Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
New Methodology to Enhance the Cycle Life of Secondary Batteries
Categories for this Invention
Energy, Energy Storage & Renewable Energy
Industry:Â Energy Storage Technology
Applications: Lithium-ion batteries, Sodium-ion batteries, Secondary battery systems, Electric Vehicle, Renewable Energy Storage, Battery Management Improvement, Power Backup
Market: The global Secondary Battery market is valued at $94 M in 2022, expected to reach $216 M growing at 11% CAGR from 2023-30.
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Problem Statement
- Li-ion or Na-ion batteries suffer from capacity fading due to residual Li or Na atoms or sulfur dissolution in Li-S batteries, impacting their longevity and performance.
- Establishing the optimal voltage range for charging and discharging is critical to mitigate capacity fading and prevent cell degradation.
- Existing methods only offers approximate voltage windows & lack precision needed for effective battery management & prolong battery lifespan.
- Some prior arts address fast charge-discharge rates, low capacity fading, and integrating techniques like the electrochemical impedance spectroscopy (EIS) with cyclic voltammograms (CV) for studying capacity fade mechanisms.
- However, the challenge persists in achieving a delicate balance between maximizing capacity extraction and minimizing capacity fading & cell degradation. Hence, the instant invention discloses a New Method to Enhance the Cycle Life of Secondary Batteries.
Technology
The present technology discloses a method for enhancing secondary batteries life cycle by determining an optimal charging and discharging voltage range with slight charge transfer resistance by analysis of electrochemical impedance spectra.
Key Features / Value Proposition
User perspective:
- Prolongs battery life and improves performance by identifying best charging & discharging voltage range, minimizing capacity fading.
- Reduces risk of capacity degradation, ensuring more reliable battery operation over time.
- Offers a straightforward approach for determining optimal voltage range, simplifying battery usage management.
Industrial perspective:
- Decreases costs related to battery replacement and maintenance, reducing downtime and increasing operational efficiency.
- Provides a competitive edge by offering batteries with extended lifespan, attracting more customers and driving sales.
- Aligns with sustainability goals and regulations, contributing to a greener environment.
Technology perspective:
- Integrates cutting-edge technology for optimizing battery performance.
- Enables informed decision-making regarding battery charging and discharging.
- Can be adapted for various battery chemistries & applications, offering versatility & scalability.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Ramaprabhu SÂ
Department of Physics
Intellectual Property
IITM IDF No: 1430Â
IP No: 494415 (Granted)
Technology Readiness Level
TRL-4
Validated in Laboratory