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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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MnCO3 Cuboids from Spent LIBs: A New Age Displacement Anode to Build High-Performance Li-Ion Capacitors
Subramanian Natarajan1, Manohar Akshay1, Vanchiappan Aravindan1
1Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati, Andhra Pradesh, 517507, India.
Small (Weinheim an Der Bergstrasse, Germany)
|January 24, 2023
Summary
Recycled manganese carbonate anodes from spent lithium-ion batteries significantly boost lithium-ion capacitor performance. This innovation offers high energy and power density with exceptional long-term stability for advanced energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Hybrid charge storage systems like lithium-ion capacitors (LICs) offer advantages over batteries and supercapacitors.
- Sluggish lithium-ion diffusion in battery anodes limits the performance of high-performance LICs.
- Recycling spent battery materials presents a sustainable approach to developing advanced energy storage components.
Purpose of the Study:
- To develop a novel conversion/displacement type anode material from recycled lithium-ion battery cathodes for LIC applications.
- To investigate the electrochemical performance and stability of a lithium-ion capacitor utilizing the recycled anode.
- To assess the energy density and durability of the fabricated LIC under various operating conditions.
Main Methods:
- Regeneration of MnCO3 cuboids from spent LiMn2O4 cathodes via organic acid lixiviation.
- Hydrothermal treatment to enhance the reversibility and electrochemical properties of the MnCO3 anode.
- Assembly of a lithium-ion capacitor using pre-lithiated MnCO3 (Mn0 + Li2CO3) as the anode and commercial activated carbon (AC) as the cathode.
Main Results:
- The regenerated MnCO3 anode exhibited excellent reversibility of 535 mAh g-1 after 50 cycles with >99% Coulombic efficiency.
- The assembled AC/Mn0 + Li2CO3-based LIC achieved a maximum energy density of 169.4 Wh kg-1 at 25°C with ultra-long durability of 15,000 cycles.
- The LIC maintained significant energy densities (53.8 Wh kg-1 at -5°C, 119.5 Wh kg-1 at 50°C) and demonstrated >91% capacity retention after 1000 cycles across all tested temperatures.
Conclusions:
- Recycled MnCO3 from spent Li-ion battery cathodes is a viable and high-performance anode material for lithium-ion capacitors.
- The developed hybrid energy storage system demonstrates superior energy density, power density, and remarkable long-term cycling stability.
- This approach offers a sustainable pathway for waste valorization and the advancement of next-generation energy storage technologies.
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