Electrolytes enable conduction of ions in a battery across the electrodes. One of the most important properties of an electrolyte material is its electrochemical window, which determines overall safety of the battery. Electrochemical window (also known as HOMO LUMO gap or bandgap) is calculated in the present work for polyethylene oxide (PEO) with different chemistries using a combination of Hartree-Fock and density functional theory (DFT) techniques. The aim is to study how the bandgap can be varied with different functional groups added to the polymer.

This is CSTEP's Annual Report for the year 2010-11.

The threat of climate change is a serious global concern. There is near consensus among scientists that the threat is due to man-made emissions of Greenhouse Gases (such as Carbon Dioxide, Methane, Nitrous Oxides, etc).

Sodium intercalation batteries might prove to be a viable alternative of lithium ion batteries, which is both expensive and in short supply due to unavailability of lithium .Renewable energy sources being crucial to India's energy future, there is a huge need to develop scalable and cost effective storage technology with earth abundant materials to provide load balancing. Moving from lithium to sodium ion intercalation materials, electrochemical properties change significantly and electrochemical potential of intercalation drops.

Addressing the challenges of RE manufacturing in India: Horizon 2032

In essence this paper seeks to answer the question: what are the essential elements of
designing as a human activity that makes it possible to transfer these skills and attitudes
beyond the world of design?

The success of the Jawaharlal Nehru National Solar Mission depends on certain critical features – the subsidy structure, the role of standardised systems and institutional models of delivery As the actual costs of small systems are considerably higher, on a per watt basis, than the benchmark costs assumed for the subsidy, smaller systems that are within the reach of the rural poor receive lower subsidies than larger systems.

India's diesel consumption is several times that of petrol In this article, we examine two options for meeting India's diesel demand: coal to liquids and bio-diesel Coal gasification, followed by Fischer-Tropsch (FT) synthesis offers an opportunity for large-scale production of diesel as proven by South Africa, and now being attempted by China and Qatar. India could consider this option given its large coal reserves.

Recently a simple explicit model was introduced to represent the J–V characteristics of an illuminated solar cell with parasitic resistances and bias dependent photocurrent as vm + jn = 1. Here the normalized voltage, v and normalized current density j can be represented as v = V/Voc and j = J/Jsc respectively, where Voc is the open circuit voltage and Jsc is the short circuit current density. This model is useful for design, characterization and simple fill factor calculation and its applicability was demonstrated with the measured data of a wide variety of solar cells.

Due to stochastic nature of wind distribution, wind power output comes with unscheduled changes called ramp events. In this paper, a semi-analytical approach is considered to analyze the distribution of ramp events. A simple empirical equation is derived based on the probability of wind ramp events considering the stochastic nature of wind power distribution for the Indian state of Karnataka.