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Congratulations to our team, their work entitled "Designing Electrolytes for Enhancing Stability and Performance of Lithium-Ion Capacitors at Large-scale Cylindrical Cells" has been accepted by the Journal of Power Sources (Tier 1, Impact factor = 8.1, Cite Score = 16.4).
A Lithium-ion capacitor (Li-ion capacitor or LIC) is a type of hybrid energy storage device that combines the characteristics of lithium-ion batteries and supercapacitors. It offers a balance between the high energy density of batteries and the high power density of capacitors.
Key Features of Li-ion Capacitors:
1. Hybrid Design: Li-ion capacitors use a combination of a lithium-ion battery anode (typically made from materials like graphite, and LTO) and a capacitor-positive electrode (often made from activated carbon). This design allows them to store energy through both electrostatic and electrochemical mechanisms.
2. High Energy Density: Li-ion capacitors have higher energy density than traditional supercapacitors, which can store more energy per unit of weight or volume. However, they typically have lower energy density than lithium-ion batteries.
3. High Power Density: Li-ion capacitors can deliver higher power outputs than lithium-ion batteries due to the capacitor component. This makes them suitable for applications requiring rapid charge and discharge cycles.
4. Long Cycle Life: Li-ion capacitors can endure more charge and discharge cycles than conventional lithium-ion batteries, which makes them suitable for applications where long-term durability is important.
5. Fast Charging: Thanks to their high-power density, Li-ion capacitors can charge much faster than traditional batteries, which is beneficial in applications where quick energy replenishment is needed.
Applications of Li-ion Capacitors:
• Energy Harvesting: They are used in systems that harvest energy from the environment, such as solar or wind power systems, where rapid charge and discharge are needed.
• Backup Power: Li-ion capacitors serve as backup power sources in electronics, providing a quick power supply during short outages.
• Automotive Industry: They are used in electric vehicles and hybrid electric vehicles to assist with braking energy recovery and quick acceleration.
• Portable Electronics: Li-ion capacitors can be found in devices that require both energy storage and rapid energy release, such as power tools and portable lighting.
Overall, Li-ion capacitors are a promising technology that bridges the gap between high-energy storage and high-power delivery, making them useful in a wide range of advanced applications.