[2+2] versus [3+2] Addition of Metal Oxides Across CC Double Bonds:  Toward an Understanding of the Surprising Chemo- and Periselectivity of Transition-Metal-Oxide Additions to Ketene†

2001 ◽  
Vol 123 (41) ◽  
pp. 10085-10094 ◽  
Author(s):  
Dirk V. Deubel ◽  
Sabine Schlecht ◽  
Gernot Frenking
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxide ◽  
Double Bonds

An electroless-plating-like solution deposition approach for large-area flexible thin films of transition metal oxide nanocrystals

2014 ◽  
Vol 2 (12) ◽  
pp. 2266-2271 ◽  
Author(s):  
Liangzhuan Wu ◽  
Yuan Yu ◽  
Xianying Han ◽  
Yuan Zhang ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Electroless Plating ◽  
Transition Metal Oxides ◽  
Transition Metal Oxide ◽  
Large Area ◽  
Solution Deposition

We report an electroless-plating-like solution deposition approach for large-area flexible thin films of crystalline transition metal oxides.

scholarly journals Crossover of positive and negative magnetoconductance in composites of nanosilica glass containing dual transition metal oxides

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 16106-16121
Author(s):  
Subha Samanta ◽  
Anupam Maity ◽  
Alorika Chatterjee ◽  
Saurav Giri ◽  
Dipankar Chakravorty
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Transition Metal Oxide ◽  
Oxide Ions

Magnetoconductance swithching phenomenon in nanosilica glass containing dual transition metal oxide ions.

Sodium transition metal oxides: the preferred cathode choice for future sodium-ion batteries?

2021 ◽  
Author(s):  
Qiannan Liu ◽  
Zhe Hu ◽  
Weijie Li ◽  
Chao Zou ◽  
Huile Jin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Capacity ◽  
Transition Metal Oxide ◽  
Sodium Ion ◽  
Redox Activity ◽  
Sodium Ion Batteries ◽  
Oxide Cathodes

This work provides guidance on controlling anionic redox activity and finding novel high-capacity transition metal oxide cathodes for sodium-ion batteries.

Conductive Polymer/Transition Metal Oxide Hybrid Materials for Lithium Batteries

2002 ◽  
Vol 726 ◽  
Author(s):  
Chai-Won Kwon ◽  
Armel Poquet ◽  
Stéphane Mornet ◽  
Guy Campet ◽  
Josik Portier ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Hybrid Materials ◽  
Vanadium Pentoxide ◽  
Transition Metal Oxides ◽  
Conductive Polymer ◽  
Transition Metal Oxide ◽  
Core Shell ◽  
Potential Range

AbstractOrganic-inorganic hybrid materials were synthesized for use of lithium battery electrode by two strategies: 1) core-shell strategy for tri-dimensional transition metal oxide and 2) intercalation strategy for bi-dimensional (lamellar) transition metal oxide. We choose conductive polymers as an organic component for high electric conductivity and 3d-transition metal oxides as an inorganic counterpart for large capacity and processibility. Polypyrrole/maghemite and poly(3,4-ethylenedioxythiophene) (PEDOT)/vanadium pentoxide hybrids will be presented and compared with their pristine materials for core-shell and intercalation strategies, respectively. Polypyrrole/maghemite showed an enhanced electrochemical reversibility and capacity up to ∼270 mAh/g in the potential range between 1.3 and 4.3 V vs. Li at 8 mA/g. PEDOT/vanadium pentoxide also exhibited improved reversibility and capacity up to ∼330 mAh/g at 15 mA/g between 2.0 ∼ 4.4 V vs. Li on the second discharge. XRD, IR, electron microscopy, XPS and Xray absorption spectroscopy were used to characterize the samples, and to examine oxidation state of the transition metals, doping character of the polymer and the nature of interaction between the polymer and the transition metal oxides.

Transition Metal Oxides for Rocking-Chair Cells

1994 ◽  
Vol 369 ◽  
Author(s):  
M. M. Thackeray ◽  
E. Ferg ◽  
R. J. Gummow ◽  
A. De Kock
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Low Voltage ◽  
Lithium Ion ◽  
Cell Voltage ◽  
Transition Metal Oxide ◽  
Carbon Anode ◽  
Lithium Cells

AbstractTransition metal oxides have been evaluated extensively in the past as cathode materials for lithium cells. The major emphasis of recent research has been to develop lithium-ion or rockingchair cells that are assembled in the discharged state with a lithiated transition metal oxide cathode and a carbon anode. Although these cells are significantly safer to use than lithium cells with metallic lithium anodes, the possibility of depositing lithium at the surface of the carbon particles at the top of charge or at high rates of charge cannot be discounted. This paper discusses some recent developments in fabricating rocking-chair cells with transition metal oxide host structures as both anode and cathode, the anode providing a relatively low voltage vs. lithium and the cathode a relatively highvoltage vs. lithium. These cells avoid the reduction and oxidation of lithium during charge and discharge and, therefore, reduce the safety hazards of lithium cells. Improved safety is gained, however, at the expense of cell voltage and specific energy.

Time-dependent DFT and experimental study on visible light photocatalysis by metal oxides of Ti, V and Zn after complexing with a conjugated polymer

2019 ◽  
Vol 43 (3) ◽  
pp. 1505-1516 ◽  
Author(s):  
Navjot Kaur ◽  
Komal Komal ◽  
Shuchi Gupta ◽  
Vinod Kumar ◽  
K. B. Tikoo ◽  
...  
Keyword(s):  
Experimental Study ◽  
Transition Metal ◽  
Metal Oxide ◽  
Visible Light ◽  
Metal Oxides ◽  
Conjugated Polymer ◽  
Transition Metal Oxide ◽  
Time Dependent ◽  
Visible Light Photocatalysis ◽  
Structural Modifications

Tuning the photoactive behavior of transition metal oxide (Ti2O4, V2O5, Zn3O3) cluster units by structural modifications with polythiophene.

Effects of a conductive support on the bonding of oxygen containing molecules to transition metal oxide surfaces

2020 ◽  
Vol 22 (45) ◽  
pp. 26216-26222
Author(s):  
Hao Li ◽  
Jens K. Nørskov
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Transition Metal Oxide ◽  
Wide Bandgap ◽  
Oxide Surfaces ◽  
Metal Oxide Surfaces ◽  
Marked Enhancement ◽  
Metal Support

The presence of a metal support leads to a marked enhancement of ORR/OER adsorbate binding strengths on wide bandgap transition metal oxides.

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