Title: Designing FerroelectricNanocomposites/Nano heterojunctions for Clean Energy Harvesting
With the ever-increasing demand for energy and also due to an increase in environmental pollution, there has been a lot of interest to develop novel materials for clean energy generation. Harvesting vibration energy through piezo/tribogenerator [1-4], and hydrogen generation through photoelectrochemical water splitting are among the promising environmentally friendly approach to providing solutions to the present problem. We have designed several ferroelectric nanocomposite/nanostructures and explored its potential application for efficient piezo/tribo generators and as photoanodes for PEC water splitting.
Triboelectric effect based nanogenerator have the edge over other mechanical energy harvesters because of its robustness, cost-effectiveness and higher energy. In the solid-solid interface based tribo-nanogenerator both the material used for contact are solid [1,2] whereas in the solid-liquid interface based tribo-nanogenerator liquid (water drop)comes in contact with a solid material [3]. The performance of these tribo-nanogenerator depends upon the amount of induced charges during the contact and the retentively of these charges which can be captured for generating electricity. In the Photoelectrochemical water splitting device use of ferroelectric nanocomposite/heterostructures enabled to tune of the band edge position and thus results in much-improved efficiency [5].
The present talk will review the progress made so far in our group at IIT Delhi in the above-mentioned area [2-6] and will also present the main challenges.
Reference:
[1] H. H. Singh and N. Khare, Nano Energy,52, 216-222 (2018)
[2] H. H. Singh and N. Khare, Energy, 178,765-771 (2019)
[3] H. H. Singh and N. Khare, AdvancedMaterials Interfaces, 8, 2170068 (2021)
[4] A. Mondal, M. Faraz, N. Khare, AppliedPhysics Letters, 121, 103901 (2022)
[5] D. Kumar, S. Sharma, N. Khare, RenewableEnergy, 163, 1569-1579 (2021)
[6] AK Gautam, HH Singh, N Khare, Nano Energy 107,108125 (2023)
Host: Steve Anlage