Overview
Electrically rechargeable Zinc-air batteries exhibit high specific energy and interesting from an economical and ecological point of view. One of the challenges with Zn-Air batteries is to make them rechargeable in aqueous based system. Scientists at CFCT are addressing this issue and have initiated a program to develop rechargeable Zn-air battery and eventually other metal - air batteries. In the first instance, we have developed and demonstrated rechargeable 12 V Zn-Air battery using air breathing electrodes and ionic liquid electrolyte. The cyclic stability studies were also reported. Presently CFCT has initiated work on development of aqueous electrolyte based rechargeable Zinc-air secondary battery and carried out preliminary studies. The electrode area of the cell has been scaled up from 5 sq.cm to 30 sq.cm and results shows improved cycle life and capacity of the cell and it has provided the scope for further improvement, which is in progress.
Key Features
- High Energy Density
- Materials are low cost, non-toxic and environmentally friendly.
- Easy fuel storage
- Non-flammable and non-explosive nature
Potential Applications
- Smart and green grid storage
- Automobile (Electric Vehicle)
- Portable
Status
- Performance and stability are validated at single cell level
- Scale-up and prototype module fabrication underway
Intellectual Property Development Index (IPDI)
Level
1
2
3
4
5
6
7
8
9
10
Description
Basic concepts and understanding of underlying scientific principles
Shortlisting possible applications
Research to prove technical feasibility for targeted application
Coupon level testing in simulated conditions
Check repeatability/consistency
Prototype testing in real-life conditions
Check repeatability/consistency
Reassessing feasibility (IP, competition technology, commercial)
Initiate technology transfer
Support in stabilizing production
Status
| Level | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Description | Basic concepts and understanding of underlying scientific principles | Shortlisting possible applications | Research to prove technical feasibility for targeted application | Coupon level testing in simulated conditions | Check repeatability/consistency | Prototype testing in real-life conditions | Check repeatability/consistency | Reassessing feasibility (IP, competition technology, commercial) | Initiate technology transfer | Support in stabilizing production |
| Status |
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- Karajagi, I., Ramya, K., Ghosh, P. C., Sarkar, A., Rajalakshmi, N., (2020) Nickel Integrated Carbon Electrodes for Improved Stability, Journal of Electrochemical Society 2020 167 130510.
- Karajagi, I., Ramya, K., Ghosh, P. C., Sarkar, A., Rajalakshmi, N., (2020) Co-doped carbon materials synthesized with polymeric precursors as bifunctional electrocatalysts, RSC Adv 2020,10, 35966-35978.
- Karajagi, I., Ramya, K., Ghosh, P. C., Sarkar, A., Rajalakshmi, N., (2019) . Ion Immobilized Bifunctional Electrocatalyst for Oxygen Reduction and Evolution Reaction, ACS Appl. Energy Mater. 2019, 2, 11, 7811-7822.
- Karajagi, I., Ramya, K., Ghosh, P. C., Sarkar, A., Rajalakshmi, N., (2019) Engineering of O2 Electrodes by Surface Modification for Corrosion Resistance in Zinc-Air Batteries, Springer Proceedings in Energy pp 717-723,Springer.com/gp/book/9789811559549.
- N.Sasikala, K.Ramya, K.S.Dhathathreyan, Bifunctional electrocatalyst for oxygen/air electrode Energy Conversion and Management. 77, 2014, 545-549.