Pandy Periasamy

• BBA,MBA,M.Phil, UGC-NET., (Ph.D)
• Professor (Associate) at Agni College of Technolgy

ElNino is the irregular climate conditions which created by the warming of the pacific sea close to the equator, off the shore of South America. This happens when the typical exchange winds debilitate (or even switch), which lets the warm water that is generally found in the western Pacific stream rather towards the east. This warm water uproots th...

This article is a new endeavor to find out the performance of the commodity derivative exchanges in India with the help of the total contribution or volume or trade done in each and every major commodity exchanges in India and the data compiled for the year 2012 and 2013 from the period of April 2012 to March 2013 and number of commodities traded i...

This article is a new endeavor to find out the different operating nuances of stock market and commodity market in India for the period of 2008 to 2013, with the help of the research tools like, Standard Deviation, Portfolio Risk and Portfolio Return, Correlation, Relative Strength Index (RSI), Simple Moving Average (SMA) to find out the players in...

The emerging category cathode candidates such as LiCoPO4 and LiNiPO4 were synthesized at 800°C using Citric acid assisted modified sol–gel (CAM sol–gel) method and examined for possible lithium intercalation behavior. Compound formation temperature is confirmed from thermogravimetry and differential thermal analysis (TG/DTA). Powder X-ray diffracti...

An attempt has been made for the possible augmentation and exploration of partially substituted LiFePO4 material as a positive electrode for lithium battery applications. In this regard, cationic substitution of Cu and Sn (2%) to the native LiFePO4/C electro active material has been carried out via. ball milling, with a view to understand the effec...

A unique attempt to exploit silicate chemistry for a possible enhancement of the electrochemical properties of a lithium ion system via exploration of the novel category lithium intercalating LiNiSiO(4) cathode has been made through the present study. A novel citric acid assisted modified sol-gel method (CAM sol-gel) has been adopted to synthesize...

Possibility of synthesizing LiNi1/3Co1/3Mn1/3O2 cathode via., soft chemistry based Gelatin Assisted Combustion [GAC] approach has been examined through the present study. GAC method with a calcination temperature as high as 750°C for a period of 24h. was found to be essential to prepare LiNi1/3Co1/3Mn1/3O2 powders with good hexagonal ordering and b...

LiNiO2, partially substituted with manganese in the form of a LiNi0.5Mn0.5O2 compound, has been synthesized by a gelatin assisted combustion method [GAC] method. Highly crystalline LiNi0.5Mn0.5O2 powders with R3m symmetry have been obtained at an optimum temperature of 850°C, as confirmed by PXRD studies. The presence of cathodic and anodic CV peak...

LiMn2O4 is an attractive 4 V positive material in lithium rechargeable batteries owing to its favourable electrochemical characteristics besides its economic and environmental advantages. However, problems of limited cyclability, especially at elevated temperatures, have limited the utility and commercialization of this cathode material. Stabilizat...

A series of divalent non-transition metal, especially Mg doped LiCoO2 solid solutions with the general formula LiMgxCo1−xO2 (x=0.00–0.20) was synthesized by the solid state fusion method trying to reduce the cost and toxicity, and to improve the overall electrochemical cell performance. All synthesized cathodes were characterized by XRD, TG/DTA, FT...

LiNiVO4, an inverse spinel containing lithium, nickel and vanadium ions respectively in their +1, +2 and +5 oxidation states is still being considered as an arguably interesting compound of high voltage cathode, for the possible existence of deliberate tunnels to facilitate the movement of Li+ ions. To circumvent the problems related to the require...

A series of gel polymer electrolytes containing PVdF as homo polymer, a mixture of 1:1 Ethylene Carbonate (EC) : Propylene Carbonate (PC) as plasticizer and lithium-bistrifluoromethane sulphone imide [imide — LiN (CF3SO2)2] has been developed. Amounts of polymer (PVdF), plasticizer and the imide lithium salt have been varied as a function of their...

Quaternary oxides of compositions LiNiyCo1−yO2 (y=0.0, 0.1, 0.2, 0.3 and 0.4) were synthesized using a solid-state route from carbonate precursors. Material characterization was carried out using XRD, FTIR and particle size analyses. The formation patterns of the products are discussed from TG-DTA results. Nickel-rich compositions gave higher disch...

LiMn2O4 spinel is one of the most promising cathode materials for lithium-ion batteries because of its cheapness and eco-friendliness. Due to Jahn-Teller distortion, the capacity fades, however, upon repeated cycling. Attempts are being made to improve the cycle life of the spinel by substitution of manganese with other cations. In this paper we re...

Spinel lithium manganese oxide, LiMn2O4, is beset with problems of capacity fade upon repeated cycling. The loss in capacity upon cycling is attributable to Jahn-Teller distortion and manganese dissolution in the electrolyte in the charged state. One way to circumvent this capacity fade is to introduce other 3d bdtransition metal ions in the LiMn2O...

Solid solutions of compositions LiNiy Co1−y O2 (y = 0.0, 0.1 and 0.2) were prepared by solid-state fusion synthesis from carbonate precursors. Material characterization was carried out using XRD. Formation mechanisms of the products are discussed in the light of TG/DTA results. Nickel-containing compositions gave higher discharge capacities and sma...