Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Temperature Tolerant and Highly Cyclable all-oxynitride-based Solid State Asymmetric Supercapacitors
Categories for this Invention
Categories: Energy, Energy Storage & Renewable Energy | Electronics & Circuits
Industry: Electronics Industry
Applications: Portable Electronics, Wearable Technology, Automotive Sector, Renewable Energy Systems, Industrial Automation
Market: The global Supercapacitors market size was valued at US$ 5.54 B in 2022 and is expected to reach US$ 24.03 B growing at 23.3% CAGR from 2023 to 2029.
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Problem Statement
- Traditional supercapacitors uses carbon-based materials with limitations in specific capacitance, while those based on metal oxides or conducting polymers offer high capacitance but lack cyclic stability.
- Challenges to maintain performance across a wide temperature range is faced by it.
- Though we have addressed asymmetric supercapacitors, there is a gap in disclosing a super-capacitor with both electrodes as oxynitride electrodes and specifically emphasizing high-temperature tolerance.
- Temperature-tolerant supercapacitors with extended cycle life are lacking in market.
- Hence, there is a need to develop a highly cyclable and temperature-tolerant all-oxynitride-based solid-state asymmetric supercapacitors, for filling the technical gap in the current market space.
Technology
The invention presents an a highly cyclable & temperature-tolerant all-oxynitride-based solid-state asymmetric supercapacitor with electrodes made of cerium oxynitride and chromium oxynitride.
The invention introduces a novel method for preparing oxynitride nanoparticles, involving the use of urea in a solution of cerium or chromium salt in ethanol. The resulting nanoparticles are used as electrode materials.
Key Features / Value Proposition
User perspective:
- Devices equipped with it ensure longer lifespan and consistent performance.
- Enables rapid charging & higher energy density, providing quick and lasting device usage.
Technology Perspective:
- Cyclic stability greater than 20% capacitance degradation after >105 cycles.
- Rate capability of 72.92% capacitance retention at 100 mV s-1.
- Temperature-based stability (–30 to 70 oC).
Industrial perspective:
- Offers an advanced energy storage solution, fostering innovation in energy systems.
- Lowers maintenance costs & ensures reliable operations across various conditions.
- Offers superior energy storage capabilities.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Tiju Thomas
Department of Metallurgical & Materials Engineering
Intellectual Property
IITM IDF No: 2263
IP No: 461057 (Granted)
Technology Readiness Level
TRL– 4
Experimentally validated in lab.