The reversible heat effects at lithium iron phosphate- and graphite electrodes

leadership styles of tefl instructors at gilan university and their effects on the students attitudes and motivation

the subjects of the study are only the tefl teachers and students at gilan university. to obtain the desired data, a questionnaire which was based on the theories and disecussions gathered, was used as the main data gathering instrument. to determine the degree of relationship between variables, covariance and pearson product moment correlation coefficient were the formulas applied. the data we...

Highly reversible lithium/dissolved polysulfide batteries with carbon nanotube electrodes.

A density functional theory study of the carbon-coating effects on lithium iron borate battery electrodes.

Lithium iron borate (LiFeBO3) is a promising cathode material due to its high theoretical specific capacity, inexpensive components and small volume change during operation. Yet, challenges related to severe air- and moisture-induced degradation have prompted the utilization of a protective coating on the electrode which also improves the electronic conductivity. However, not much is known abou...

Charge Localization in the Lithium Iron Phosphate Li3Fe2(PO4)3 at High Voltages in Lithium-Ion Batteries.

Possible changes in the oxidation state of the oxygen ion in the lithium iron phosphate Li3Fe2(PO4)3 at high voltages in lithium-ion (Li-ion) batteries are studied using experimental and computational analysis. Results obtained from synchrotron-based hard X-ray photoelectron spectroscopy and density functional theory (DFT) show that the oxidation state of O(2-) ions is altered to higher oxidati...

Comment on electrochemical kinetics at ordered graphite electrodes.

A carbon electrodes have been used in electrochemistry for more than a century, there has been renewed recent interest in electron transfer at carbon surfaces due to the development of graphene and carbon nanotube (CNT) materials. This Comment regards reports of heterogeneous electron transfer (ET) rates on highly ordered pyrolytic graphite (HOPG), which is often used as a model for single crys...