Pyrophosphate and Metaphosphate as Next-generation Cathode Material for Energy Storage Devices

Students of Indian Institute of Science, Bangalore Ritambhara Gond, Krishnakanth Sada, Anshuman Chaupatnaik won the award for a Pyrophosphate and Metaphosphate as Next-generation Cathode Material for Energy Storage Devices. They carried their project work under the guidance of Prof. Prabeer Barpanda

These days it is very common to see portable electronics everywhere and soon petrol and diesel vehicles need to be replaced by electric vehicles to save our planet earth from global warming. The growing concern is to develop cost-effective, much safer, and long cycled life Li-ion batteries. Large storage devices such as for grid storage we need very efficient Na-ion batteries. The cathode, being a major component in any battery can alone raise the energy density of batteries up to 57% by doubling its capacity. Combining good electrochemical performance to safety and materials economy, chemists have discovered suites of cathode materials where the story started with oxides (e.g. LiCoO2 , LiMn2 O4 , LiMn3/2 Ni1/2 O4 , LiCo1/3, M 1/3, Ni1/3,O2 ), a plethora of polyanionic compounds have followed the suit. Among polyanionic compounds, LiFePO4 has seen the commercialization.

 

 

 

 

 

 

 

 

 

 

These polyanionic class of materials has been proven a ground for material discovery for Li-ion and Na-ion batteries with promising electrochemical performance along with chemical/ thermal stability, economy and operational safety. Lab-scale Na-ion batteries have been made from NaCo (PO3 )3 and NaFe(PO3 )3 but while studying intercalation chemistry, we found them to be a more efficient catalyst for metal-air batteries than the cathode. Another material which was studied and possible commercialization for large scale energy storage for Na-ion batteries can be imagined is pyrophosphate. Sodium metal pyrophosphate (Na2-x T M P2 O7 , T M = Fe, Co) forms an economic cathode alternative with a 3 V operation (vs Na/Na+) having capacity approaching 90 mAh/g with excellent rate kinetics and reversibility. For these polyanionic compounds, the strong inductive effect can increase the energy of the transition-metal redox couple and enhance the operating potential vis-a-vis sodium oxide cathodes.

The Hon’ble Vice President of India, Shri M. Venkaiah Naidu awarded the Gandhian Young Technological Innovation (GYTI) Award to Ritambhara Gond, Krishnakanth Sada and Anshuman Chaupatnaik, Indian Institute of Science, Bangalore at the GYTI 2019 Awards function held at Vigyan Bhawan, New Delhi on July 06, 2019.

Bhu-goal : Predicting Moods of India

Students of Chitkara University, Punjab, Kartik Vij, Rahul Kinra, Rouble Gupta and Debarshi Ghosh won the award for a Bhu-goal : Predicting Moods Of India. They carried their project work under the guidance of Dr. Nitin K. Saluja.

After working with the farmer community from the last few years, our team has seen farmers complaining God for the uncertainty of weather. When we suggest farmers to follow weather predictions available through applications, the exact words from them are “It doesn’t provide us with information about our village” means it is not precise for our village location. The uncertainty about information through weather satellite is quite high. It is difficult to afford such high technology satellites by developing country like India for the next few decades. Hence, the alternate sources should be used for precise information about the weather. The proposed product BhuGoal uses satellite TV signal distortion for precise prediction of rain at a defined location.

BhuGoal predicts the rain exactly 2 hours before it is expected with far more accuracy than the billion-dollar satellite. Satellite TV signals use Ku (nearby 10 GHz) band to communicate the channels. While it is established scientifically that the rain impact TV signals as the cloud formation happens before the rain. While the signal distortion is a function of weather condition, the distortion behaviour depends on the channel we are watching. Hence, a network of BhuGoal node will be established with the help of SRISTI to create multispectral and multiple location data. Hence, the nodes installed in different positions provide additional spatial information regarding the current position of clouds and hence it improves the prediction further.

The Hon’ble Vice President of India, Shri M. Venkaiah Naidu awarded the Gandhian Young Technological Innovation (GYTI) Award to Kartik Vij, Rahul Kinra, Rouble Gupta and Debarshi Ghosh, Chitkara University, Punjab at the GYTI 2019 Awards function held at Vigyan Bhawan, New Delhi on July 06, 2019.

Smart Signalling And Interlocking System

Students of M.Kumarasamy College of Engineering, Tamil Nadu, S. Karthikeyan, S. Umasankar and Karthikeyan S. won the award for a Smart Signalling And Interlocking System. They carried their project work under the guidance of Dr C. Ramesh.

During the foggy condition, the Loco Pilot driver is unable to see the signals, so an innovative approach was done to make a Smart System which uses a Low Power High Range Radio signals to transmit the signal between Station Master, MACL Signal and Loco pilot cabin. This system uses a special data packets for effective communication between the devices. These Data packets carry the information like Train Parameters, Loco pilot Parameters(VCD) etc. The vigilance control system helps in identifying the alertness of loco pilot. The Smart signalling uses the current technology of railways like axle counter and MACL signals for effective usage of Data Produced by them. This results in real-time monitoring of various parameters of rolling stock and MACL signals. The use of axle counters in railyard management software which uses data from various occupancy to switch and prevent the traffic routes. This system does not need Internet connectivity for transmission of data from train to station master cabin. Display panels are provided at both places of station master room and Loco cabin. This shows the real-time details of various parameters. Some of the components used in our system are relays, radio transceiver system. The main aim of our project is to increase the operation of railways in various climatic conditions. The team has designed a system on the objective of “One solution to solve various problems”. As a result of it the smart system also helps in solving the various problems like Unmanned Level Crossing and Manned Level Crossing, Alertness of the Loco Pilot while driving, Real-Time Monitoring of various parameters in operation of a train.

The Hon’ble Vice President of India, Shri M. Venkaiah Naidu awarded the Gandhian Young Technological Innovation (GYTI) Award to S. Karthikeyan, S. Umasankar and Karthikeyan S., M.Kumarasamy College of Engineering, Tamil Nadu, at the GYTI 2019 Awards function held at Vigyan Bhawan, New Delhi on July 06, 2019.

Fibonacci Series based Rectangular Microstrip Patch Antenna

Students of National Institute of Technology, Goa(NIT), Deven G. Patanvariya and Kalyan Sundar Kola won the award for a Fibonacci Series based Rectangular Microstrip Patch Antenna. They carried their project work under the guidance of Dr Anirban Chatterjee.

The project presents a new fractal microstrip antenna, which is derived from the Fibonacci series and Koch snowflake first iteration. The proposed structure has four-fold centrosymmetric about the origin. The symmetry is obtained by implementing a Fibonacci square box followed by etching of Koch snowflake (first iteration) in all the four quadrants of the structure. The overall dimension of the proposed fractal geometry is interrelated with the area of the smallest square box (C1 ) inside the geometry. Therefore, the resonating frequency of a microstrip antenna, based on the proposed design, can be determined by choosing the length of the smallest square box (in mm) inside the fractal geometry.

Moreover, the proposed geometry provides a balance between the etched and un-etched portion in the radiating surface of the patch and thereby capable of providing satisfactory gain as compared to the most commonly available fractal microstrip patch antennas. The proposed fractal can also be an excellent choice to design antennas for Bluetooth, WiMAX, ISM, C, X, Ku, K -band applications, since it can provide very good gain and bandwidth while operating in the corresponding frequencies. The fabricated prototype can directly be used for DSRC application since it satisfies the gain and bandwidth requirement. Moreover, the design of the proposed antenna using three different substrate material of Roger 5880, Neltec (NX9320) and FR-4, satisfy the gain and bandwidth requirements for the DSRC band.

The Hon’ble Vice President of India, Shri M. Venkaiah Naidu awarded the Gandhian Young Technological Innovation (GYTI) Award to Deven G. Patanvariya and Kalyan Sundar Kola, National Institute of Technology, Goa(NIT) at the GYTI 2019 Awards function held at Vigyan Bhawan, New Delhi on July 06, 2019.