scholarly journals The New Phenomenon of Lithium Electrochemical (De)Intercalation in Mineral Clay Materials and Their Potential Application in Rechargeable Batteries

1994 ◽  
Vol 16 (3-4) ◽  
pp. 145-152
Author(s):  
Shi-Jie Wen ◽  
Xiao-Tian Yin ◽  
L. Nazar
Keyword(s):  
Metal Oxide ◽  
Electronic Properties ◽  
Conducting Polymer ◽  
Potential Application ◽  
Rechargeable Batteries ◽  
First Time ◽  
Discharge Potential ◽  
Clay Materials

A new phenomenon of Li electrochemical (de)intercalation on the pure mineral clay materials has been evidenced for the first time. These tests are initialized by the idea of putting an electronic conducting polymer or a multi-valent metal oxide in the layer of the clay to modify the electronic properties and also to modulate the charge and discharge potential of the clay during the Lithium electrochemical (de)intercalation processing. In this paper, as the beginning of our research, we will first show the results of Lithium electrochemical charge and discharge processes on pure clay materials.

Heteroarray of cobalt(II)tetrasulfophthalocyanine and cobalt(II) tetrakis(N-methyl-4-pyridyl)porphyrin: synthesis, isolation and electronic properties

2012 ◽  
Vol 16 (02) ◽  
pp. 244-249 ◽  
Author(s):  
Thiago T. Tasso ◽  
Wania C. Moreira
Keyword(s):  
Electronic Properties ◽  
Spectroscopic Characterization ◽  
Charge Transfer Process ◽  
Isolation And Purification ◽  
Electronic Densities ◽  
Porphyrin Synthesis ◽  
A Charge ◽  
Job's Method ◽  
First Time

Porphyrin and phthalocyanine macrocycles with ionic substituents can form mixed assemblies with interesting electronic properties for potential application on the development of new devices. This paper reports the synthesis, isolation and purification of heteroaggregate formed by cobalt(II) 4,4′,4″,4‴-tetrasulfophthalocyanine (CoTsPc) and cobalt(II) tetrakis(N-methyl-4-pyridyl)porphyrin (CoTMPyP), followed by its spectroscopic characterization. Spectroscopic titration, performed with a CoTsPc water/acetone solution, allowed the use of Job's method for determination of the heteroaggregates stoichiometry. The Job's plot revealed the formation of only one predominant heterocomplex in solution, containing two CoTsPc molecules in terminal positions and a central CoTMPyP one. For the first time, a method for isolation and purification of a mixed ionic array has been reported in the literature. The triad's electronic spectrum is quite different from the sum of the macrocycles isolated spectra, due to the overlap of their electronic densities and a charge transfer process between CoTsPc and CoTMPyP.

A numerically efficient approach to the modelling of double-Qdot channels

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
A. Shamloo ◽  
A.P. Sowa
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Ab Initio ◽  
Quantum System ◽  
Electronic Properties ◽  
Density Of States ◽  
Potential Application ◽  
Ab Initio Simulation ◽  
Efficient Approach ◽  
Essential Properties

AbstractWe consider the electronic properties of a system consisting of two quantum dots in physical proximity, which we will refer to as the double-Qdot. Double-Qdots are attractive in light of their potential application to spin-based quantum computing and other electronic applications, e.g. as specialized sensors. Our main goal is to derive the essential properties of the double-Qdot from a model that is rigorous yet numerically tractable, and largely circumvents the complexities of an ab initio simulation. To this end we propose a novel Hamiltonian that captures the dynamics of a bi-partite quantum system, wherein the interaction is described via a Wiener-Hopf type operator. We subsequently describe the density of states function and derive the electronic properties of the underlying system. The analysis seems to capture a plethora of electronic profiles, and reveals the versatility of the proposed framework for double-Qdot channel modelling.

scholarly journals A Combined Computational and Experimental Study of Methane Activation during Oxidative Coupling of Methane (OCM) by Surface Metal Oxide Catalysts

2021 ◽  
Author(s):  
Daniyal Kiani ◽  
Sagar Sourav ◽  
Jonas Baltrusaitis ◽  
Israel E Wachs
Keyword(s):  
Experimental Study ◽  
Metal Oxide ◽  
Oxidative Coupling ◽  
Active Sites ◽  
Computational Models ◽  
Oxidative Coupling Of Methane ◽  
Catalytic Active Sites ◽  
Surface Metal ◽  
Heterolytic Dissociation ◽  
First Time

The experimentally validated computational models developed herein, for the first time, show that Mn-promotion does not enhance the activity of the surface Na2WO4 catalytic active sites for CH4 heterolytic dissociation...

Direct dehydrogenation of isobutane to isobutene over Zn-doped ZrO2 metal oxide heterogeneous catalysts

2018 ◽  
Vol 8 (19) ◽  
pp. 4916-4924 ◽  
Author(s):  
Yang Liu ◽  
Chengjie Xia ◽  
Qi Wang ◽  
Lei Zhang ◽  
Ao Huang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Heterogeneous Catalysts ◽  
First Time

A series of unconventional nano-sized Zn-doped ZnZrO-x catalysts are applied for the first time to the direct dehydrogenation of isobutane to isobutene.

One‐step Preparation of Conducting Polymer/Metal Oxide Doped RGO Trinary Composite for Supercapacitor Applications

2020 ◽  
Vol 5 (38) ◽  
pp. 11769-11777
Author(s):  
Pravin H. Wadekar ◽  
Rahul V. Khose ◽  
Dattatray A. Pethsangave ◽  
Surajit Some
Keyword(s):  
Metal Oxide ◽  
Conducting Polymer ◽  
Polymer Metal ◽  
One Step ◽  
Supercapacitor Applications

Synthesis and electronic properties of π-expanded carbazole-based porphyrins

2019 ◽  
Vol 55 (68) ◽  
pp. 10162-10165 ◽  
Author(s):  
Chihiro Maeda ◽  
Yumi Tanaka ◽  
Takuma Shirakawa ◽  
Tadashi Ema
Keyword(s):  
Electronic Properties ◽  
First Time ◽  
Pt Catalyzed

Peripheral π-expansion of carbazole-based porphyrins was achieved for the first time by the Pt-catalyzed cyclization and the incorporation of a benzocarbazole unit.

Sign in / Sign up

Export Citation Format

Share Document