2O3 hexahedrons tightly wrapped by highly conductive N-rGO. A novel alkaline aqueous battery assembled by these materials displays a specific energy (50.2 Wh kg−1), ultrahigh specific power (9.7 kW kg−1) and excellent cycling performance with 91.5% of capacity retention at 3 A g−1 for 5000 cycles. The present research offers a valuable guidance for the exploitation of advanced energy storage devices by the rational design and selection of battery/capacitive composite materials.

Na-containing manganese-based cathode materials synthesized by sol-gel method for zinc-based rechargeable aqueous battery

2020 ◽  
pp. 157744
Author(s):  
Xianwen Wu ◽  
Shihao Zhou ◽  
Yuting Li ◽  
Sinian Yang ◽  
Yanhong Xiang ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Aqueous Battery

Temperature Effect on Solid Solution Formation Mechanism and Kinetics of Cu-Zn System under High Pressure Torsion

2014 ◽  
Vol 1013 ◽  
pp. 218-223
Author(s):  
Temofei Tolmachev ◽  
Vitaly Pilyugin ◽  
Alexander Patselov ◽  
Eugeny Chernyshov
Keyword(s):  
Solid Solution ◽  
High Pressure Torsion ◽  
Deformation Mechanisms ◽  
Thermal Impact ◽  
Structural And Phase Transformations ◽  
Solid Solution Formation ◽  
Formation Kinetics ◽  
Solution Formation ◽  
Mechanism And Kinetics ◽  
Kinetics Of

Influence of a nearly room and cryogenic severe deformation of a Cu-Zn powder mixture on a structural and phase transitions and kinetics of mechanical alloying was investigated. A sufficient retardation of structural and phase transformations and low homogeneity of solid solution made at 80K were established in comparison to processing at 273K. A lowering of solution formation kinetics rate is supposed to be due to lock of plastic deformation mechanisms, activated by thermal impact.

AEM investigation of ZrO2 solid solution formation in ZrO2/mullite composites

1984 ◽  
Vol 42 ◽  
pp. 408-409
Author(s):  
T. R. Dinger
Keyword(s):  
Solid Solution ◽  
Ion Beam ◽  
Analytical Electron Microscopy ◽  
Transformation Toughening ◽  
Solid Solution Formation ◽  
Solution Formation ◽  
Propagating Crack ◽  
Analytical Electron ◽  
Microcrack Toughening ◽  
Made In

Zirconia (ZrO2) is often added to ceramic compacts to increase their toughness. The mechanisms by which this toughness increase occurs are generally accepted to be those of transformation toughening and microcracking. The mechanism of transformation toughening is based on the presence of metastable tetragonal ZrO2 which transforms to the monoclinic allotrope when stressed by a propagating crack. The decrease in volume which accompanies this transformation effectively relieves the applied stress at the crack tip and toughens the material; microcrack toughening arises from the deflection of a propagating crack around sharply angular inclusions.These mechanisms, however, do not explain the toughness increases associated with the class of composites investigated here. Analytical electron microscopy (AEM) has been used to determine whether solid solution effects could be the cause of this increased toughness. Specimens of a mullite (3Al2O3·2SiO2) + 15 vol. % ZrO2 were prepared by the usual technique of mechanical thinning followed by ion beam milling. All observations were made in a Philips EM400 TEM/STEM microscope fitted with EDXS and EELS spectrometers.

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